Module 03 Part 3

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06. DC

06. DC Circuits.Circuits.

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Quesestition on NuNummbberer.. 1..1 A A ppototenentitial al ddififffererenence ce of of 550 v0 vololts ts pprorodducuces es a a cucurrrrenent ot of 1f 100 milliamperes through a resistance of.

milliamperes through a resistance of. O Oppttiioon n AA.. 55000 0 oohhmmss.. O Oppttiioon n BB.. 5 5 oohhmmss.. O Oppttiioon n CC.. 55,,00000 0 oohhmmss.. Co

Corrrrecect t AAnsnseer r isis.. 55,0,000 00 ohohmms.s. !"p

!"planalanatiotion.n. #$ % 5#$ % 50&0&, ' % , ' % 0.00.01A, ( 1A, ( % ), (%% ), (%#$*#$*'.'.

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Quesestition on NuNummbberer.. ++.. A A coconnduductctoor r itith h a pa poosisititivve Q e Q cchaharrgge- e- oof f C C hahas 1s 1++.5.5/ " / " 110101 electrons added to it. 't ill have a Q %.

electrons added to it. 't ill have a Q %. O

Oppttiioon n AA.. //.. O

Oppttiioon n BB.. ++.. O

Oppttiioon n CC.. eerroo.. C

Coorrrreecct t AAnnsseer r iiss.. //.. !"pla

!"planationnation.. A A chargcharge of 1 e of 1 CoulCoulomb omb C- is C- is /.+ /.+ 2 102 101. 1. 3ence 3ence  4 +  4 + % / % / C.C.

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Quesestition on NuNummbberer.. .. 66hhe pe pooeer dr disissisippatated ed b7 b7 a la looad ad oof 8f 8nnoon rn resesisistatannce ce coconnnnecectetedd across a 8non potential difference can be calculated b7.

across a 8non potential difference can be calculated b7. Op

Optition on AA.. didivivididing tng the she s9u9uare oare of thf the poe potetentntial ial didiffffereerencnce b7 te b7 the vhe valalue oue of thf the loe loadad resistance.

resistance. Op

Optition Bon B.. mumultltipipl7l7ining thg the s9ue s9uare oare of thf the poe potetentntial dial dififfeferenrence b7 ce b7 ththe vae valulue of te of the lhe loaoadd resistance.

resistance. Op

Optition Con C.. oor8r8ining oug out tht the cue currerrent fnt floloiing ing in thn the cie circurcuit bit b7 u7 usinsing ohg ohms lms la aa andnd multipl7ing the result b7 the resistance.

multipl7ing the result b7 the resistance. Cor

Correct rect AnAnseser is.r is. oror8in8ing oug out the ct the currurrent flent floioing in tng in the cihe circuircuit b7 ut b7 usinsing ohmg ohms la ans la andd multipl7ing the result b7 the resistance. O( dividing the s9uare of the potential difference b7 multipl7ing the result b7 the resistance. O( dividing the s9uare of the potential difference b7 the value of the load resistance.

the value of the load resistance. !

!"p"plalananatitionon.. N'N'::..

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Quuesesttiioon Nn Nuummbberer.. .. A A ccuurrrreennt ot of 5f 5A A fflloos fs foor + mr + mininuutetess. 3. 3oo m maan7 n7 ccoouullomombbss passed a point in the circuit).

passed a point in the circuit). O Oppttiioon n AA.. ++..55.. O Oppttiioon n BB.. //0000.. O Oppttiioon n CC.. 110000.. C

Coorrrreecct t AAnnsseer r iiss.. //0000.. !"p

!"planalanatiotion.n. Q % Q % '6'6, , Q % Q % 5 2 5 2 1+0 1+0 % /% /00C00C..

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Quesestition on NuNummbberer.. 5..5 A A cicircrcuiuit ht has as a ca cururrerennt ft flolo o of /f /A. A. 'f 'f ththe ve vololtatage ge is is trtrebebleled, d, ththee ne current ill be.

ne current ill be. O

Oppttiioon n AA.. //AA.. O

Oppttiioon n BB.. 11AA.. O

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C

Coorrrreecct t AAnnsseer r iiss.. 11AA.. !

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Quuesesttiioon Nn Nuummbberer.. //.. A A 1100& b& baatttteer7 r7 susupppplliiees a rs a reesisisstitivve le looaad od of 1f 10 o0 ohhmms fs foor 1r 1 minute. ;hat is the or8 done).

minute. ;hat is the or8 done). O Oppttiioon n AA.. //00<<.. O Oppttiioon n BB.. //0000<<.. O Oppttiioon n CC.. 1100<<.. C

Coorrrreecct t AAnnsseer ir iss.. //0000<<.. !"pla

!"planationnation.. ;o;or8 out por8 out poer. er. 6hen !6hen !nerg7 % #nerg7 % #oer 2 6oer 2 6ime timime time must be in secoe must be in seconds-.nds-.

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Quueessttiioon n NNuummbbeerr.. ==.. A A ggaallvvaannoommeetteer r mmeeaassuurreess.. O

Oppttiioon n AA.. mmiilllliivvoollttss.. O

Oppttiioon n BB.. mmeeggoohhmmss.. O

Oppttiioon n CC.. mmiilllliiaammppss.. C

Coorrrerect ct AAnnsseer isr is.. mmiilllliiamamppss.. !"p

!"planalanatiotion.n. A gA galvalvanoanometmeter meaer measuresures mills milliamiamps.ps.

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Quueessttiioon n NNuummbbeerr.. .. 66hhe e vvoollttaagge e aat t ppooiinnt t A A iiss.. O

Oppttiioon n AA.. ++  &&.. O

Oppttiioon n BB.. ++1 1 &&.. O

Oppttiioon n CC.. = = &&.. C

Coorrrreecct t AAnnsseer r iiss.. = = &&.. !

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Quueessttiioon Nn Nuummbbeerr.. >>.. A A lloosss os of ef elleeccttrriiccaal il innssuullaattiioon rn reessuulltts is inn.. Op

Optition on AA.. an an opopen en cicircrcuiuit bt beteteeen en ththe se supupplpl7 a7 and nd eaeartrth.h. Op

Optition on B.B. a sa shohort rt cicircrcuiuit bt beteteeen en ththe se supupplpl7 7 anand ed eararthth.. O

Oppttiioon Cn C.. aan on oppeen cn ciircrcuuit it iin tn thhe se suuppppl7l7.. Co

Correrrect Act Ansnseer is.r is. a sha shorort cirt circucuit bit beteteeen ten the she supuppl7 pl7 anand eard earthth.. !

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Quesestition on NuNumbmberer.. 1010.. A A , , 5 5 anand + d + ohohms ms reresisiststanance ce is is coconnnnececteted id in n seseriries es iith th a a 10 10 && batter7.

batter7. 6he voltage across the + ohms resistor is.6he voltage across the + ohms resistor is. O

Oppttiioon n AA.. + + &&.. O

Oppttiioon n BB.. 1100&&.. O

Oppttiioon n CC..   &&.. C

Coorrrreecct t AAnnsseer r iiss.. + + &&.. !"pla

!"planationnation.. !ach res!ach resistor ta8istor ta8es its relates its relative share oive share of the volf the voltage drotage drop. 6p. 6otaotal resistanl resistance is 10ce is 10 ohms, so the + ohm resistor ta8es +*10ths of the voltage.

ohms, so the + ohm resistor ta8es +*10ths of the voltage.

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Quesestition on NuNummbberer.. 1111.. ;;hahat it is ts thhe #e #$ o$ of a f a cicircrcuiuit t hihich ch hhas as a a 0 m0 mA A cucurrrrenent at annd a d a 11 8ilohm resistance).

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O

Oppttiioon n AA.. 0 0 &&.. O

Oppttiioon n BB.. 000 0 &&.. O

Oppttiioon n CC..   &&.. C

Coorrrreecct t AAnnsseer ir iss.. 0 &0 &.. !"p

!"planalanatiotion.n. & % ' " (. mA & % ' " (. mA 2 8oh2 8ohms canms cancel eacel each othch others? pers? prefirefi".".

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Quesestition on NuNumbmberer.. 1+1+.. 6h6hreree e brbrananchches es in in a a cicircrcuiuit t hahave ve cucurrrrenents ts enenteteriring ng of of AA, , AA and 5A. A forth branch has 10 A leaving. A

and 5A. A forth branch has 10 A leaving. A fifth branch fifth branch must have.must have. O

Oppttiioon n AA.. ++++A A lleeaavviinngg.. O

Oppttiioon n BB.. ++A A lleeaavviinngg.. O

Oppttiioon n CC.. ++A A eenntteerriinngg.. Co

Corrrrecect t AAnsnseer ir is.s. ++A A leleavaviningg.. !"pla

!"planationnation.. Basic @irBasic @ir8cho8choff?s curff?s current larent la. um . um of curreof currents entnts entering % suering % sum of currm of currentsents leaving.

leaving.

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Quesestition on NuNumbmberer.. 11.. 'n 'n a ca cirircucuit it cocontntaiainining ng ththreree re resesisistotors rs of of e9e9uaual vl valalue ue coconnnnecectetedd in parallel, one resistor goes open circuit. 6he current in the other to resistors ill.

in parallel, one resistor goes open circuit. 6he current in the other to resistors ill. O

Oppttiioon An A.. ddeeccrreeaassee.. O

Oppttiioon n BB.. iinnccrreeaassee.. O

Oppttiioon n CC.. rreemmaaiin n tthhe e ssaammee.. Co

Corrrrecect At Ansnseer ir is.s. reremmaiain tn the he sasameme.. !

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Quesestition on NuNummbberer.. 1.1. ++0 a0 ammpepereres fs flolo f foor +r +0 s0 sececoondnds. s. 3o3o m manan7 c7 cooululomombbs hs havavee floed). floed). O Oppttiioon n AA.. 11.. O Oppttiioon n BB.. ++00.. O Oppttiioon n CC.. 0000.. C

Coorrrreecct t AAnnsseer r iiss.. 0000.. !

!"p"plalananatitionon.. Q Q % '% 't.t.

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Quesestition on NuNummbberer.. 15.15. 'f 'f ththe re resesisistatannce ce oof af an en elelectctriricacal cl cirircucuit it is is inincrcreaeasesedd.. O

Oppttiioon n AA.. tthhe ce cuurrrreennt t iilll l iinnccrereaasse.e. O

Oppttiioon n BB.. tthhe e vvoollttaagge e iilll l iinnccrreaeasse.e. O

Oppttiioon n CC.. tthhe e ccuurrrreennt t iilll l ddeecrcreeaasese.. Co

Corrrrecect At Ansnseer isr is.. ththe cue currrrenent it ill dll dececrereasase.e. !

