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习题练习：Physics Unit19: DC Circuits
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 77 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://tiku.one/test77.html
 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 difference between the termina/g rtc)d;7-cx;q6qetzk :/r c.m3* f bzatv vyls of a battery, when no current flows to7 x) qb:gt6r3vqf c av *.zcr;/mtkc/ed-y;zt an external circuit, 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 bek9 kanlbx 5mmxownf9 /-j/8,otween the terminals of a battery, when current flows to an external ci,/8xo/nx-ol kfjna5w9mm 9bkrcuit, is referred 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 resistors are connected in series to a bade6) vz:) axdettery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in seri-8;f4 ckkghwh rf ;n7xes,

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5#
 
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 battery. If the current jjk kk 82/,bhgqwx:2g of 12 A flows from the battery, how much curren28h ,jjgkg:q2w/k x bkt 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 12-V batt,:qr,f*plt nfw: f k2yery. What is the vor :w tl:, n2,fffpk*yqltage 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 sourttbc1dpx 8/r/73m-g*ioky- ml. cwahce, the power supplied axm *1y7-wotgp3lrkb./hc-idm8 t/c by the source

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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 parallel nc/b *67*bh tkd.npgvto 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 be certainkw-iiy84 v.f w 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 paralwkeh/r y 33f5ylel to a 12-V battery. What is thehy3rywk e5 f/3 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 resistors are connected in parallel to a battery. *i9xic v1e y1c rl/.aba+;ibw If the current of 12 A flows from the battery, how m;.iar/x ia1 b vb ceiyw9l1c*+uch 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 tree lig 8jk2huze 3/ih x8i;a*z1uz7+flctwi hts are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)3 ii2* +x8k z8tz1hh ;ueuilzw/fcj7a

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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 to a constant voltage s:8y ux:*ik7wgbik;0iea/x xkource, the power supplied by the sox*bxk k keaw:x0ii78i;ygu/: urce

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identicalu no7;;: gwgln resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is g ng7u:l wn;;oconnected in parallel 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 rulrff69is 02bsw yi3c,2lcd5 qti2y /gts + pd0le.
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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 ru35e)zrc0 tbz/ jjg mh3w9+djz oxy*r .le.
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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 anp iea6 ,be3a9x4b.nmv example 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 runye8rx 9.lfno53m 34o. qb s-p)ztjpole is an example 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 sho uwby(tq* 3za;9p u:vfwn?


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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 batter kvqf bbfy:s5q 0lrgmui13 -((j/kj0qies together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will proviys fqmkb/ qjgr:01jkluq5fvi(3b(- 0 de

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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 identical storage batteries together in series ("+" to "-" 6kac zm84yew3jc 0/ii to "-" to "+"), and place them in a circuit, the coz/8 6ij3 kiayc wmec04mbination will provide

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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 ident-yxyl0mk 8:gep il 1z9ical storage batteries together in parallel, and place them in a circuit, the combination will providge y81-0imzk: lypl x9e

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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 capaz jbmd+79e p yf);7dbycitors are connected in series 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 equ6 ,an1wofyf)pnfu m,mrlx 78(m /v 9vxivalent capacitance of tm6a1f,o( fnx,p v y m7xmv9rn/wlu) f8he combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capac fo.ytvcp +n*uegd1.9(p4 sf witors are connected in series to a battery. If a total charg+gd.fc*n f4yep 1ws( vtuo.9 pe of Q flows from the battery, how much charge does each capacitor 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 capa 5s 8+pyamm skh2d2tqes 0;qc1citors are 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 capacitors are connected in rmz(*zx4noa4vb1a5,fm l-l a wtd6+iparallel, the equivalent capacitance of the combination incre6 m(-r4xtzbil4*lamafv dwa15+onz,ases.

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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 connected in parallel to a battery. s-tq9rd *n2,n x bizj/ If a total chargeqzin*j-rn/9 s dx2bt, of Q flows from the battery, how much charge 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 f b,f. ;)nvqzox:5,fwo mho1 mthe quantity RC?

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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 ii/is (7qk: cq+)qn cd3jb+ptzn series to an ideal battery of constant terminal voltage. At the moment contact is made 3k sibn/zc i7+ q(qqtdcp):+jwith the battery, 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 an ideal batterykmz.1 tf+c xi.oc9q ;ugl.e;m f;8nxh of constant terminal voltage. At the moment contagu m.+k;tixxmo; lzf1e8; .hqn 9 .ccfct is made with the 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 cl r)+dk69a qd tzzt/ 5*mvk;jwonnected in series to an ideal battery of constant terminal voltage. Whenklj6z *;5w rqdttvk am)z/ d+9 this system reaches its steady-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 should hmrxl;gtm8c(zi3 22j

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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 ammeter8npl2s**w 24 fpfq1i uo6fv 0ipn68 n1jchswd 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 obtained by pris t-y3ngs/sn;au2fksw d99n.t 7w 1s operly placing an ammeter in a circuit consisting of one resistor and one battery. As a iw wsus; ydtn-fs3n g. 9 ka/9t7s1ns2result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammet0 m0hf:5 zawml5d7zud7 ;kjls+ hiug6 er'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 voltmeter from a rjm8lj2- on:* lds r:kgalvanometer, 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 resisthedjk/m y*4x:o. tvs6 (g83zrs0mk1 gtdsmm( ance of a voltmeter's series resistance

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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 voltmeter acsv0y c+8 oz0ssross a resistor. What happens to the total current flowing in the circuit as a result of this act s+ czvs0y8os0ion?

