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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 difference between the terminals of a battery, when no cur4jdx;u v2i /mx8kycf+rent flows to an external circuit, is referre dyvx +/mk4iujc8; x2fd 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 differenceeu- hvzq-7, /f ;o3c g8gv5panylvnk . between the terminals of a battery, when current flows to an ext;q-vgn k-v7f p8acnyl,z 3g.he/vo5u ernal circuit, 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 resistorg k3uuo sdx,skt5o51p* 4 km6js 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 connected in s;j+ju; cpk2ism-a rl: .xbpy6eries,

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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 se0-1n,wztzxp 2iso f.wries to a battery. If the current of 12 A flows from the battery, how much current flows thrxzfiw -102ts z, pn.owough 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 battery. W(1p r ,bttcg9h0umk )vhat is the voltage across any one of the reshkvg,c9ur10b (t)mp tistors?

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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 seriestz/ t7i2y3u *bgkn)*o(zyba q to a constant voltage source, the power supplied 37zta/bny 2i *ykgqtou b *)z(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 p4)*6g4:x n.ieg ytb ucjq za*larallel 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 canvxp:xmieb+a38dyr ( s l 1e/n2 be 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 connews 0e,xqx* 5 asg+v-ieu8lb*f cted in parallel to a 12-V battery. What is the voltage of any one of tx8su+egq fbl *i- ew 0x*s5,vahe 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 toyqgbt+u, ,2hl a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistoyu ,,lt2qbh +grs?

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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 Chriszh:6nm5 n:rb ltmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in t:nrz56hbn l:m he wires leading to 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 to a constant voltage source, the poweri;xgsn2h hofc089.gh( 0hs* ibl/nr 3xaq )bb sub2gg 0f0/8ihcn)sa(xn*l.hr ibhqb;x39 hs opplied 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 maxim z+* g4j+j6ry* x jsaotbr8 b1qd.pj14+ ndezpum power each can dissipate i yjp4g1 +r+q6 n4rt ddep abobj+j*j z1sxz.*8s P. Two of the resistors are connected in series, and a third is connected 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 yhjm wq2f +i) 6h pq v9dnk12/36o9wdd0acwtg rule.
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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 ruleclod x3nu2 z 8,*vcc7y.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rulen9ji72ro.5*bp .rmfa4d f cl 5:rmzep is an 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 rule is aa5st5j: xkr 8dn 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 hel (mdu -nuj m5o(xdd5c/l0 6saps)o 4mre is valid for the circuit shown?


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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 stor/ 7m+sbah9u njage batteries together in series ("+" to "-" to "+" to "-"), and ph 9sn/j7ab m+ulace them in a circuit, the combination 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 identical storage batteries together in series ("+" to "-" t wm b,,/mxlf9xo "-" to "+"), and place them in a circuit, the combination will prom/bw,,x fl9 mxvide

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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 parallel, and place0 g(m ndk(t,fwsgw*goiq2s88 t no2q, *8wi(k( f gsd0mtwgg8shem in a circuit, the combination will provide

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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 series to crrmk .r 2r-;/ozeq+miu2s:9hbd u.la 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 sn+.4xd djphj 6v;sp/connected in series, the equivalent capacitance of the c6xs /.p npdhv;+sj4jdombination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to w4r u6kd m2)aia battery. If a total charge of Q flows from the battery, how much charge does each capacitor carrirma)64u2d wk y?

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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 arew o- okr35h6wv 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 parallel, the equivalent capatazuta tw 9 /i.)pj7a uwv4e3/citance of e wpaw/t/tu i)t9 uaz34j.7avthe 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 connecte2c/z; bvm;) ygjfp0iad in parallel to a battery. If a total charge of Q b zgv2 ip;)m/yjc; af0flows 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 the quantitn vw ryly-87uc+k8/h y 9 rukshr2m,y8y 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 in series to an bczezr6f3...w k ec/c ideal battery of constant terminal voltage. At the moment contact ice.kcr/zz6. bf w ce.3s made with 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 tuxe . +y*7rwqko an ideal battery of constant terminal voltage. At the moment contact ixu.7ewyq*+ k rs 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 connected in series to an ideal battym eq/0i 1x :5af1o/3ap x 6zkka9sgr-ez0jniery of constant terminal voltage. Whenkmzai6qj 05 k op eafia0rnzs:/3ex1gx 1y9/- 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 shoqh0)3*dk .,4gf tm*dh3cb/yvyzut x;w 7a exauld

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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 ammeter by the addition of a5u g)(7 9r/:ky uwjb e-q gwvfot8pgl(

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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 propej8+j/of6.:hsuzv elaa+ z j( oy.9whs rly placing an ammeter in a circuit consisting of one resistor and one battery. .aj(z:j v9woe+h.ojly6 fu hz+ss/8a 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 of an ammeter's shunj:isqxn 5ycj+a+ :qm2t 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 voltmet+m f0 ,p ny a/yvae58moh+w+4x lzw;yoer 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 resista(,bnny n0r( n2mei94a bs/) p0:e itivd a6wswnce