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Quesestition on NuNumbmberer.. 1/1/.. 'f 'f + + cocoululomombs bs flflooed ed ththrorougugh h a ca cirircucuit it in in + + sesecocondnds, s, ththe ce cirircucuitit ould have.

ould have. O

Oppttiioon n AA.. 1 1 aammpp.. O

Oppttiioon n BB.. + + vvoolltts s ##$$.. O

Oppttiioon n CC..   aammppss.. C

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!"

!"plplananatatioion.n. Q % 'Q % 't st so ' % o ' % Q*Q*t.t.

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Quuesesttiioon Nn Nuummbberer.. 11==.. ''f tf thhe ve voollttaagge ae acrcrooss ss a ra resesiiststoor ir is ds doouubblleedd.. O

Oppttiioon n AA.. tthhe ce cuurrrreennt it is ds doouubblleedd.. O

Oppttiioon n BB.. tthhe e ccuurrrreennt t iis s hhaallvveedd.. O

Oppttiioon n CC.. tthhe e rreesisissttanancce e iis s hhaallvveded.. Co

Corrrrecect At Ansnseer isr is.. the cuthe currrrenent it is ds dououblbleded.. !

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Quesestition on NuNumbmberer.. 11.. 6h6he te tototal al cucurrrrenent ft floloiing ng in in a a cicircrcuiuit ot of +f +00 00 lalampmps is in n papararallllelel,, each of a resistance of 00 ohm and connected across an input of 100 volts is.

each of a resistance of 00 ohm and connected across an input of 100 volts is. O

Oppttiioon n AA.. ++5 5 aammppss.. O

Oppttiioon n BB.. 550 0 aammppss.. O

Oppttiioon n CC.. 0 0 aammppss.. C

Coorrrerect ct AAnnsseer ir is.s. 550 0 amampps.s. !"pla

!"planationnation.. 6o6otal resisttal resistance is 0ance is 00 * +00 % + 0 * +00 % + ohmsohms. Ohms la . Ohms la for currefor current ' % &*( nt ' % &*( % 100*+% 100*+ % 50 amps.

% 50 amps.

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Quesestition on NuNummbberer.. 1>.1>. 'n 'n ththe ce cirircucuit it shshoon n ththe +e + v voolt lt bbatatteter7 r7 hhas as an an ininteternrnalal

resistance of 1 ohm and the ammeter indicates a current of 1+ amperes. 6he value of the load resistance of 1 ohm and the ammeter indicates a current of 1+ amperes. 6he value of the load resistance is. resistance is. O Oppttiioon n AA.. + + oohhmmss.. O Oppttiioon n BB.. 1 1 oohhmm.. O Oppttiioon n CC.. / / oohhmmss.. C

Coorrrreecct t AAnnsseer ir iss.. 1 o1 ohhmm.. !"pla

!"planationnation.. ind ind the totthe total resistal resistance ( % ance ( % &*' % +&*' % +*1+ % *1+ % + ohm+ ohms. ubs. ubtractintracting integ internalrnal resistance leaves 1 ohm.

resistance leaves 1 ohm.

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Quesestition on NuNumbmberer.. +0+0.. 'f 'f seservrvicice Ne No. o. 1 1 is is isisololatated ed frfrom om ththe se supupplpl7 7 bubusbsbar ar shshoon tn theherere ill be.

ill be. O

Oppttiioon An A.. aan in inncrcreeaase se iin sn suuppppll7 v7 voollttaaggee.. Op

Optition on B.B. a a dedecrcreaease se in in tototatal l cucurrrrenent ct cononsusumpmptitionon.. O

Oppttiioon Cn C.. a da deeccrereaasse ie in sn suuppppl7 l7 vvoolltataggee.. Co

Correrrect Act Ansnseer is.r is. a dea decrcreasease in te in tototal cal cururrenrent cot consnsumumptptioion.n. !"pla

!"planationnation.. huthutting dting don a son a service oervice on an an an aircraft ircraft b7 pub7 pulling lling the circthe circuit breuit brea8er foa8er forr e"ample-, increases the total resistance and reduces the current consumption.

e"ample-, increases the total resistance and reduces the current consumption.

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Quesestition on NuNumbmberer.. +1+1.. 'f 'f ththe ce crorossssssecectitiononal al ararea ea of of a a cocondnducuctotor ir is s dodoububleled, d, iithth voltage constant, the current ill.

voltage constant, the current ill. O

Oppttiioon n AA.. rreemmaaiin n ccoonnssttaanntt.. O

Oppttiioon n BB.. ddoouubbllee.. O

Oppttiioon n CC.. hhaallvvee.. C

Coorrrerect ct AAnnsseer ir is.s. ddoouubbllee.. !"pla

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Quesestition on NuNumbmberer.. ++++.. 'f 'f tto o reresisiststorors os of f 5 5 anand d 10 10 ohohm m rerespspecectitivevel7 l7 arare e coconnnnececteted d inin series and the current in the 5 ohm resistor is 1A. hat is the current in the 10 ohm resistor). series and the current in the 5 ohm resistor is 1A. hat is the current in the 10 ohm resistor). O

Oppttiioon n AA.. 1 1 aammpp.. Op

Optition on B.B. 't 't cancannonot bt be fe fouound nd iiththouout 8t 8nonoiing ng ththe ae apppplielied vd vololtagtage.e. O

Oppttiioon n CC.. 11**  aammpp.. C

Coorrrreecct t AAnnsseer ir iss.. 1 a1 ammpp.. !"p

!"planalanatiotion.n. (es(esistoistors in serrs in series  curies  currenrent is the samt is the same in each oe in each one.ne.

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Quueessttiioon n NNuummbbeerr.. ++.. 66hhe ve voollttaagge e iin n a sa seerriiees s cciirrccuuiitt.. Op

Optition on AA.. is is didifffefererent nt in in eaeach ch cocommpoponenentnt.. O

Oppttiioon Bn B.. iis ts thhe se saamme ie in en eacach ch coommppoonneenntt.. Op

Optition on C.C. is is leless ss ththan an it it ooululd bd be ie in a n a papararallllel el cicircrcuiuit.t. Co

Correrrect ct AAnsnseer ir is.s. is is didiffffererenent it in en each ach cocompmpononenent.t. !

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Quesestition on NuNumbmberer.. ++.. 'f 'f vovoltltagage ie is 1s 10000&&, , reresisiststanance ce is is +5 +5 ohohmsms, , hahat it is ts the he cucurrrrenent)t).. O

Oppttiioon n AA..   aammppeerreess.. O

Oppttiioon n BB.. 00..  aammppeerreess.. O

Oppttiioon n CC.. ++55000 0 aammppeerreess.. C

Coorrrerect ct AAnnsseer ir is.s.  a ammpeperrees.s. !"

!"plplananatatioion.n. OhOhms ms :a:a '  ' % &% &*(*(..

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Quesestition on NuNummbberer.. ++5.5. A A shshoort rt cicircrcuuit it bbeteteeen en ththe e susuppppl7 l7 anand d eaeartrthh.. Op

Optition on AA.. is is nonot dt danangegerorous us as as ththe ce cururrerent nt drdraan n ilill bl be le loo.. Op

Optition on B.B. dodoes es nonot mt mattatter er if if ththe ce circircuiuit ut uses ses ththe aie aircrcrafraft et eararth th as as a rea retuturnrn.. Op

Optition on C.C. cocoululd bd be ve ver7 er7 dadangngererouous as s as ththe ce cururrenrent dt draran n iill ll be be vever7 r7 hihighgh.. Cor

Correct rect AnAnseser is.r is. coucould bld be ver7 e ver7 dandangergerous aous as the s the curcurrenrent drat dran n ill bill be vere ver7 hi7 high.gh. !"pla

!"planationnation.. 'n a shor'n a short circuitt circuit, the resis, the resistance is ertance is ero. B7 oo. B7 ohms lahms la, ' % &*, ' % &*(. 'f ( % 0, (. 'f ( % 0, ' %' % &*0 so hat is ' it is not eroEEE-.

&*0 so hat is ' it is not eroEEE-.

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Quesestition on NuNummbberer.. ++/./. A A cicircrcuiuit ct cononsisiststs os of  of  ohmhm, 5 o, 5 ohm hm anand 1d 1+ o+ ohhm rm resesisistotors rs inin series. 6he current floing in the 5 ohm resistor is 10 amps. ;hat is the applied voltage). series. 6he current floing in the 5 ohm resistor is 10 amps. ;hat is the applied voltage). O

Oppttiioon n AA.. 110 0 &&.. O

Oppttiioon n BB.. 11000 0 &&.. O

Oppttiioon n CC.. ++000 0 &&.. C

Coorrrerect ct AAnnsseer r iis.s. ++000 0 &&.. !

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Quesestition on NuNumbmberer.. +=+=.. 66o o reresisiststorors as are re coconnnnececteted d in in seseriries es anand hd havave ae an n e.e.m.m.f. f. of of && volts across them. 'f the voltages across the resistances are &1 and &+ then b7 @irchhoff?s volts across them. 'f the voltages across the resistances are &1 and &+ then b7 @irchhoff?s la.

la. O

Oppttiioon n AA.. &&+ + % % &&1 1 4 4 &&.. O

Oppttiioon n BB.. &&1 1 % % &&+ + 4 4 &&.. O

Oppttiioon n CC.. & & % % &&1 1 4 4 &&++.. C

Coorrrerect ct AAnnsseer ir is.s. & & % &% &1 4 1 4 &&++.. !

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Quueessttiioon Nn Nuummbbeerr.. ++.. A A vvoollttmmeetteer ir is cs coonnnneecctteedd.. O

Oppttiioon n AA.. iin n ppaarraalllleell.. O

Oppttiioon n BB.. iin n sseerriiees s oor r ppaarraalllleell.. O

Oppttiioon n CC.. iin n sseerriieess.. Co

Corrrrecect t AAnsnseer r isis.. in in papararallllelel.. !"pla

!"planationnation.. &&ooltmeterltmeters are conns are connected ?acrected ?across? the cooss? the componmponent i.eent i.e. in paral. in parallel ith ilel ith it.t. Ammeters are connected in series.