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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 serafj* *rn7so 4w)i;sc dies with an ammeter, and 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 readin*;crfws )ns*ajod 47 ig, 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 r59mfu4.5,k hsb5wos3tnbaj with an ammeter, 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 the voltmeter reading by the ammeter re.w9osjs4hbtu,fan 3mkr5 55 b ading, 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,(unooee g(wq o 3 ge.l-a:4y0ngz1 0r*hnk8wu and 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, and 6.vbvmbf83)u 8x0 $\Omega$ 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, 12, and 6.0iyb-;pk o -nyn055zgg $\Omega$ 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 co cbdyttep -zl+7k6np czf;y :4d4/ll5mbination 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 rz;42 bom73cs bbuo5nseries combination 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 parall m w71mdw16l9ac fuatll:hg yayx, 7)0el 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 flows3h4(7ca n+c:h7l lsye7zkqt m into 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 combination k twp*y5z dwv b)-mm.zc8rru77 3p;vkof 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 tlkwp3anq9t6g ngbd :;uvibts) c.5)) 11zgulo a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total clt pl6:izkgq )cb) u; uns)vg51t d.93w1 ganburrent 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 bulbs you can connect in par;w-yghab7 o* wallel in a 120-V circuit withobg* y;w7- wahout 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 j jqg(5ix2 g2b$\Omega$ 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 anxxy7tqvn8.t (w 5+c e zomt.t-d 30 $\Omega$ 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, and 1z-qfj(x d8 . qs/tav-g0.0 $\Omega$ 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/ 6ftbj xy0qw. and 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 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 5.0l9s a3nc ht6(p3nh9kt and 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 5.0h wn)hl:wo s.w7 qeh/*zw/u r8 and 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 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 resistanc- o+3-:4k n8ux prlrohh/ivw pe of 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 througyosps7sg1bq .y ( i)0kh $R_2$, 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 of phw+nb-e2 /kjt2(uk 8hdy 3 j:kccn5wthe 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, determine the cur10p)fm v wcyq1n68jprwq:8 7:wcok7 o7pqz el rent 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. 19-4, determine the curre7bbjijo 2k 1c(bt 3b;e7tuy4unt 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, 1jb 84sxyx:aojzyw 5, determine the current in 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 of point A relative to point C in Fig. 26fj.a x)xp rp19-5?


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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 poinm ; d7iegx36hnt C in 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 potential of poin--q x( wq6xtdat 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 from 3qa lpf.u6u8i.u twr6the 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 drop from point A to point B in Fig. 19-eo:qi+s: b*p g5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 7 uvv;sgg;lv2vp 7( y3 w$\Omega$ 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 in the hgn), ,h( fesy8 $\Omega$ 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 4 ayn/xctlruz0ib b 0dx5z2 jb /41.ro;$\Omega$ 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 12 lv,8 bkli g56y$\Omega$ 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+9sfoxp c br0+ 18 $\Omega$ 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 connecting the upfmur.h7-g dh ; qpn+5zper left and lower left co qr7 md-z;uhh5.ng+p frners?

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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 capaciod7w:3k1 lwb mtance of this combinationobm 7d1w lw3:k is

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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 eap5 itc0*f 8..sc(jx2-liswps uhz1( amzk0connected in series across a 12.0-V battery. How muc a *u(tz15 ewp0kmh.al(i2-.f8sixspj c0zsch charge is stored in the 5.00-mF capacitor?

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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 capacitors u6m /3od.zztnb8 6u mxltl-u,are connected in series across a 12.0-V battery. What is the potential difference across the 10.0 xdlntbmuu.zuo8t66 -lz m/3,-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 capacitor6nvgb1l5.dj oh)h j;oh31s vc are connected in series across a 3.0-V battery. What i1o dbsj;jv )1n oh.v63chg5hls the voltage 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-mF capacitor are connected in serioaqfmhfs 4p8ba7 (8y v v9r,:npm,(cres across a 3.0-V battery. What is fc:mp(s,hmq8v r48pfa7a y(b,rv o9n the voltage 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-V b m+*hzirho(hrrv3 2l ;attery. How much energyh oh+3;r( *rlhr2mzvi is stored in this combination 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 and 20 mF are connected in parallel z l)wvwsopax r-n08o-,b -lo(, and this pair is then c v a8lwnl(s,pbx-r--o w o)0zoonnected in series with a 30-mF capacitor. What is 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 6.00 mF and 8.00 mF are connected in pat6 d0 6ql8 cu9te;rslyrallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent cap6y8;tu9 ds6rl 0qletc acitance?

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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 and 8.00 m)/iemmjo6 *b +y5y2h iosjei,F are connected in parallel. The combination is theno)ehb*ji o,/ym +eji5msi26y connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge 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 -hwq-w6c3tzw 5w fxz /mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capaciz /6w-5 wf3c- zthxqwwtor. What is the voltage 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 charsng0e5, yi1 f8esx kbx2oc9- yged 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 througj2t+rz1ook.g 3nw idjay g8ph(/ ds6 .h 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.giwcom:kl r7 p.e1:i.m/ xy)i The capacitor is initially uncharged. The RC comb/yc1mr: l g.)ixe w. mpikoi:7ination is charged by a 9.0-V battery. What is the change in voltage 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.,+2x rdr v7gwu0-V. It is then connected in series with a 3.0 7wx+rg,dvr2u $M\Omega$ 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 resistav 8:ug,3oh+ dai2,y(avueg pfnce 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(f li*j)q:6rq v gisl3c( hj.z $\Omega$. 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 iqk k :hjtz/ma moi8/c34 9dn4snternal resistance 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 w5/agg ,.idc u jzt1.fcoil resistance 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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    总分:102分 及格:61.2分 时间:不限时
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