Test Bank For Physics of Everyday Phenomena, 10th Edition All Chapters - 9781260718935.pdf

Test Bank for Physics Principles wi
h h h h h




th Applications ((10))
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Physics:h Principlesh withh Applications,h Sixthh Edition



25) Ifhthehcurrenthflowinghthroughhahcircuithofhconstanthresistancehishdoubled,hthehpowerhdissipate
dhbyhthathcircuithwill
A) quadruple.
B) double.
C) decreasehtohonehhalf.
D) decreasehtohonehfourth.
Answer:h A
Diff:h 1 PagehRef:hSec.h18.5-18.6


26) Duringhahpowerhdemand,hthehvoltagehoutputhishreducedhbyh5.0%.h Byhwhathpercentagehishth
ehpowerhonhahresistorhaffected?
A) 2.5%hless
B) 5.0%hless
C) 10%hless
D) 90%hless
Answer:h C
Diff:h 2 PagehRef:hSec.h18.5-18.6


27) Ahcurrenththathishsinusoidalhwithhrespecthtohtimehishreferredhtohas
A) ahdirecthcurrent.
B) anhalternatinghcurrent.
Answer:h B
Diff:h 1 PagehRef:hSec.h18.7


28) Considerhtwohcopperhwiresheachhcarryinghahcurrenthofh3.0hA.h Onehwirehhashtwicehthehdiamete
rhofhthehother.h Thehratiohofhthehdrifthvelocityhinhthehsmallerhdiameterhwirehtohthathinhthehlarge
rhdiameterhwirehis
A) 4:1.
B) 2:1.
C) 1:2.
D) 1:4.
Answer:h A
Diff:h 2 PagehRef:hSec.h18.8


29) Materialshinhwhichhthehresistivityhbecomeshessentiallyhzerohathveryhlowhtemperatureshar
ehreferredhtohas
A) conductors.
B) insulators.
C) semiconductors.
D) superconductors.
Answer:h D
Diff:h 1 PagehRef:hSec.h18.9



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Chapterh18:h ElectrichCurrents



QuantitativehProblems

1) Whath currenth ish flowingh ifh 0.67h Ch ofh chargeh passh ah pointh inh 0.30h s?
A) 2.2hA
B) 0.67hA
C) 0.30hA
D) 0.20hA
Answer:h A
Diff:h 1 PagehRef:hSec.h18.1


2) Ahchargehofh12hChpasseshthroughhanhelectroplatinghapparatushinh2.0hmin.h Whathishthehaverag
ehcurrent?
A) 0.10hA
B) 0.60hA
C) 1.0hA
D) 6.0hA
Answer:h A
Diff:h 1 PagehRef:hSec.h18.2


3) Howhmuchhchargehmusthpasshbyhahpointhinh 10hshforhthehcurrenthtohbeh 0.50h A?
A) 20hC
B) 2.0hC
C) 5.0hC
D) 0.050hC
Answer:h C
Diff:h 1 PagehRef:hSec.h18.2


4) Ahtotalhofh2.0h˛h1013hprotonshpasshahgivenhpointhinh15hs.h Whathishthehcurrent?
A) 1.3hmA
B) 1.3hA
C) 0.21hmA
D) 3.2h mA
Answer:h C
Diff:h 2 PagehRef:hSec.h18.2


5) Whath currenth ish flowingh ifh 4.0h ˛h1016h electronsh passh ah pointh inh 0.50h s?
A) 0.013hA
B) 0.31hA
C) 6.3hA
D) 78hA
Answer:h A
Diff:h 2 PagehRef:hSec.h18.2


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Physics:h Principlesh withh Applications,h Sixthh Edition



6) Ifh3.0h˛h1015helectronshflowhthroughhahsectionhofhahwirehofhdiameterh2.0hmmhinh4.0hs,hwhathish
thehcurrenthinhthehwire?
A) 0.12hmA
B) 0.24hmA
C) 7.5h˛h107hA
D) 7.5h˛h1014hA
Answer:h A
Diff:h 2 PagehRef:hSec.h18.2


7) Ahcoffeehmaker,hwhichhdrawsh13.5hAhofhcurrent,hhashbeenhlefthonhforh10hmin.h Whathishthehn
ethnumberhofhelectronshthathhavehpassedhthroughhthehcoffeehmaker?
A) 1.5h ˛h1022
B) 5.1h ˛h1022
C) 1.8h ˛h103
D) 8.1h ˛h103
Answer:h B
Diff:h 2 PagehRef:hSec.h18.2


8) Inhanhelectroplatinghprocess,hithishdesiredhtohdeposith40hmghofhsilverhonhahmetalhparthbyhusing
hahcurrenthofh2.0hA.h How hlonghmusththehcurrent hbehallowedhtohrunhtohdeposit hthishmuchhsilve

r?h(Thehsilverhionsharehsinglyhcharged,handhthehatomichweighthofhsilverhish108.)
A) 16hs
B) 18hs
C) 20hs
D) 22hs
Answer:h B
Diff:h 2 PagehRef:hSec.h18.2


9) Whathpotentialhdifferencehishrequiredhtohcauseh4.00hAhtohflowhthroughhahresistancehofh330hW?
A) 12.1hV
B) 82.5hV
C) 334hV
D) 1320hV
Answer:h D
Diff:h 1 PagehRef:hSec.h18.3




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