Ammeters are connected in series.

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Quesestition on NuNumbmberer.. +>+>.. iincnce ee elelectctriricacal sl supupplplieies ts ta8a8en en frfrom om a ba bususbbar ar arare ie in n papararallllelel,, isolating some of the services ould.

isolating some of the services ould. Op

Optition on AA.. rereduduce tce the che cururrerent cnt cononsusummptptioion frn from tom the bhe bususbbarar.. Op

Optition Bon B.. inincrcreaease tse the che cururrerent cnt cononsusumpmptition fon frorom thm the bue bussbabarr.. Op

Optition Con C.. nonot aft affefect tct the che cururrerent cnt cononsusumpmptitionon, it , it ooululd red reduduce tce the vhe vololtagtage.e. Cor

Correct rect AnAnseser is.r is. redreduce uce the the curcurrenrent cot consunsumptmption ion from from the the busbusbabar.r. !"pla

!"planationnation.. 'solati'solating somng some of the e of the servicservices increaes increases the rses the resistanesistance of thce of the total ce total circuitircuit similar to removing a resistor from a parallel circuit. o total current consumption reduces. similar to removing a resistor from a parallel circuit. o total current consumption reduces.

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Quesestition on NuNumbmberer.. 00.. 6h6he ce cururrerent nt flflooining tg thrhrouough gh a ca cirircucuit it cacan n be be inincrcreaeasesed td to o fofourur times its original value b7.

times its original value b7. Op

Optition on AA.. dodoububliling ng ththe ae apppplilied ed vovoltltagage ane and hd halalviving ng ththe re resiesistastancnce.e. Op

Optition on B.B. dodoububliling ng ththe re resesististanance ace and nd dodoububliling ng ththe ae apppplilied ed vovoltaltagege.. Op

Optition on C.C. hahalvilving ng ththe ae apppplilied ed vovoltltagage ae and nd hahalvilving ng ththe re resesististanancece.. Cor

Correct rect AnAnseser is.r is. doudoublibling tng the ahe applpplied ied volvoltagtage ane and had halvilving tng the rhe resisesistantance.ce. !

Qu

Quesestition on NuNumbmberer.. 11.. 'n 'n a ca cirircucuit it cocontntaiainining ng ththreree re resesisistotors rs of of e9e9uaual vl valalue ue coconnnnecectetedd in series and one of the resistors short circuits, the effect is for the current in the other to in series and one of the resistors short circuits, the effect is for the current in the other to resistors to.

resistors to. O

Oppttiioon An A.. ddeeccrreeaassee.. O

Oppttiioon n BB.. iinnccrreeaassee.. O

Oppttiioon n CC.. rreemmaaiin n tthhe e ssaammee.. C

Coorrrerect ct AAnnsseer ir is.s. iinnccrereaasse.e. !"pla

!"planationnation.. (edu(educing oncing one resistoe resistor to ero r to ero ohms ohms short short circuitcircuit- means t- means the souhe source emf irce emf iss no applied to the to remaining resistors, and causes a greater current flo through them. no applied to the to remaining resistors, and causes a greater current flo through them.

(7)

Q

Quueessttiioon n NNuummbbeerr.. ++.. ''n n a a sseerriiees s rreessiissttiivve e cciirrccuuiitt.. Op

Optition on AA.. ththe toe total tal vovoltaltage ge is eis e9u9ual tal to to the she sum um of of ththe ine indidivividudual val vololtagtages.es. Op

Optition on B.B. ththe te tototal al vovoltaltage ge is is ththe se samame ae as ts the he hihighghest est inindidivividudual.al. Op

Optition Con C.. ththe toe total vtal vololtagtage e9e e9uauals thls the die diffffereerencnce bee betteeeen thn the ine indidivividudual val vololtatageges.s. Cor

Correct rect AnAnseser is.r is. the tthe totaotal vol voltagltage is e9e is e9ual tual to tho the sum e sum of tof the inhe indivdividuidual voal voltagltages.es. !

Qu

Quesestition on NuNummbberer.. .. 66hhe re reaeaddining g on on ththe ae ammmmeteter er in in ththe ce cirircucuit it shshoon n isis.. O

Oppttiioon n AA.. AA.. O

Oppttiioon n BB.. 11++AA.. O

Oppttiioon n CC.. //AA.. C

Coorrrreecct t AAnnsseer ir iss.. //AA.. !"p

!"planalanatiotion.n. 66ototal resal resistaistance % + ohnce % + ohms. ' % &ms. ' % &*( % 1+**( % 1+*+ % / A+ % / A..

Q

Quuesesttiioon Nn Nuummbberer.. .. AAn an ammmmeteteer ir is cs coonnnnecectted ed iinntto a o a cciircrcuuiit it inn.. O

Oppttiioon n AA.. sseerriieess.. O

Oppttiioon n BB.. sshhuunntt.. O

Oppttiioon n CC.. ppaarraalllleell.. C

Coorrrerect ct AAnnsseer r iis.s. sseeririeess.. !"pla

!"planationnation.. ammeter ammeter is ala7is ala7s put ins put into a cirto a circuit in cuit in series iseries ith the th the compocomponent it nent it isis measuring the current through.

measuring the current through.

Q

Quueessttiioon n NNuummbbeerr.. 55.. ;;hhaat t iis ts thhe ve voollttaagge ae at t AA)).. O

Oppttiioon n AA.. ++//&&.. O

Oppttiioon n BB.. ++&&.. O

Oppttiioon n CC.. ++&&.. C

Coorrrreecct t AAnnsseer ir iss.. ++//&&.. !"pla

!"planationnation..  ohm re ohm resistor isistor ill drop ll drop */+th*/+ths of the +s of the +& sup& suppl7 i.pl7 i.e. 1.&e. 1.&-. o the-. o there ill bere ill be appro"imatel7 +/& left.

appro"imatel7 +/& left.

Q

Quuesesttiioon Nn Nuummbberer.. //.. 66hhe se soouurrcce ve voollttaagge ie in tn thhe ce ciircrcuuiit st shhoon in is.s. O

Oppttiioon n AA.. ++0000&&.. O

Oppttiioon n BB.. 5500&&.. O

Oppttiioon n CC.. 115500&&.. C

Coorrrreecct At Annsseer ir iss.. ++0000&&.. !"pla

!"planationnation.. 6his is a st6his is a standard andard potentpotentiometiometer. er. 't split't splits the vols the voltage b7 ttage b7 the same rathe same ratio as theio as the number of turns. o 50& is 00*1+00ths of the

number of turns. o 50& is 00*1+00ths of the source voltage 50 % source voltage 50 % *1+&-. 6ranspo*1+&-. 6ranspose for &.se for &.

Qu

Quesestition on NuNumbmberer.. ==.. (e(efeferrrrining g to to ththe e drdraaining, g, if if ththe e vovoltlts ds droropppped ed acacroross ss ththe e +0+0 ohm resistor is 10 volts, the resistance of (1 is.

ohm resistor is 10 volts, the resistance of (1 is. O Oppttiioon n AA.. + + oohhmmss.. O Oppttiioon n BB.. 11/ / oohhmmss.. O Oppttiioon n CC.. ++0 0 oohhmmss..

(8)

C

Coorrrerect ct AAnnsseer ir is.s. ++0 0 oohhmmss.. !"pla

!"planationnation.. ind tind the currenhe current throut through the +0 gh the +0 ohm reohm resistor ' % &sistor ' % &*( % 10**( % 10*+0 % 0.5+0 % 0.5-. 6he-. 6he same current goes through all parts of a series circuit. Ne"t find total circuit resistance ( % same current goes through all parts of a series circuit. Ne"t find total circuit resistance ( % &*' % +*0.5 % 5/ ohms-. ubtract +0 and 1/ from 5/.

&*' % +*0.5 % 5/ ohms-. ubtract +0 and 1/ from 5/.

Q

Quuesesttiioon n NNuummbberer.. .. 66hhe e ccuurrrreennt t iin n tthhe e cicirrccuuiit t shshoon n iis.s. O

Oppttiioon n AA.. 5 5 mmAA.. O

Oppttiioon n BB.. 00..+ + AA.. O

Oppttiioon n CC.. 5 5 AA.. C

Coorrrreecct t AAnnsseer r iiss.. 5 5 mmAA.. !"pla

!"planationnation.. 6o6otal ( % 0 8 ohmtal ( % 0 8 ohms. ' % &*( % +00*s. ' % &*( % +00*0,000 % 0.0,000 % 0.005A 005A % 5mA. do% 5mA. don?t forgn?t forget theet the ?8? means times b7 1000-.

?8? means times b7 1000-.

Qu

Quesestition on NuNumbmberer.. >>.. 'n 'n ththe fe fololloloiing ng cicircrcuiuit, t, ththe ie inpnput ut at at # # is is   amamps ps anand ad at Q t Q is is 55 amps. ;hat is the voltage across the / ohm resistor).

amps. ;hat is the voltage across the / ohm resistor). O

Oppttiioon n AA.. 55&&.. O

Oppttiioon n BB.. //&&.. O

Oppttiioon n CC.. 11..55&&.. C

Coorrrreecct t AAnnsseer ir iss.. 55&&.. !"pla

!"planationnation.. & % ' 2 ( % > 2 / % 5&& % ' 2 ( % > 2 / % 5&. . A A combincombination of @iation of @irchhorchhoff?s currff?s current la and Ohent la and Ohm?sm?s :a.

:a.

Q

Quuesesttiioon Nn Nuummbberer.. 00.. 66hhe ue unn88nnoon cn cuurrrreennt it in tn thhe ne neettoor8 r8 bbeleloo i is.s.

O

Oppttiioon n AA.. ++++AA.. O

Oppttiioon n BB.. AA.. O

Oppttiioon n CC.. ==AA.. C

Coorrrreecct t AAnnsseer ir iss.. AA.. !"p

!"planalanatiotion.n. @ir@irchhchhoffoff?s ?s curcurrenrent t lala..

Qu

Quesestition on NuNumbmberer.. 11.. 'n 'n a ba balalananceced ;d ;heheatatststonone be briridgdge, e, acacroross ss ththe ce cenentrtre oe of tf the he brbrididgege there is.

