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习题练习：Physics Unit19: DC Circuits
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 作者: admin  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential differenceh6a 3o.f bju0nw,4a 0ip5 6dm,sbxhcv between the terminals of a battery, when no current flows to an external circux.chmbj 4hs bi5pw o ,36av,0a d60fnuit, is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battb/4x ,fi-gk sjery, when current flows to an external circuit, is referrej ,4fx/b- gsikd to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resis toe0:*m+i(o m tst0rutors are connected in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connecte*)fk2yeps v;/+ 4o jq*d0 tyzm5kasdud in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistod)vk7d2as/ui)*w .uwo3u zqv rs are connected in series to a battery. If the current of 12 A fqd 2vuu.w 7ovid)wu3s*z/k )alows from the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 1zp0n 4 9iczmcfz9 r+m,2-V battery. What is the fn 9,miczcz 0z+4rp9m voltage across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, the power su2*fz 8:parw6rnpr 5*zy- va cq+8pc jupplied by the u2+8 rrnzp 6-*w*vyaq5cp az f:pcr8jsource

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in n2i47)ekqc g jwubk+) 0ihi3kparallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we can d tkf2t841j1a zu+occbe certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 1aijfb8v s ;y- n6cvy22dnhh+ecjwb/qu ( 8-,k2-V battery. What is the+ 8(yb8fkc- 6,qy;h2- s2wnejciv ua /hnvbdj voltage of any one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistode,+y 2lc hm5c wmqgcn l*4k /87lg(b gfhl)v,rs are connected in parallel to a battery. If the current of 12 A flowb fcdemcc /y) llnw7*l(2q l5mvkg ,4hg h+g8,s from the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas treeqy)(d 8g,amyd0yrbn , vi a,/v lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading tona(/vvigray)m8db q ,0,,dyy the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel t, 6ehw e9kt rfr xlzz8x1,dc2;o a constant voltage source, the power supplielc92z f8e,, dexh xwr1t6;zr kd by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maxi20r osc:8irdw3 *gfdk i a0m7zmum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in 0*r0k 82oiza3 gsfc:dd r7 iwmparallel with these two. What is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junction rul 0aatf :+cb+ice.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loop ru6 j(i7*3xso4ki 9ksook,g idule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an exam en fm0k)kzkq5 a,c;h,ple of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an exam 5kejr axs:aoi/ .g*q9ple of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valid for the circuit shown?8ocfd1o:2 ;kouox: nf qzg/*e


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" to* *cnxkyn 8bo0 5d3 1f8 g7zvwe6wnfsst4te0 m "-" to "+" to "-"), and place them in a circuit, the combinatio8gdn m*tknzety63c8 o0* efx1f7ww s05vn 4sbn will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identi tv +c.ykrlmh l8x7-3dcal storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provid 8l dxmvl7tc+hykr3.- e

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in paralleljp* npo /9 )tzszu*v4q .s9cvw, and place them in a circuit, the combination will pro/vn jvoz*wpq z9su .)4p9ct *svide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in fq4q w3ow e/+eseries to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in series, the equivalent capacitancuo:) 1s4wagg re of the combsr4a1u: go)gwination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacit7uj* mo-)v kh4 dccp8gors are connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each pv8k)o 7gc4-*d muc jhcapacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are-9nxj s:f hvw8 connected in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capaci:lro(pq np7pm t;nq(p ,u5p/ ntors are connected in parallel, the equivalent capacitance of thep 5no nqu;lt( mr:7n(/,ppqp p combination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are confu j 1qq*kxr4y6+g a5nnected in parallel to a battery. If a total charge of Q flows from the battery, how much chargy6n1 +kxagrjq*q 4 fu5e does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quantity RC?n. r1/rba(.dt ;wk kb:dpoz w-xt-uq/

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery oh x*l j5 kdw854gvp5f/ayh.dbf constant terminal voltage. At the moment contact is made with the v4g 8bkhpd/y w.dhal 5j*5x 5fbattery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to ankbtk,o; bk+4c)7 svhf ideal battery of constant terminal voltage. At the moment contact is made with thek,sfovht+c;kk 47)bb battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series)7 sdz8bw9h-ve) bj lj to an ideal battery of constant terminal voltage. When this system reaches its steadv9bwjh7z)s b ) l-dej8y-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoum2p cy je1nwlj67gs1ukbu2oi4 (9ln7 ld

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be converted to an awdc+f .5/xheo)ag( dn mmeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtainedkp;xv,u*3 +8mln ejl y by properly placing an ammeter in a circuit consisting of one resis kx,8*mlluyv e3j+ ;nptor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance,ewgh9+ce/ packma m0 o );9lzd d5kdou5p 0w( of an ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a v atw dymv eq-0347cug.exb )8foltmeter from a galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series resistantbz37-yrqeifyl zqc423ts* )ce