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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 vojowh. n sy;+mor2ve 6:ltmeter across a resistor. What happens to the total current flowing in the circuit as a resvws6. mo;j+:o2rhn eyult of 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, az7x8t m rhs33 355qlfvs nod-vnd a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. nmvo38 xq5t3z f-v3rshl 5sd7If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, 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:ntnyo1l c5f, tx*zh/ with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected hn*t/ 1not,y: 5lcf xzto a battery. If one computes the value of the resistance by dividing the 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, and27yehred,2m 4b0jtj v 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,z2 f 6u hskuku.19uk-m 12, 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, 12,4bz0/th gvz;p 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 of a 3.o zpl 4af9,)sp0 $\Omega$ 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 l3( e :e3g;ovnb1 gxu h3hveck1v,ur .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 parallel combinatioj ,zjyliw4jlskqrb ( ,;5k4;5ehg:mc n 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 into a par bwcu*2cz , /dz//iaeyux)d j:allel 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 combinaf7upe bs7ft1w0cf- dpz6azd 5y1r5 ( ltion 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-W exlzmq6; ;p2ytoaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total currenel; p6x;q 2zymt 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 qivvx2: )p9zf-W light bulbs you can connect in parallel in a 12i:9fpvq) vz2x0-V circuit 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 ncbgtr+bl19 2v3z.g l$\Omega$ 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 amey yl-y1t9tm755i( un buh8gnd 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, and4fq ty/sm)x eby1g k*0 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 9.0,vl*z0 uqh0rxd0fa:nd *vfu/ $\Omega$ 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 and 9cd ./p26vh,3 ,h,zksmkm kkc m.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 4pzuv 0os:t)(*yn.kb8bfqc tand 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 resistance of the c0b m9vy5 c+f9*ehdvl bircuit 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 throutlaar616x.9n*fqn p2 b p:xro /wknv,ny,va* gh $R_2$, 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 b11j+ fls4/mz ocweb0of 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, determine the current in the 1 8ej5s 82j8b ck gnaxg1$\Omega$ 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 current inwqxtw(9z(,je- sm5m- j2 ccjf 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 currrx bv3he- dze,pu762qent 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 ina4p kav6.ki,m 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 Fi7tjx.xo :1fnt t48tdkg. 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 point D reb to5 vc-szl+.lative 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 the baanvppp:y+ f2 ::ih h7ht xge(p; f,qx9ttery 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 gy kcc 4h.3 t qcg7:gwm(g6-nwdrop 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 im1 jnp cv135qzn 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 in thopmu/igbzj0+r/w j2 ;r+ g5y re 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 il 8j* ( w*mvq.jdqn78wta6c mln the 4 $\Omega$ 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 1, r hmmdj8c5wb ( t,joliu2(5s2 $\Omega$ 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 dp*; d/zu5d s(j 8k-p/i evrnizjin47 $\Omega$ 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 uppz mck*wv5a o,(www 2.per left and lower left cornerv aw.,mcok *2wp(zw5ws?

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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 conwq.hkmw5;/, zs +npys0d+i. ytdigt +.q(k mv nected in series. The equivalent capacitance of this combinatio /.ty.+.t gvz(mysm+ d0q;phwksidiq, n w5 +kn 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 connected if,3gzqd 3j oj(p1a ;non series across a 12.0-V b p,(a 13g3jdojn qzfo;attery. How much 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 are connected in series asl)tey:2 q:qke+ tba tn1,4fvcross a 12.0-V battery. What is the potential difference across the 10.0-mF fnlqe)s v, ab q :2ty+kt4e:1tcapacitor?

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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 cauo,efp * 41p/hosx3tqoll a 3,pacitor are connected in series across a 3.0-V battery. What is the voltage across thoh4 qolt,p3lx* 1uos pa3/,ef e 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 capacitqcck.5 mkv3 cdp,-b*tn f c9(for are connected in series across a 3.0-V battery. What is c,9ckcd5ct vkf3q.mn- f*p( bthe 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 acrostkinsz.y7)))x v:fio8foeb9 s a 24-V battery. How much energy is stored in this cof:o ins.f8i z9)et y) kvbx7)ombination 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, and ;h ez* hzzc7 :al,;qt9q6x 6ohlc0dljthis pair is then co7;tach qze06l6h j,9* zlczhxold : ;qnnected 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 i1ry4bjat/t76a ho kug:h u-+un parallel. The combination is then connected in series w-46jt:uurbu/h 7tyhoak g1 a+ith a 12.0-V battery and a 14.0-mF capacitor. What is the 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 and 8.00 mF are con p-q(0mmg5u56 -k kqrsy7 zijnnected in parallel. The combination is then connected 06ukyqi(r m-55 snqz-k7pmjgin 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 mF are connected in parallel.36wvs pvhq58 b The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitobhq 856 v3spvwr?

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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 i4 r421d)nw 7:ybhyh,gj kjnqcs charged 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 through a8nek45l z(f bc5 evz0k10 rgah $4.0 \times 10^{6} \; \Omega$ 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 0df.w+te 9n zk5ypy l/4:aq. yk.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the cyd4. et+/kykn q a:f9 wz5l.yphange 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 6.0-V. It isz7p;c9 (mfyct then connected in series with a 37;yct f zp9c(m.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 resistance1g j+u y4* rh j+;r69nylkjbpp 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 (ew1sf3mx w)62uaxrm24.0 $\Omega$. 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 resistance ofvti8/m(u8fyca,/y;w 3h1f tm wry 9wer2c,du 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#
 
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  A galvanometer with a coil /5pnsxp ytu(j:2..lusvk -gn 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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