(9)

Op

Optition on AA.. cucurrrrenent t anand d vvololtatagge ae at t mma"a"imimumum.. O

Oppttiioon n BB.. nno o ccuurrrreennt t fflloo.. Op

Optition on CC.. nno o vovoltltagage e ppreresesent nt at at eieithther er enend.d. Co

Corrrrecect At Ansnseer isr is.. nno co cuurrrrenent ft flolo.. !"p

!"planalanatiotion.n. 6he a6he ammemmeter reter reads ads ero ero hen ihen it is balt is balancanced.ed.

Qu

Quesestition on NuNummbberer.. +.+. A A ++& & babatttterer7 h7 has as an an ininteternrnal al reresisiststanance ce of of 1 o1 ohhmm. ;. ;hehenn connected to a load, 1+ amps flos. 6he value of the load is.

connected to a load, 1+ amps flos. 6he value of the load is. O Oppttiioon n AA.. 11+ + oohhmmss.. O Oppttiioon n BB.. 11**+ + oohhmm.. O Oppttiioon n CC.. 1 1 oohhmm.. C

Coorrrreecct t AAnnsseer ir iss.. 1 o1 ohhmm.. !"pla

!"planationnation.. 6o6otal ( % &tal ( % &*' % +*1*' % +*1+ % + ohm+ % + ohms. ubts. ubtract the inract the internal reternal resistance tsistance to get theo get the e"ternal resistance i.e. the load-.

e"ternal resistance i.e. the load-.

Qu

Quesestition on NuNumbmberer.. .. A A papararallllel el cicircrcuiuit t itith ah an7 n7 nunumbmber er of of + + tetermrmininal al coconnnnecectitionons.s. Op

Optition on AA.. ththe ine indidivividudual al vovoltltagage de drorops ps is is e9e9uaual tl to to the he ememf.f. Op

Optition on BB.. hhas as ththe se samame e cucurrrrenent t ththrorouughghouout.t. Op

Optition on CC.. ththe ree resisiststanance ice is ds depepenendedennt ot on cn cuurrrrenent.t. Cor

Correct rect AnAnseser is.r is. the the indindiviividuadual vl voltoltage age drodrops ps is eis e9ua9ual to l to the the emfemf.. !"pla

!"planationnation.. #aralle#arallel circuil circuit  the vt  the voltagoltage drope drops across s across each breach branch is anch is the southe source volrce voltagetage regardless of the resistance in the branches-.

regardless of the resistance in the branches-.

Qu

Quesestition on NuNumbmberer.. .. 6h6he de diaiagrgram am shshoos s a a +0+00& 0& lolong ng shshununt t gegeneneraratotorr. . ;h;hat at is is ththee

voltage across the series resistor. voltage across the series resistor. O

Oppttiioon n AA.. 1100&&.. O

Oppttiioon n BB.. //&&.. O

Oppttiioon n CC.. 00&&.. C

Coorrrreecct t AAnnsseer r iiss.. //&&.. !"pla

!"planationnation.. 6he 0.6he 0.0 and 10 and 100 ohm 00 ohm resistoresistor are the fielr are the field indid indings of thngs of the generate generator, or, so theso the 100 amps goes through the 0.0/ ohm re

(10)

Qu

Quesestition on NuNumbmberer.. 55.. 66o o fifind nd ththe ie intnterernanal rl resesisistatancnce oe of a f a babatttterer7 i7 in a n a cicircrcuiuit ot of 8f 8nononn current.

current. O

Oppttiioon n AA.. uusse e tthhe fe foorrmmuulla a ( ( % % & & 2 2 ''.. Op

Optition on BB.. fifind nd ththe le loost st vovoltlts os of tf the he cicircrcuuitit.. O

Oppttiioon n CC.. ffiinnd d tthhe e ememf of of f tthhe e cciircrcuuiitt.. Co

Correrrect ct AAnsnseer isr is.. fifind nd ththe le losost vt vololts ts of of ththe cie circurcuitit.. !"pla

!"planationnation.. ind the difind the difference beference beteen the &teen the &ooltage Onlltage Onload and the &oad and the &ooltage Offltage Offload thload thee volts ?lost? across the internal resistance-, then use ( % &*' Ohm?s :a-.

volts ?lost? across the internal resistance-, then use ( % &*' Ohm?s :a-.

Qu

Quesestition on NuNummbberer.. /./. or or ththe de diaiagrgram am shshoon n fifind nd ththe ve vooltltagage e at at popoinint t B.B.

O

Oppttiioon n AA.. ==&&.. O

Oppttiioon n BB.. ++//&&.. O

Oppttiioon n CC.. 1100&&.. C

Coorrrreecct t AAnnsseer ir iss.. 1100&&.. !"pla

!"planationnation.. !ach res!ach resistor dristor drops its oops its on propn proportioortion of the von of the voltage. ltage. 6o6otal resistatal resistance is /0nce is /0 ohms. &

ohms. &ooltage dropped b7 ltage dropped b7  ohm resistor  ohm resistor is */0 2 is */0 2 0. &0. &ooltage dropped b7 ltage dropped b7 / ohm resistor / ohm resistor isis /*/0 2 0. 6otal dropped b7 point B is

/*/0 2 0. 6otal dropped b7 point B is 0*/0 2 0 % 0*/0 2 0 % +0&+0&. 6h. 6herefore, remaining erefore, remaining voltage at Bvoltage at B % 10&.

% 10&.

Qu

Quesestition on NuNummbberer.. =.=. 'n 'n a sa sererieies cs cirircucuit it iith th  r reesisiststorors, s, ththe ce cuurrrrenent it is.s. O

Oppttiioon n AA.. llooeer tr thhaan tn thhe se smmaalllleesstt.. Op

Optition on B.B. ththe toe totatal ol of alf all  ul  usising ng ohohmms las la t to fio find nd ththe cue currrrenent.t. O

Oppttiioon n CC.. eevveen n iin n aalll l .. Co

Corrrrecect t AAnsnseer ir is.s. eveven en in in alall l .. !"pla

!"planationnation.. 6he c6he current urrent is the is the same in same in all comall componenponents in ts in a seriea series circuis circuit.t.

Qu

(11)

O

Oppttiioon n AA.. + + &&.. O

Oppttiioon n BB.. ++0 0 &&.. O

Oppttiioon n CC.. 110 0 &&.. C

Coorrrreecct t AAnnsseer ir iss.. ++0 &0 &.. !"pla

!"planationnation.. ++ 4 /++ 4 /- % +0 & - % +0 & voltvoltage acrosage across both ths both the parallel ree parallel resistors isistors is the same +s the same +0 &-.0 &-.

Q

Quuesesttiioon n NNuummbberer.. >>.. ;;hhat at iis ts thhe ce cuurrrreennt t tthhrroouuggh h reressiiststoor Cr C))..

O

Oppttiioon n AA.. ..55AA.. O

Oppttiioon n BB.. 11AA.. O

Oppttiioon n CC.. >>AA.. C

Coorrrreecct t AAnnsseer ir iss.. ..55AA.. !"pla

!"planationnation.. FFoou need tu need to 8no o 8no hat the ohat the ohmic valhmic value of resiue of resistor C is to 8stor C is to 8no thno the currene currentt through it, or at least the relative value of C compared to $  as the >A current splits through through it, or at least the relative value of C compared to $  as the >A current splits through C and $. 't is >A*+ .5A- onl7 if C and $ are the same. Besides, it cannot ever be >A or C and $. 't is >A*+ .5A- onl7 if C and $ are the same. Besides, it cannot ever be >A or 1A.

1A.

Q

Quueessttiioon Nn Nuummbbeerr.. 5500.. ;h;hiicch ih is ns noot tt thheerrmmaallll7 o7 oppeerraatteedd)).. O

Oppttiioon n AA.. A A lliimmiittiinng g rreessiissttoorr.. O

Oppttiioon n BB.. A A ccuurrrreennt t lliimmiitteerr.. O

Oppttiioon n CC.. A A ffuussee.. Co

Corrrrecect t AAnsnseer ir is.s. A A lilimimititing ng reresisiststoror.. !

Q

(12)

O

Oppttiioon n AA.. aan n eelleeccttrroommaaggnneett.. O

Oppttiioon Bn B.. a pa peerrmmaanneennt mt maaggnneett.. O

Oppttiioon n CC.. aan n AAC C mmaaggnneett.. Co

Corrrrecect t AAnsnseer ir is.s. a pa perermamanenent nt mamagngnetet.. !

Qu

Quesestition on NuNumbmberer.. 5+5+.. A A loload ad ththat at is is susubGbGecect tt to o a pa pototenentitial al didiffffererenence ce iith th a ca cururrerentnt running through it ill.

running through it ill. Op

Optition on AA.. hahave a mve a magagnenetitic fiec field ald arorounund it d it itith thh the mae magngnititudude ane and did direcrectiotion of tn of the fhe fielieldd determined b7 the cor8scre rule.

determined b7 the cor8scre rule. Op

Optition on BB.. ddisissisipapate te ppooer er in in ththe fe fororm om of hf heaeat.t. Op

Optition Con C.. iill mll movove in e in a dia direrectctioion shn shoon bn b7 t7 the rhe rigight ht hahand nd rurulele.. Co

Correrrect ct AAnsnseer isr is.. didississipapate pte pooer ier in tn the fhe fororm om of hf heateat.. !

07a. Resistance/Resistor. 07a. Resistance/Resistor.

Q

Quueessttiioon n NNuummbbeerr.. 11.. 66hhe e rreessiissttaanncce e oof f a a mmaatteerriiaal l iiss.. Op

Optition on AA.. inindedepependndenent ot of tf thhe me matatereriaial tl t77pepe.. O

Oppttiioon n BB.. tthhe se samame e aas is itts cs coonndduuccttaanncce.e. Op

Optition on CC.. ththe re rececipiprorocacal ol of if its ts coconnduductctanancece.. Co

Correrrect ct AAnsnseer isr is.. ththe ree reciciprprococal oal of if its ts cocondnducuctatancence.. !

Qu

Quesestition on NuNummbberer.. ++.. ((esesisistatancnce e is is memeasasuurered d uusisinng g hhat at uuninit t oof f tetemmpeperaratuturere).). O

Oppttiioon n AA.. AAbbssoolluuttee.. O

Oppttiioon n BB.. CCeennttiiggrraaddee.. O

Oppttiioon n CC.. aahhrreennhheeiitt.. C

Coorrrerect ct AAnnsseer ir is.s. AAbbsosolluutete.. !