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a vo+g ca27. gxjhpho3vg/f +. eijltmeter across a resistor. What happens to the total current flowing in the circuit as a result of ep7ch /+j3hg+2avg. jgif o.x this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, ana*/zpc/7 kx apt cf4-md a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reappa/*7f4 -c tac/kxmzding, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter,*.iyi 5nz6* fxljh+ :vhjnf 8x and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing t6nz :*ji5f8y.vn hfxx*ji hl+he voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, anm6l,g,wvjq/io gotzo4 k-* 5 md 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, cz 2ymx9ivdo 56659xv ;r0icrbl/ zyj and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 1tsiq,o. /r*8s3ara v;z y5kwso+sm7x 2, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination o3 tjs7w1dxzaiz,bb f); hh0/ of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series c,eb8 k7om i7nuombination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a +d76nvx s yujxs9v85y parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows intow8v)wk4h 5rq x a parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel co xoi6f,ua* d 70lyc-ummbination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-Wksg8ezmz2 m q90zm3o3 toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what t omz mzqe0k3s3 2z9g8motal current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulx l pfgr06cvqqetanr s:6;32+bs you can connect in parallel in a 120-V qfgltcea v; pnx+6r r0:q32s 6circuit without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 k4yqq wcf h xxl)mpdx-1h6*2 57ve1qg$\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 and f b71g( i4qa zajghpcx 04:ot pl.f 0(kiv,;ny30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, anm1rq /8+fbu ,qiocp0wd 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9ll (c s5op u1ru9:/ cfnmbzw;2.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 +/4eu8 nf gqkdp 7i icer.c(u1and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and nx )7qtuov (p/fk ab)69.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance ofq x*pf(/k/hi(e0gpy1b dd c+p akvy:: the circuit in Fig. 19-2?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows througsz qg)vj/s(xe a3l (3uh $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance* e.txc6y7vhfjn :bbqs:/d / v of the circuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, deterj +lj9llo)t. l4 a8lnbmine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. wa x2,cag /;9qb(hvrh19-4, determine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current ;(r oz0jnn k38hs 6,zoo j4/ls)uc qavin the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential ofq(t2 j)bk) skac9l3nbq20dzgl5zy r2 point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in u4:ts ywmh8cv2m*r 7b Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potentialsq87 l 7qkyiyvhj;8z;4ol 994wb koxm of point D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows fropxt-7nq wkuf m3(,k(ukjg13hm the battery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential droty;,9gmf3 (i d1btoukwjxg 9/ p from point A to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current cub, :zg 6xigwi2/1rhhz c2t6in the 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current inj7 )yr ky :sr7x-4vmdx the 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the a6ndsub9;8vu4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the fkkg2k)12 wi*jd-b0:jro owrr3qk i412 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 18 l+qq33aj 2gcl(,vl 1ryvs* mw$\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connectingz8 yow 6p2;mu*.ox4 6dme wnxt the upper left and lower left corners?.xe8oz6 * t4muy xno2wpdm ;w6

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are connected in series. The equivalent capacitan(knmffec3y ( (iq/ z-l(uoib 4ce of this combination is/f(iemyc4 z o3n (qkflu(-bi(

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are conneci: fkl)8mtd0tted in series across a 12.0-V battery. How much charge is stored in the 5.00-mF capacmitkd:0f8 )ltitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitorw m8/oj*r j5sgs are connected in series across a 12.0-V battery. Whatm/*5 jo sgw8jr is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connex s,v k/0aewq.cted in series across a 3.0-V battery. What is the volkw xsaq 0e,/.vtage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mFoy-:n7z:rhvtf luorbig9 b1eri-79h-4( d dz capacitor are connected in series across a 3.0-V battery. What is the vnuod:- (9 7t4 lb-7eirbro z:zg-i1hvhf dr y9oltage across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in parallel across a 24)thx2f(e ;nmzy7c.5vme se7 d-V battery. How much energy is stored in this combe.(td f;nse7m27z vymex5)c hination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF *1l uy*ywfcm.ev9,uj and 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What i9* *yc,w uv.1feumjyls the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.kzeher6z9 (: v00 mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the ekh9(zzr: e6v equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF a;a yo/us 2jv42zckd1k nd 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the chargeckj2 uz v/d4koay;1 2s on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. +-+5;9te0aur 6ahcw p d6jo+ vxs ilrsThe combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage +as;0r6ou ih c6x++esap-vl59jtwdr across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is bz3a ,dh: (lpccharged through a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged to 12 V and then discharged t6/gt76uz pa bond9 w2o;:r vbgq56wa zhrough a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. T* h4 cx4nkxst*he capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltan4cxhx** s k4tge between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in series wzjk9 r m+k)r* 8hre:ers2rw- rith a 3* 2 kr:)ehrrker8rrsm +j-9zw.0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resisyl,d)oy o mf.*q /o6dbtance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resistance of 24.0(6q x*h rcn2(wwz4kxz $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resi4qkre9qe zcfw. (. 0zxstance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil rp3cc4wq(cg:f:v,ps1i jl; t.dliy- u esistance of 40.0 $\Omega$ deflects full scale for a current of 2.0 mA. What series resistance should be used with this galvanometer in order to construct a voltmeter that deflects full scale for 50 V?

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