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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 differencl+ fifg:w 7jt(-sr0 s0tj:gii e between the terminals of a battery, when no current flows to an exti0:rsfjw-(s figtt0i jg+:7l ernal 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 between the terminals of a battery 7tbn1k 4 pf l7aic6,vfe,wdn*, when current flows to an external f*ev1 wb ,4 l6p,7it7dkcfnn acircuit, 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 serie9htp++c+gd h8gf l7rzk98v d xs 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 connecteb8*xp v.i)sbp d 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 resistors are connected in series to a battery. If -; bs:cm+w8)gjtjg9y yh3o0bnkf 0 mdthe current of 12 A flows from the battery, how much current flows through;3c w8my: ngf hmtydo jb-kb0 g9)+0js 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 conhdaen.c 5-4 crnected in series to a 12-V battery. What is the voltage across any one of theca4r cendh-5. 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 volyxtei2+7uce1 tage source, the power supplied by the sourcexi ucy12+e 7te

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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 paralap pk/pp8 6j1w7l;mpj lel 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 c/duk6r h3 vc 9 ept5twyi.vs41onnected in parallel, we can 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 connected in parallel to a 12-V batteryeh/d 6jvb--r x. What is the vox- d6/b-vrej hltage 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 conne*hh*3epr/ zs 6oqqoe5 eo v:j98tze4pcted in parallel to a battery. If the current of 12 A flows from the battery, how much eq69o84qtep*pv /3e5oo szj :*ezhhr 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 lights are connected in parallel. rhv* /jd*jj4 s What happens if one lamp burns out? (Assume negligible resistance in the wiresvds/ *4jjj*rh 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 conston5x3b ez;5m *o) jgrq:zkc)ru .-wob ant voltage source, the power supplied by thw)g3ocjrxm-: )*; bznko5e .5uqrbo ze 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 maximum power eak;y5uv d mayd8 mdw* nofmi;t8inyqd 2*k8-:.ch can dissipate is 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 5fdyytn*2;viik8o 8a mm -.mwqy* ;:kn dddu8network 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 juncti2hhi fwd67n 6gon 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 rule. +u,b i-ua4b-o51m hk bfglj-s
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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 i(5bb hiqb 8m y;qaivi22p ft:3s 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)w14ub *mjg -3bkwfjb rule 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 validlo 5n3(:uu:v4w czh fv 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 storage batteries together in seri)9v 6mec 9fu)l:8qnpj fh8y ufes ("+" to "-" to "+" to "-"), and place them in a cin)6)ump8y vh9uc: lff 8qe9j frcuit, 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 identgcn+4kh x;dc9ical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will p;h4dncg+9 c xkrovide

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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 identicalbkk e lz3.q1,fzk rmx*uj53c2 storage batteries together in parallel, and place them in a circuit, the combination will providr1m*. kqb x e3k k,32c5lzfzuje

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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 ar . ngozv)s )*64nyyv.uho :evde 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 equi8 )zfwfk,+ qiuvalent capacitance of the combi,+ fiufqkwz )8nation 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 semu7egx ;t+2dlries to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry?;+2dt7 uxl mge

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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 connected in parap-d ypvwm 82m1 i(;,aqqsm8npllel 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 cap miundw7u;e( / f)if+eacitance of the combination increases.imu/;f diw u+fe)n( 7e

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors armqupk (nt (fl1zmi/)-wk 1 ,y6jnzuq2e connected in parallel to a battery. If a total charge of Q flows from the battery, how mucym(1f)u1- iutq/n,z q6 m(j2pzlkk nwh 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 qdhg*unrybb+mj5 z 68 zo;m9 f:uantity 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 ideal battery oa7 jbbm oe7uz gg:o)h)b; p7a;f constant terminal voltage. At the moment contact is made with the battery, the voltaggp;goa ob77b;)zj: bu7me ) hae 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 capaybo8 q ;fqvfn) zebq bw;f:(9.zuj-8illqq/*citor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the v :bqi-bn*8olz;fqyqqzu(l ;f9bw qv./)j e8foltage 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 se)x eum;rk u)x2ries to an ideal battery of constant terminal voltage. When this system reacurmk))ex x;2uhes 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 shoulrpnqus /;j*e/kc se +ijm8 77tm.gqc3d

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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 co8j0mqzn l4q +qe7a.f wnverted to an ammeter 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 properlydin j /go7:1wh placing an ammeter in a circuit consisting of one resistor and one batj dg :win/1oh7tery. 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 shunt resistance4 ) 1xg:.3auv jk,ii*jl5vdc6btrmky