Qu

Quesestition on NuNummbberer.. .. A A reresisiststoor hr has as  b banands ds on on it it cocololourured ed blbluue, e, 77elellolo, , 77elellolo, , gogoldld.. 'tHs value is. 'tHs value is. O Oppttiioon n AA.. //0 0 88I I J J 55KK.. O Oppttiioon n BB.. //..  mmI I J J 1100KK.. O Oppttiioon n CC.. //  88I I J J 55KK.. C

Coorrrerect ct AAnnsseer ir is.s. //0 80 8I J I J 55KK.. !

Qu

Quesestition on NuNummbberer.. .. 66hhe ee elelectctroron n flflo o ththrorouugh gh a a cocondnducuctotor r ilill l bbe de dececrereasased ed ththee most if the cross sectional area.

most if the cross sectional area. Op

Optition on AA.. is is dedecrcreaeasesed d anand d ththe le lenengtgth h is is inincrcreaeasesed.d. Op

Optition on BB.. anand td the he lelenngtgth h arare be bototh h dedecrcreaeasesed.d. Op

(13)

Co

Correrrect ct AAnsnseer is.r is. is dis decrecreaeased sed anand thd the lee lengngth ith is ins increcreaseased.d. !

Qu

Quesestition on NuNummbberer.. 5..5 mmalall rl resesisistotors rs totoo so smmalall ol or mr misissshhapapen en fofor tr thhe ae apppplilicacatition on ofof colour are mar8ed instead using.

colour are mar8ed instead using. Op

Optition on AA.. an an ababbrbreveviaiateted d reresisiststanance ce vavalulue.e. O

Oppttiioon n BB.. a a lleetttteer r ccooddee.. O

Oppttiioon n CC.. a a ddoot t ccooddee.. Co

Corrrrecect t AAnsnseer ir is.s. a la letetteter cr coodde.e. !

Qu

Quesestition on NuNummbberer.. /../ 66ootatal rl resesisistatannce ce in in a pa pararalallelel rl resesisistotor cr cirircucuitit, o, of (f (1 a1 and nd (+ (+ isis.. O Oppttiioon n AA.. ((6 6 % % 11**((1 1 4 4 11**((++.. O Oppttiioon n BB.. 11*(*(6 6 % % ((1 1 2 2 ((++- - L L ((1 1 4 (4 (++--.. O Oppttiioon n CC.. 11**((6 6 % % 11**((1 1 4 4 11**((++.. Co

Corrrrecect t AAnsnseer ir is.s. 1*1*((6 6 % 1% 1*(*(1 4 1 4 1*1*(+(+.. !

Qu

Quesestition on NuNummbberer.. =..= 'f 'f ththe re resesisistatannce ce oof a f a reresisiststor or hihich ch is is in in seseriries es iith th tto o ototheherr resistors is doubled.

resistors is doubled. Op

Optition on AA.. ththe ce cururrerent nt in in ththat at reresisiststanance ce is is dodoububleled.d. Op

Optition on B.B. ththe ve vololts ts drdrop op acacroross ss ththat at reresisiststor or inincrcreaeaseses.s. Op

Optition on C.C. ththe ce cururrerent nt in in ththat at reresisiststanance ce is is hahalvlveded.. Co

Correrrect Act Ansnseer is.r is. ththe vole volts dts drorop acrp acrososs thas that rest resisistotor inr increcreasases.es. !"pla

!"planationnation.. 6he cur6he current ilrent ill reduce, l reduce, but nobut not halvet halved, since id, since it dependt depends on ho bs on ho big the oig the otherther to resistors are in relation to it. 't ill hoever ta8e a greater share of the voltage drop in to resistors are in relation to it. 't ill hoever ta8e a greater share of the voltage drop in the circuit.

the circuit.

Q

Quueessttiioon Nn Nuummbbeerr.. .. 66hhe te toottaal rl reessiissttaanncce oe of tf thhe ce ciirrccuuiit st shhoon in iss..

O Oppttiioon n AA..   OOhhmmss.. O Oppttiioon n BB.. 11..  OOhhmmss.. O Oppttiioon n CC.. 11+ + OOhhmmss.. C

Coorrrerect ct AAnnsseer r iis.s.   OOhhmms.s. !"pla

!"planationnation.. eries  eries  4  % / o4  % / ohms. hms. 6hen6hen, to / , to / ohm reohm resistors sistors in parain parallel, tollel, total is htal is half % alf %  ohms.

(14)

..

Q

Quueessttiioon n NNuummbbeerr.. >>.. ##ootteennttiioommeetteerrs as arre ue usseed ad as as a.. O

Oppttiioon n AA.. vvaaririabablle e vvoollttaagge e ssoouurcrcee.. O

Oppttiioon Bn B.. vvaarriiaabblle re reessiissttoorr.. O

Oppttiioon n CC.. vvaaririabablle e ccuurrrreennt t ssoouurrccee.. Co

Corrrrecect t AAnsnseer ir is.s. vavaririabable le reresisiststoror.. !"p

!"planalanatiotion.n. #ot#otententiomiometereters are not a ?sous are not a ?sourcerce? of volt? of voltageage..

Qu

Quesestition on NuNummbberer.. 10.10. 'n 'n a ;a ;hheaeatststotone ne BBriridgdge, e, ththe ae ammmmeteter er rereadads s erero, o, anand td thehe

variable resistor is adGusted to 5 ohms. (esistor # has a value of 10 ohms and Q has a value of variable resistor is adGusted to 5 ohms. (esistor # has a value of 10 ohms and Q has a value of 100 ohms. ;hat is the value of the un8non resistor).

100 ohms. ;hat is the value of the un8non resistor). O Oppttiioon n AA.. 5 5 oohhmmss.. O Oppttiioon n BB.. 00..5 5 oohhmmss.. O Oppttiioon n CC.. 550 0 oohhmmss.. C

Coorrrerect ct AAnnsseer ir is.s. 00..5 o5 ohhmms.s. !"

!"plplananatatioion.n. ( % ( % (v (v 2 #2 #*Q*Q..

Qu

Quesestition on NuNumbmberer.. 1111.. 'n 'n gegeneneraral, l, inincrcreaeasising ng ththe ce croross ss sesectctioionanal al arerea oa of af an n elelecectrtricicalal cable.

cable. O

Oppttiioon n AA.. iinnccrereaasses es iitts s reressiiststaanncce.e. Op

Optition on BB.. enenabableles s it it to to cacarrrr7 7 mmoore re vovoltltagage.e. Op

Optition on CC.. enenabableles s it it to to cacarrrr7 7 mmoore re cucurrrrenent.t. Co

Correrrect ct AAnsnseer isr is.. enenablables es it tit to co cararr7 mr7 more ore cucurrrrenent.t. !"pla

!"planationnation.. Det the Det the formuformula for rla for resistanesistance of a cace of a cable. 'f ble. 'f 7ou i7ou increase tncrease the croshe cross sectios sectionalnal area, its resistance ill decrease and it can carr7 more current. ?Carr7ing voltage? is not area, its resistance ill decrease and it can carr7 more current. ?Carr7ing voltage? is not

technicall7 correct terminolog7, and besides, An7 sie cable can ?carr7? an7 sie voltage, but it technicall7 correct terminolog7, and besides, An7 sie cable can ?carr7? an7 sie voltage, but it is the current hich ill destro7 it.

is the current hich ill destro7 it.

Q

Quuesesttiioon n NNuummbberer.. 11++.. ii" " reressiiststoorrs s eeacach h oof f / / oohhmms s oouulld d bbe.e. O

Oppttiioon n AA.. 1 1 oohhm m iin n sseerriieess.. O

Oppttiioon n BB.. 1 1 oohhm m iin n ppaarraalllleell.. O

Oppttiioon Cn C.. / / oohhmms is in pn paarraalllleell.. Co

Corrrrecect At Ansnseer isr is.. 1 o1 ohm hm in in ppararalallelel.l. !"pla

!"planationnation.. Det the Det the formuformulas for rlas for resistoresistors in pas in parallel anrallel and resistd resistors in ors in series. series. Or, Or, remembrememberer that resistors in series, total is greater than the largest, and resistors in parallel, total is less that resistors in series, total is greater than the largest, and resistors in parallel, total is less than the smallest.

than the smallest.

Q

(15)

O

Oppttiioon n AA.. rreessiissttaannccee.. O

Oppttiioon n BB.. ccuurrrreenntt.. O

Oppttiioon n CC.. vvoollttaaggee.. C

Coorrrerect ct AAnnsseer ir is.s. vvoollttaaggee.. !"pla

!"planationnation.. A A potenpotentiomettiometer is er is basicallbasicall7 a 7 a variabvariable vole voltage ltage splittesplitter.r.

Q

Quuesesttiioon n NNuummbberer.. 11.. 66hhe fe foorrmmuulla fa foor rr reessiiststaanncce ie in sn seeririees is is.s. O Oppttiioon n AA.. ((6 6 % (% (1 1 4 (4 (+ + 4 4 ((  ...((nn.. O Oppttiioon Bn B.. ((6 6 % (% (1 1 2 2 ((+ + 2 2 ((  ...((nn.. Op Optition on CC.. 11*(*(6 6 % % 1*1* ( (1 1 2 2 ((+ + 2 2 ((  ...(.(nn-.-. Co

Corrrrecect At Ansnseer isr is.. (6 (6 % (% (1 4 (1 4 (+ 4 (+ 4 ( . ...(n(n.. !

Qu

Quesestition on NuNummbberer.. 15.15. ;;hahat it is ts thhe ce coombmbinined ed vvalaluue oe of rf resesisistatannceces os of  of  ohm hm anand / od / ohmhm connected in parallel). connected in parallel). O Oppttiioon n AA.. 00..++  oohhmm.. O Oppttiioon n BB.. ++..  oohhmm.. O Oppttiioon n CC.. ++  oohhmm.. C

Coorrrerect ct AAnnsseer ir is.s. ++..  oohhmm.. !"pla

!"planationnation.. (esisto(esistors in pars in parallel, rallel, the totthe total resistal resistance iance ill be lell be less than tss than the smahe smallest bllest but onl7ut onl7 slightl7 less-.

slightl7 less-.

Qu

Quesestition on NuNumbmberer.. 1/1/.. 'f 'f a a nunumbmber er of of reresisiststorors as are re coconnnnececteted d in in papararallllelel, , ththe e tototatall resistance is.

resistance is. O

Oppttiioon n AA.. ssmmaalllleer tr thhaan tn thhe le looeesstt.. O

Oppttiioon n BB.. tthhe e ssaamme e aas s tthhe e llooeesstt.. O

Oppttiioon Cn C.. ggrreeaatteer tr thhaan tn thhe le looeesstt.. Co

Corrrrecect At Ansnseer isr is.. smsmalalleler tr thahan tn the he loloeestst.. !"pla

!"planationnation.. (esisto(esistors in paralrs in parallel. 6lel. 6otaotal resistanl resistance is smallece is smaller than the lr than the loest sioest single resingle resistorstor..

Qu

Quesestition on NuNummbberer.. 1=.1=. 66hhe re resesisistatannce ce to to elelecectrtricical al flfloo i in a n a iire re ddepepenends ds onon.. Op

Optition on AA.. ththe de diamiameteeter, r, lelengngthth, m, mateateriarial ol of f irire ae and nd temtempeperatraturure.e. Op

Optition on BB.. ththe me matatereriaial ol onnl7 l7  co copppeper or or alr alumumininiuiumm.. Op

Optition on C.C. ththe le lenengtgth ah and nd mamateteririal al of of ththe e irire oe onlnl77.. Cor

Correct rect AnAnseser is.r is. the the diadiametmeter, er, lenlengthgth, ma, materiterial oal of if ire are and tnd tempemperateratureure.. !"pla

!"planationnation.. Det the Det the formuformula for rla for resistanesistance of a coce of a conductonductor, r, and doand don?t fon?t forget trget that mohat mostst materials have a positive temperature coefficient.

materials have a positive temperature coefficient.

Qu

Quesestition on NuNummbberer.. 1.1. ;;hehen rn resesisistotors rs arare ie in pn pararalallelel tl thhe toe totatal cl cuurrrrenent it is e9s e9uaual tl to.o. Op

Optition on AA.. ththe ce cururrerent nt ththrorougugh oh one ne reresisiststoror.. O

Oppttiioon n BB.. tthhe se suum m oof f tthhe e ccuurrrreennttss.. Op

Optition on CC.. ththe re rececipiprorocacal ol of af all ll ththe ce cuurrrrenentsts.. Co

Corrrrecect t AAnsnseer ir is.s. the sthe sum um of of ththe ce cururrerentnts.s. !

(16)

Qu

Quesestition on NuNummbberer.. 1>.1>. ;;hihich ch oof tf thehese se iill ll cacaususe te thhe re resesisistatancnce oe of a cf a coondnducuctotor tr too decrease).

decrease). Op

Optition on AA.. $e$ecrcreaease tse the he lelengngth th or or ththe cre crosossssesectctioionanal arl areaea.. Op

Optition on B.B. 'n'ncrcreasease te the he lelengngth th or or dedecrecreasase te the he crocrosssssesectictiononal al arearea.a. Op

Optition on C.C. $e$ecrcreasease te the he lenlengtgth h or or inincrecrease ase ththe ce crorosssssesectictiononal al arearea.a. Cor

Correct rect AnAnseser is.r is. $ec$ecreasrease the the lee lengtngth oh or inr increacrease tse the che crosrosssessectioctional nal areaarea.. !"p

!"planalanatiotion.n. Det thDet the forme formula foula for resir resistanstance of a conce of a conducductortor..

Qu

Quesestition on NuNumbmberer.. +0+0.. 'f 'f + r+ resesisistotorsrs, o, one ne rered, d, 77elellolo, , blblacac8, 8, gogold ld anand td the he ototheher vr vioiolelet,t, blue, blac8, silver ere replaced b7 a single resistor. 'gn

blue, blac8, silver ere replaced b7 a single resistor. 'gnoring tolerance, hat ould theoring tolerance, hat ould the colour coding be).

colour coding be). O

Oppttiioon n AA.. BBrroonn, , bbllaacc88, , bbrroonn.. O

Oppttiioon n BB.. BBllaacc88, , bbrroonn, , bbllaacc88.. O

Oppttiioon n CC.. BBrroonn, , bbllaacc88, , bbllaacc88.. Co

Corrrrecect t AAnsnseer ir is.s. BrBroon, n, blblacac8, 8, brbroon.n. !"pla

!"planationnation.. 6he red6he red*7ello*7ello*blac*blac8 resist8 resistor is +or is + ohm ohms get a s get a coloucolour code cr code chart-. hart-. 6he6he violet*blue*blac8 resistor is

violet*blue*blac8 resistor is =/ ohms. 6o=/ ohms. 6otal is 100 ohms. A 100 ohm resistor istal is 100 ohms. A 100 ohm resistor is bron*blac8*bron.

bron*blac8*bron.

Qu

Quesestition on NuNummbberer.. ++1.1. A A = 8= 8ililohohm rm resesisistotor hr has as ththe fe fololloloiing ng cocololouur cr cododeMeM.. O

Oppttiioon An A.. FFeelllloo, &, &iioolletet, O, Orraannggee.. O

Oppttiioon Bn B.. ((eedd, O, Orraannggee, , FFeelllloo.. O

Oppttiioon n CC.. OOrraannggee, , &&iioolleett, , ((eedd.. Co

Correrrect ct AAnsnseer isr is.. FFeelllloo, , &&iiololet, et, OrOranangege.. !

Qu

Quesestition on NuNumbmberer.. ++..++ 6h6he be briridgdge e cicircrcuiuit st shohon n iill ll be be babalalancnced ed hhen en ththe ve valalue ue ofof

the un8non resistor ( is. the un8non resistor ( is. O Oppttiioon n AA.. + + oohhmmss.. O Oppttiioon n BB.. 11  oohhmmss.. O Oppttiioon n CC.. 11  oohhmmss.. C

Coorrrerect ct AAnnsseer r iis.s. + + oohhmms.s. !"

(17)

Qu

Quesestition on NuNummbberer.. +.+. A A 00 00 ohohm m reresisiststoor r ooululd d hahavve e a ca coololouur r cocode de ofof.. O

Oppttiioon n AA.. oorraannggee, b, brroonn, , bbllaacc88.. O

Oppttiioon Bn B.. oorraannggee, o, orraannggee, b, brroonn.. O

Oppttiioon n CC.. oorraannggee, , bbllaacc8 8 bbrroonn.. Co

Corrrrecect t AAnsnseer ir is.s. ororanangege, b, blalac8 c8 brbroon.n. !

Q

Quueessttiioon n NNuummbbeerr.. ++.. ''n n tthhiis s cciirrccuuiitt, , ((" " iis s ee99uuaal l ttoo..

O Oppttiioon n AA.. ((+ + 2 2 ((  L L ((.. O Oppttiioon n BB.. ((  2 2 ((  L L ((++.. O Oppttiioon n CC.. ((  2 2 ((+ + L L ((.. C

Coorrrerect ct AAnnsseer ir is.s. (( 2  2 ((+ L + L ((.. !"pla

!"planationnation.. AssumAssuming thing the diage diagram is inram is incompcomplete no lete no cross bcross branch ranch ith a eith a eroed amroed ammetermeter as per a

(18)

Q

Quuesesttiioon Nn Nuummbberer.. ++55.. ''n a pn a paararallllel el cicircrcuuiit ct coonnttaaiinniinng rg reesisiststoorrs.s. Op

Optition on AA.. ththe se sum um of of ththe ve vololtatage ge drdropops es e9u9uals als apapplplieied vd vololtatagege.. Op

Optition on B.B. ththe ve vololtatage ge is is ththe se samame ie in an all ll papartrts os of tf the he cicircrcuiuit.t. Op

Optition Con C.. reresisiststanance ice is des detetermrminined ed b7 b7 vavalulue of e of cucurrrrenent flt floo.. Co

Correrrect Act Ansnseer is.r is. ththe voe voltltagage is te is the sahe same ime in aln all pal partrts of ths of the cire circucuitit.. !"pla

!"planationnation.. 'n a p'n a parallel arallel circuitcircuit, the , the voltagvoltage acrose across each s each resistoresistor is tr is the samehe same..

Qu

Quesestition on NuNumbmberer.. +/+/.. iive ve didiffffererenent vt valalue ue reresisiststorors as all ll hahave ve ththe se samame ve vololtatage ge drdropoppepedd across them. 3o are the resistors connected).

across them. 3o are the resistors connected). O

Oppttiioon n AA.. ''n n eerriieess**##aarraalllleell.. O

Oppttiioon n BB.. ''n n eerriieess.. O

Oppttiioon n CC.. ''n n ##aarraalllleell.. Co

Corrrrecect t AAnsnseer ir is.s. 'n 'n #a#ararallllelel.. !"pla

!"planationnation.. (esisto(esistors in prs in parallel arallel ith eith each oach other alther all have l have the sathe same vome voltage dltage drop.rop.

Qu

Quesestition on NuNumbmberer.. +=+=.. CoCondnducuctatancnce oe of a f a cicircrcuiuit t is is + + mimilllliihohos. s. ;h;hat at is is itits rs resesisistatancnce)e).. O Oppttiioon n AA.. 5500000 0 OOhhmmss.. O Oppttiioon n BB.. 55000 0 OOhhmmss.. O Oppttiioon n CC.. 5 5 eeggoohhmmss.. C

Coorrrerect ct AAnnsseer ir is.s. 55000 O0 Ohhmmss.. !"pla

!"planationnation.. CondConductancuctance is the e is the ease at hease at hich cuich current flrrent flos. 't os. 't is the iis the inverse nverse of resisof resistance.tance. 6he unit ?ho? is ?Ohm? bac8ards-. Conductance % +*1000 hos. 6herefore (esistance % 6he unit ?ho? is ?Ohm? bac8ards-. Conductance % +*1000 hos. 6herefore (esistance % 1000*+ Ohms.

1000*+ Ohms.

Qu

Quesestition on NuNummbberer.. ++.. ;;hehen n liligght ht hihits ts a a pphohototoddioiodede, , itits s reresisiststanancece.. O

Oppttiioon n AA.. ssttaa77s s tthhe e ssaammee.. O

Oppttiioon n BB.. iinnccrreeaasseess.. O

Oppttiioon n CC.. ddeeccrreeaasseess.. C

Coorrrerect ct AAnnsseer isr is.. ddeecrcreeaasesess.. !"p

!"planalanatiotion.n. (es(esistaistance decnce decreasreases ith lies ith light inght intentensit7sit7..