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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 gar : t7zt:*mksf/e1eo20g -lzh,e7xr baqj6dhlvanometer, 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 serfoj9s6yj 7 +q8 f z;tvoi0vgfq*,ri7gu9*i nmies 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 voltmet; 3qctn e+3aytm bv3u2er across a resistor. What happens to the total current flowing in the circuit as a result of t3cn+t3 evm;3a2bu qythis 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 seriess+3g5r ahmopmf --.hu with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network -mp osa 3fg5hhur- .m+is then placed across 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in (9gqie-agdyhc 1+ ,psseries 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 readd+ys i,q 1( ahg-cp9eging 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 5. dy ret(vscq0d2qy/kp /tw-, 3.0, 5.0, 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, 1bhsv*nd5k06z z x;na 92, 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 12ag u zu;t/eic7fy* 6c,, 12, 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 9geecac2kn1l-+oq 0 vetl3 dtzh3f*t g0p84i series combination 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 combination o;bw8/weyg :uyj ntf; rz/va5,f 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 combinatiou8s 340:z -pmr2z ;fsurtz-lmya.gvn l 9t4uyn 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 paralle5a9 sm n/4cwhwbuc 873xnpph9 l 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 combinavlq0s rc *7se 4gmerpolk6mqz -7/+o ;tion 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 toastf x1*ur m-y7dyer, 650-W coffee pot, and 600-W micx drf ym-1y*7urowave. If all were operated at the same time what total 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 d4e4c9e );d:ekp zzo blight bulbs you can connect in parallel in a 120-V circuit withou bzdcekde:z9o;e4) p 4t 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 vt/y8rzwkv0+z/ qogu n 9k(t5$\Omega$ 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 3(tjz5mxv 5s8 s, pcjr.x nu-e00 $\Omega$ 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.;lsd,z6fhl pl; x+hj, 6.0, and 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 9f 7+vf o3 +yqcv0gbffo 2n4qu4.0 $\Omega$ 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 and 9.0 .f9ur6, qbl hy$\Omega$ 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 9.0 xw5q2 lu+ 9elycgg)iybfm-522syj/b$\Omega$ 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 re62rd ccf2s9lp u bu04y7lwk /z.wdx9u sistance 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 througy cav/6/ chlb6n5 tsb)+(vv djh $R_2$, 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 resis ec eo w8-)z(1px0bmdqtance 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, determine the current in the a cpjoy(n+:; es n*a1o-fvc 38qi.qq o1 $\Omega$ 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 curry k .2,o,uuyflent 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, defoep ne805 m m0uo)o*mtermine 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 relativmp9 ,t(hq nq m7 jyb1u:k;3ghync6qd:e 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 point1/ettr/h oq 0afvan (9 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 point ,es x,cq5uy*dD 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 t vwe54 y.j bjlxkei h of/,)7j)d:ger;he 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 dc4n1q; dj ze*kkx0 4qsrop 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 in the 7qkf: k5e)cya. $\Omega$ 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 8 u :q2rm1yz ;lr6 gzns0zgu0a+$\Omega$ 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 n zm z48 km/*o4zmx(oj-k1tih in 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 trqbzc 490i*z6a)ur m+ ) cdlxia1:qyjhe 12 $\Omega$ 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 18ujca180 xh1b(lces /u $\Omega$ 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 upper left and lower le5:h op(asns:lft conps:5a:s hl(orners?

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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 1nnb e+xrjdi(: owl+c0 oc)fi 56g* .cuswns-in series. The equivalent capacitance of this combinaiceosx50-ln c. +s g:wdruwb1 6n()jn c* fi+otion 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 inxt+inx5z)k o- series across a 12.0-V battery. How much charge is s+zknotx5 )xi -tored 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 seriesno7 9qmm5tzdxcds/f)( .,oio across a 12.0-V battery. W c mizs noto(/o)q md9f,7.xd5hat 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 connected in series across a 3.0-V battery. 7 00yyd3 b qnlz:e* 4)ucxol sb7mxdz*b+q4vn What is thesl47+czb3dnx*bqxd:0uebq vzy70 m4 oly )n * 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 cax-dn(jvv0: aq b56ryk pacitor are connected in series across a 3.0-V battery. What is the voltagydvq06(vr: -bakn j 5xe 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 baykey q- 9js )0vab7t,9*hc hhsttery. How much energy is stored in this combination when the capacitors are fully 9sc,0jykh)s- qteh7ha9*by v 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 conqjw, ir.2e w:e78 ;j sjo lmyhqnr98/nnected in parallel, and this pair is then connected in series with a 30-mF capacito8r.o 9m8weyqrw qn ; njj,2hles/7 :jir. 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 ar,momvwa-p:-9zsi5, ,e9 rbch tdehf. e connected in parallel. The combination is then connected in series with a 12.0-V batteridczw- 5h:,, ,a-bpmo v. hee9rsm9f ty 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 connected in parallel.x 0xpcsrvi0+o6n .8oa The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6c.v x nxoopir+06s 8a0.00-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. The1 vp92w ew(awo combination is then connected in series with a 12.0-V battery andpov ewa(w 9w21 a 14.0-mF capacitor. 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 chargru 3rwqcr p ;u o/xq.fn;+5hf3ed 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 thfy(,i kx wte3d3m/um 8en discharged through 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 0jbc7,n)v* (y3 c cqfcg.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in volta)7y cncc(,cv 3*gbjf qge 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 tu:y o* w4ew t +p.)-d7elqxrp5y*afmio 6.0-V. It is then connected in series with a 3o5dy m+f).ew:4*q pwt e-ly7u aipx*r.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 intern2vgjcb 7wa.c,+ rj:ilfbb3/ nal 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 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 resistaj/*2p ( yrkij5a1akngt. mr ;vnce of 24.0 $\Omega$. 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 ofvc -p*jhj jr*zr y:j95 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 coilj9 (d 5lnmc21)2r /c so/a4ijwaigud b 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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