Q

Quueessttiioon Nn Nuummbbeerr.. ++>>.. A + A + eeggoohhm rm reessiissttoor cr caan bn be e rriitttteenn.. O Oppttiioon n AA.. ++00.. O Oppttiioon n BB.. ++00.. O Oppttiioon n CC.. ++00.. C

Coorrrreecct At Annsseer ir iss.. ++00.. !"pla

!"planationnation.. ometometimes the mimes the multipultiplier, lier, li8e  foli8e  for meg-, or meg-, or @ for 8ilr @ for 8ilo- or ( fo- or ( for 1- is puor 1- is putt in place of the decimal point. 6he last letter is the tolerance. ee orum for more info.

in place of the decimal point. 6he last letter is the tolerance. ee orum for more info.

Qu

Quesestition on NuNumbmberer.. 00.. 'n 'n a a ;h;heaeatststotone ne brbrididge ge at at babalalancnce e ththe ge galalvavanonomemeteter rr reaeads ds eeroro.. O

(19)

O

Oppttiioon n BB.. oohhmmss.. O

Oppttiioon n CC.. vvoollttss.. C

Coorrrreecct t AAnnsseer ir iss.. aammppss.. !

Q

Quueessttiioon n NNuummbbeerr.. 11.. 66hhe ue unniit t ffoor r rreessiissttiivviit7 t7 iis s tthhee.. O

Oppttiioon An A.. oohhmmss**ss99uuaarre me meetteerr.. O

Oppttiioon n BB.. oohhmmss**mmeetteerr.. O

Oppttiioon Cn C.. oohhmm..mmeetteerr.. Co

Corrrrecect t AAnsnseer r isis.. oohmhm.m.meteterer.. !"

!"plplananatatioion.n. N'N':.:. hthttptpM*M**en*en..i8i8ipipediedia.a.ororg*g*ii8i8i*!*!lelectrctricicalalreresisistastancncee

Qu

Quesestition on NuNumbmberer.. ++.. A A = = @i@ilolohm hm reresisiststor or iith th a a 1010K K totolelerarancnce e hahas s ththe e fofollllooiningg colour codeM.

colour codeM. Op

Optition on AA.. FFeelllloo, &, &iioolelet, Ot, Orarangnge, e, ililveverr.. O

Oppttiioon Bn B.. OOrraannggee, &, &iioolletet, (, (eded, D, Doolldd.. Op

Optition on CC.. ((eded, O, Oraranngege, , FFeelllloo, , iilvlverer.. Co

Correrrect Act Ansnseer is.r is. FFeelllloo, &, &iiololet, Oet, Oranrangege, i, ilvlverer.. !"pla

!"planationnation.. Aircraft Aircraft !lectric!lectricit7 it7 and and !lectr!lectronics onics !ismi!ismin #n #age age 100.100.

Qu

Quesestition on NuNumbmberer.. .. 6h6he te tototal al reresisiststanance ce in in a ca cirircucuit it is is grgreaeateter tr thahan tn the he leleasast rt resesisistotorr.. 6his is true for a.

6his is true for a. O

Oppttiioon n AA.. ssereriiees as annd pd pararaalllelel cl ciirrccuuitit.. O

Oppttiioon n BB.. sseerriiees s cciirrccuuiit t oonnll77.. O

Oppttiioon Cn C.. ppaarraalllleel cl ciirrccuuiit ot onnll77.. Co

Corrrrecect t AAnsnseer ir is.s. seseriries es cicircrcuiuit ot onlnl77.. !

07b. Resistance/Resistor. 07b. Resistance/Resistor.

Qu

Quesestition on NuNummbberer.. 11.. 66hhe ue un8n8nonon n reresisiststanance ce ( ( in in ththe e ;;heheatatststoone ne brbrididge ge shshoon n isis..

O Oppttiioon n AA..   oohhmmss.. O Oppttiioon n BB.. 11/ / oohhmmss.. O Oppttiioon n CC.. 1 1 oohhmm.. C

Coorrrerect ct AAnnsseer r iis.s.   oohhmms.s. !"p

!"planalanatiotion.n. ( % + 2 *( % + 2 *. (e. (ead up oad up on ;hn ;heateatstonstone brie bridgedges.s. Q

(20)

O

Oppttiioon n AA.. a va viissuuaal dl diispsplla7 a7 rereccttiififieerr.. Op

Optition on BB.. a va varariaiabble le ddififffererenentitial al reresisiststoror.. O

Oppttiioon Cn C.. a va voollttagage de deeppeennddaannt rt reesisiststoorr.. Co

Correrrect ct AAnsnseer ir is.s. a va vololtatage ge dedepependndanant rt resiesiststoror.. !"p

!"planalanatiotion.n. &$( % &&$( % &ooltagltage $epene $ependandant (esist (esistortor..

Qu

Quesestition on NuNummbberer.. .. A A ppototenentitiomometeter er hhas as hihich ch oof f ththe e fofollllooining g prproopepertrtieies)s).. O

Oppttiioon n AA.. ;;iirre e oouunndd.. O

Oppttiioon n BB..   tteerrmmiinnaallss.. O

Oppttiioon n CC.. ##rreesseet t vvaalluueess.. Co

Corrrrecect t AAnsnseer ir is.s.   tetermrmininalals.s. !

Qu

Quesestition on NuNummbberer.. .. AAn in inncrcreaease se in in opopereratatining tg tememppereratatuure re in in mmoost st elelecectrtricical al dedevivicecess carr7ing current results in.

carr7ing current results in. Op

Optition on AA.. a dea decrcreaease ise in ren resisiststanance ace and nd an ian incncrereasase in e in cucurrrrenent.t. Op

Optition on BB.. nno eo efffefect oct on tn the he reresisiststanance ce anand cd cuurrrrenent.t. Op

Optition on C.C. an an inincrcreaease ise in rn resesisistatancnce ane and a dd a dececrereasase ie in cn cururrerentnt.. Cor

Correct rect AnAnseser isr is.. an an incincreasrease ie in rn resisesistantance ace and nd a da decreecrease ase in in curcurrenrent.t. !"pla

!"planationnation.. ost coost conductnductors havors have a ?positie a ?positive tempve temperature coerature coefficieefficient?. 6nt?. 6he e"cephe e"ceptions artions aree semiconductors.

semiconductors.

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Quesestition on NuNummbberer.. 55.. CCopoppeper ir is as an n ininfeferirioor cr coondnducuctotor tr to ao alulummininiuium m hehen cn comompapariringng.. O

Oppttiioon n AA.. CCA A iitth h CCAA.. O

Oppttiioon n BB.. eeiigghht t ffoor r eeiigghhtt.. O

Oppttiioon n CC.. llooaad d ffoor r llooaadd.. Co

Corrrrecect t AAnsnseer ir is.s. eeigight ht fofor r eeigightht.. !"pla

!"planationnation.. CoppCopper is a betteer is a better inducr inductor but ator but aluminiluminium is muum is much lighch lighter. ter. CA CA % cross% cross sectional area

sectional area not Child upport Agenc7-.not Child upport Agenc7-.

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Quesestition on NuNummbberer.. /../ ;;hahat t hahapppepens ns to to ththe re resesisistatancnce oe of a f a cocopppper er cocondnduuctctoor r hehen tn thhee temperature increases).

temperature increases). O

Oppttiioon n AA.. ''t t ddeeccrreeaasseess.. O

Oppttiioon n BB.. ''t t iinnccrreeaasseess.. O

Oppttiioon n CC.. ''t t rreemmaaiinns s tthhe e ssaammee.. Co

Corrrrecect t AAnsnseer ir is.s. 't 't inincrcreaeaseses.s. !"pla

!"planationnation.. All matAll materials e"erials e"cepts semcepts semicondiconductors uctors have a phave a positivositive tempee temperature crature coeffioefficient.cient.

Q

Quueessttiioon n NNuummbbeerr.. ==.. CCaarrbboon n hhaas s aa.. Op

Optition on AA.. tetemmpeperaratuture re cocoefeffificicienent ot of f ereroo.. Op

Optition on BB.. ppososititivive te tememppereratatuure re cocoefeffficicieientnt.. Op

Optition on CC.. nnegegatativive te temempeperaratuture re cocoefeffificicienent.t. Co

(21)

!"pla

!"planationnation.. CarboCarbon is a semn is a semicondiconductoructor, so , so its resisits resistance retance reduces iduces ith temth temperatuperature.re.

Q

Quuesesttiioon n NNuummbberer.. .. 66hhe 5e 5tth ch coolloouurered bd baannd d oon a n a rreesisissttoor rr reeppreresesenntts ts thhee.. Op

Optition on AA.. rereliliababililitit7 7 or or tetemmpeperaratuture re cocoefeffificicienent.t. O

Oppttiioon n BB.. ttoolleerraannccee.. O

Oppttiioon n CC.. mmuullttiipplliieerr.. C

Coorrrerect ct AAnnsseer isr is.. ttoolelerraannccee.. !

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Quesestition on NuNummbberer.. >..> 'f 'f ththe te temempeperaratuture re oof a f a pupure re memetatal il is rs rededuuceced td to ao abbsosolulute te eeroro,, its resistance ill be.

its resistance ill be. O

Oppttiioon n AA.. uunnaaffffeecctteedd.. O

Oppttiioon n BB.. pprraaccttiiccaallll7 7 eerroo.. O

Oppttiioon n CC.. iinnffiinniitt77.. Co

Corrrrecect At Ansnseer isr is.. ppraractcticicalall7 l7 erero.o. !

Q

Quuesesttiioon n NNuummbberer.. 1100.. ;;hhat at iis s rreepprreesesennteted d b7 b7 tthhiis s ddiiaaggraramm))..

O

Oppttiioon n AA.. 66hheerrmmiissttoorr.. O

Oppttiioon Bn B.. ((hheeoossttaatt.. O

Oppttiioon Cn C.. ##ootteennttiioommeetteerr.. Co

Corrrrecect At Ansnseer isr is.. ##ototenentitiomometeterer.. !"pla

!"planationnation.. A A potenpotentiomettiometer has er has  con connectionections, a ns, a rheostrheostat has at has onl7 onl7 +.+.

Qu

Quesestition on NuNummbberer.. 1111.. 'f 'f a ra reesisiststor or is is totoo so smmalall ol or mr misisshshapapen en to to fifit tt the he cocololour ur cocoddee bands, ho else is it?s value indicated).

bands, ho else is it?s value indicated). O

Oppttiioon n AA.. $$oottss.. O

Oppttiioon n BB.. NNuummbbeer r ccooddee.. O

Oppttiioon n CC.. ::eetttteer r ccooddee.. Co

Corrrrecect t AAnsnseer ir is.s. ::etetteter cr coodede.. !

Q

(22)

O

Oppttiioon n AA.. ::iigghht $t $eeppeennddaannt (t (eesisissttoorr.. O

Oppttiioon Bn B.. ::aasseer $r $iioodde (e (eeccttiiffiieerr.. Op

Optition on CC.. ::ogogararitithmhmic $ic $ififfefererentntiaial (l (esesisistotorr.. Co

Corrrrecect At Ansnseer is.r is. :i:ighght $et $epependndanant (et (esisiststoror.. !

Q

Quueessttiioon n NNuummbbeerr.. 11.. 66hhiis is is a s a ddiiaaggrraam m oof f aa.. O

Oppttiioon An A.. &&aaririaabble le &&oollttagage se soouurrcece.. O

Oppttiioon n BB.. &&aaririaabble le CCuurrrreennt t ssoouurrcece.. O

Oppttiioon n CC.. &&aarriiaabblle e ((eessiissttoorr.. Co

Corrrrecect At Ansnseer isr is.. &&aaririabable le (e(esisiststoror.. !"pla

!"planationnation.. A A potenpotentiomettiometer is er is not not a voa voltage ltage or cuor current rrent ?source?source?.?.

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Quesestition on NuNumbmberer.. 11.. (e(esisiststorors rs re9e9uiuirered d to to cacarrrr7 7 a a cocompmpararatativivelel7 7 hihigh gh cucurrrrenent t anandd dissipate high poer are usuall7 of.

dissipate high poer are usuall7 of. O

Oppttiioon n AA.. ;;iirre e oouunnd md meettaal tl t77ppee.. O

Oppttiioon n BB.. CCaarrbboon n ccoommppoouunnd d tt77ppee.. O

Oppttiioon n CC.. ;;iire re oouunnd d ccereramamic ic tt77ppe.e. Co

Corrrrecect At Ansnseer isr is.. ;;iire re ouound nd cecerarammic tic t77pepe.. !"pla

!"planationnation.. Aircraft Aircraft !lectric!lectricit7 anit7 and !led !lectronctronics b7 ics b7 !ismin!ismin, Cha, Chapter /pter /, pg , pg 101.101.

Q

Quueessttiioon Nn Nuummbbeerr.. 1155.. A A tthh77rriissttoorr.. Op

Optition on AA.. if if enenerergigieed od on, n, iill ll ssititch ch on on a ca cirircucuitit.. Op

Optition on B.B. hahas s a a poposisititive ve tetempmpererataturure e cocoefeffificicienent.t. Op

Optition on C.C. if if enenerergigieed od on, n, iill ll ssititch ch ofoff f a ca cirircucuitit.. Co

Correrrect ct AAnsnseer is.r is. if eif enenergrgiied oed on, n, ilill sl sititch och on a cn a circircuiuit.t. !"p

!"planalanatiotion.n. An An C( iC( is an es an e"am"ample ople of a th7f a th7ristristoror..

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Quesestition on NuNummbberer.. 1/.1/. 66hhe te temempeperaratuture re oof a f a pupure re memetatal cl can an ggrereatatl7 l7 afafffecect tt thehe resistance of it. ;hat temperature scale is used).

resistance of it. ;hat temperature scale is used). O

Oppttiioon n AA.. AAbbssoolluuttee.. O

Oppttiioon n BB.. CCeennttiiggrraaddee.. O

Oppttiioon n CC.. aahhrreennhheeiitt.. Co

(23)

!

!"p"plalananatitionon.. N'N'::.. 08. Power.

08. Power.

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Quuesesttiioon Nn Nuummbberer.. 11.. A A 110 & 0 & bbaatttteer7 r7 ssuupppplliies es a ra reesisissttiive ve llooaad od of 1f 10 o0 ohhmms fs foor 1r 1 minute. ;hat is the poer supplied).

minute. ;hat is the poer supplied). O

Oppttiioon n AA.. 11000 0 ;;.. O

Oppttiioon n BB.. 110 0 &&AA.. O

Oppttiioon n CC.. 110 0 ;;.. C

Coorrrreecct t AAnnsseer ir iss.. 110 0 ;;.. !"pla

!"planationnation.. #oer % '#oer % '+( tim+( time is not re9e is not re9uired-uired-. (esist. (esistive load ive load onl7onl7, so an, so anser is in ;ser is in ;attatts.s.

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Quesestition on NuNummbberer.. ++.. A A reresisiststoor dr disissisippatates es 0 ;0 ;aatttts. s. 'f 'f it it rurunns fs foor  r  hohoururs 1s 15 m5 mininuutetes,s, ho much energ7 is dissipated in total).

ho much energ7 is dissipated in total). O Oppttiioon n AA.. ++00..  88<<.. O Oppttiioon n BB.. 11..++++  <<.. O Oppttiioon n CC.. 11>>11..++5 5 <<.. C

Coorrrerect ct AAnnsseer ir is.s. 11..++++  <.<. !"pla

!"planationnation.. !ner!nerg7 % #og7 % #oer 2 6er 2 6ime. 6ime. 6ime mime must be in seust be in secondsconds. 6he. 6here are /0re are /00 secon0 seconds inds in 1 hour  not /0.

1 hour  not /0.

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Quesestition on NuNummbberer.. .. 66hhe ee eararth th lelead ad of of a a + + & & e9e9uiuipmpmenent it is s 00.5 .5 ohohm m reresisiststanance ce anandd carries 0 A. 3o much poer does it dissipate).

carries 0 A. 3o much poer does it dissipate). O Oppttiioon n AA.. 11..>>+ + 88;;.. O Oppttiioon n BB.. 11..1155+ + 88;;.. O Oppttiioon n CC.. ..+ + 88;;.. C

Coorrrerect ct AAnnsseer ir is.s. ..+ + 88;;.. !"pla

!"planationnation.. #oer #oer % '+(. % '+(. ince ince it is an it is an earth leearth lead it iad it ill not ll not have thhave the full +e full +& o& on it, sn it, soo disregard voltage.

disregard voltage.

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Quesestition on NuNummbberer.. .. ;;hahat t is is ththe pe pooeer dr disissisippatated ed in in a a 50500 0 ohohm m reresisiststor or iith th a a AA flo). flo). O Oppttiioon n AA.. ..5 5 88;;.. O Oppttiioon n BB.. 11..5 5 88;;.. O Oppttiioon n CC.. ==550 0 88;;.. C

Coorrrerect ct AAnnsseer ir is.s. ..5 5 88;;.. !"

!"plplananatatioion.n. #o#oeer % 'r % '+(+(..

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Quesestition on NuNummbberer.. 5..5 A A $C $C cicircrcuiuit ct coontntaiainnining a g a tototatal rl resesisistatancnce oe of 1f 1000 0 ohohmms hs has as aa current flo of +50 mA. 6he poer dissipated in the circuit is.

current flo of +50 mA. 6he poer dissipated in the circuit is. O

Oppttiioon n AA.. 00..  aattttss.. O

Oppttiioon n BB.. 5 5 aattttss.. O

Oppttiioon n CC.. //..++5 5 aattttss.. Co

(24)

!"

!"plplananatatioion.n. #o#oeer % 'r % '+(+(..

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Quuesesttiioon n NNuummbberer.. //.. ##ooer er iis s tthhe e rratate e oof f ddooiinng g oorr88. . 't 't iis s mmeaeasusurred ed iinn.. O

Oppttiioon An A.. GGoouulleess**sseeccoonndd.. O

Oppttiioon n BB.. GGoouullees s 2 2 sseeccoonnddss.. O

Oppttiioon n CC.. aattttss**sseeccoonndd.. Co

Corrrrecect At Ansnseer isr is.. GoGouuleles*s*sesecocondnd.. !

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Quesestition on NuNummbberer.. ==.. 66hhe pe pooeer ir in n a ca cirircucuit it hhen en vovoltltagage ae annd d reresisiststanance ce is is ggiviven en cacann be found b7

be found b7.. O

Oppttiioon n AA.. &&22((.. O

Oppttiioon n BB.. &&22&&22((.. O

Oppttiioon n CC.. &&22& & * * ((.. C

Coorrrerect ct AAnnsseer r iis.s. &&22& & * * ((.. !

!"p"plalananatitionon.. ##ooer % er % &&++_*(._*(.

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Quesestition on NuNummbberer.. .. A A 5500 00 ohohm m reresisiststoor cr cararriries es a  a  amamp p cucurrrrenent. t. ;;hhat at is is ththe pe pooeerr dissipated). dissipated). O Oppttiioon n AA.. 55000 0 ;;.. O Oppttiioon n BB.. 5 5 88;;.. O Oppttiioon n CC.. ..5 5 88;;.. C

Coorrrerect ct AAnnsseer ir is.s. ..5 5 88;;.. !

!"p"plalananatitionon.. ##ooer % 'er % '++_(._(.

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Quesestition on NuNummbberer.. >..> A A  o ohm hm reresisiststoor dr disissisippatates es ++= ;= ;aatttts. s. 3o3o m mucuch ch cuurrrrenent ft floloss through it).

through it). O

Oppttiioon n AA.. > > AA.. O

Oppttiioon n BB.. 00..115 5 AA.. O

Oppttiioon n CC..   AA.. C

Coorrrreecct t AAnnsseer r iiss..   AA.. !

!"p"plalananatitionon.. ppooer % 'er % '++_{(. 6ranspose for '.P.}_{(. 6ranspose for '.P.}

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Quesestition on NuNumbmberer.. 1010.. A A vvololt st souourcrce e is is rere9u9uirired ed to to fufurnrnisish h 1>1>+ + aatttts ts to a o a papararallllelel circuit consisting of three resistors of e9ual value. ;hat is the value of each resistor). circuit consisting of three resistors of e9ual value. ;hat is the value of each resistor). O Oppttiioon n AA..   oohhmm.. O Oppttiioon n BB.. / / oohhmm.. O Oppttiioon n CC.. 11+ + oohhmm.. C

Coorrrerect ct AAnnsseer r iis.s. / / oohhmm.. !"pla

!"planationnation.. !ach resi!ach resistor dissistor dissipates 1>+pates 1>+* % / ;* % / ;attatts. &s. &ooltage is the samltage is the same across alle across all resistors in parallel %  &olts. #oer % &s9uared*(. ;or8 out (.