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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 betw , xll4b pntp qsjqvzi;;p 6)3q/vo2)eeen the terminals of a battery, when no current flows to a 2v qz;)en sqvq/l ltppo6pjbi),x;43 n 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 between the 1xv ek; )10no5ir7usnle idfje 4y6 2sterminals of a battery, when current flows to ane1e541 s nn2 6iro ;jsul)d0efkv 7yix external 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 resistors are connected in z:vqg5;k chz/0m7ykt 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 connectejitjn 1l;:a8z 2t /xikd 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 the9l i wpj b83,: bblgoq7dnc.u6 current of 12 A flows from the battery, how much current i:gp7 q c9lb j.6 ub,lnbdwo83flows 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 seriest dz1;ye +0z hpg+1als to a 12-V battery. What is the vo d1 zszy;1gepth+l0+altage 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 s40y;7tdwt)a (mgsyjnupplied byayngm j07);(t4tws dy 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 resistn x92c.sc gt/iors are connected in parallel 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 can1e 41)k zlr-ks (blysv 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 battery2lun2y-(wcw z qin )z5. What is theynu wq2wln(z -z i)c25 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. If the cur02 7 lib9kumi wf 1ken)so9sn+rent of 12 A flows from the battery, how much current flows th 9k iwk71n s o2nu0mlis+)efb9rough 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 l9x yc;fy3w)a lights are connected in parallel. What happens if one)yc fyxa3;9 wl lamp burns out? (Assume negligible resistance in the 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, thi, v,bpvygk 1ina4p/k* .l/ 56u fpypme power supplied by the sourc .m*n1vfpik 45 k/vupiy,a 6,/gylp pbe

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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 resistanceu5*ye zth :)2aq7nl qv kc1a0s R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a 2 sk tqcn1z0vl7a*q uea:y)h5third 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 junysoti 0bx t*w d)j/i0/ction 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 rr pg7r x:gw*i0ule.
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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 isot qu/dfqa88t 84lqn6gh,*nc 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 o-)xu- 7 ry(dkf n2uimrule 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 shown? , nrkzf 3k:;tk


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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 ("+"i7t .m (1eeijrp7g qd5 to "-" to "+" to "-"), and place them in a circuit, the combina5t 7jr1ip 7g edqemi.(tion 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 ("cxcmtm2d: -pbosm*/v-o 9bq wvt2d 2 c 9/lot0+" to "-" to "-" to "+"), and place them 2tx/cc wvtl2qmo9-0:pocvbod sdmt*/ bm-92in a circuit, the combination 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 identical+)j6cbjs 9dthc ne 5d0 storage batteries together in parallel, and place them in a circuit, the combination will prov9h6sc jnc5 be0)j+tddide

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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 seriyc5p k57r9 .*pe5;nakgtm spies 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 a 5: rp(aq7 yy:f2nvo5:+pjdbg4qcxcc re connected in series, the equivalent capacitance of the comb:cc : :2yra qjpvb5gc74od+(5yfq pnxination 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 sepy p9)8b 2 +ta*dblujwries to a battery. If a total charge of Q flows fropu9 b8p)wtl*jb yd2 +am 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 capacitors a20o 4dn hj 4ng;yjl9xkre 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 capacitan;u5-*l*d8z smkz p1oqhi+ hwjce of the comb5 jmh*;uszp zqi + -wokl*d18hination 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 connec0m5qoy4vbwju ;q 7lq7ted in parallel to a battery. If a total charge of Q flows from t5 v77 ; umb4wjlyq0qoqhe 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 quaqnn7m luaz 60,ei, :tnntity 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 ideqfzjg b3k+;mj ii6 90tal battery of constant tt;zk96gi j3+0mbqi jferminal voltage. At the moment contact is 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 serwad7 mxal 6.s;p7vt87 crmj 4yies to an ideal battery of constant terminal voltage. At 7rmd; t.a7cja4m 6svpyxw 8l7 the moment contact 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 connected in series to an ideal bav cow0sde 2 8hu;i*qx5ttery of constant terminal voltage. When this system reaches its steady-state, the voltage acv25q usdhi*xo8e;0 wc ross 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 sho)w d7gy:xz te4w; kvjl+(r2nould

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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 ap)n/4dyl.okxfh n fcm cn-( 9 )nwte,4ddition 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 properly placing an ammeter in a circubjh:k w+.vm rt7 cv)l8it consisting of one resistor and on ckv7:m+lbtjrv h)w.8e 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 of an ammeter's shunt resistance;7 t-6devt tazic( xh.

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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 galvanometer, one nornaly 7(.w9 gzhmally 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 v wk3xr,n5thj;0 jjq uc:4l-ptoltmeter'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 obhfylm)14 uy-+/fclr o+ 6pmy gtained by placing a voltmeter across a resistor. What happens to the to1 +6f myfp4g+o/y lu)l m-hrcytal current flowing in the circuit as a result 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 wis0yydn lby97qzn 24ud8ea3vq g-57q y red in series with an ammeter, and a voltmeter is placed in paraa 0ydnne8qq779v3l g-4b2 uqyyz sy d5llel 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 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 with an ammeter, and a voltmeter is plah o40 c+ ye/yn,me;zmaced in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by di0 a+e/4hey zm cym,;onviding 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 129b1d cz 2qbv5e, 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, 12, and f+g; 6uw8n psez8v2pf6.0 $\Omega$ 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 1efy90bg ce f;32, 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 series combination of a w*voa zl)v ;i-- khtv13.0 $\Omega$ 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 combi4m fblfnea97 tsqipq i.3:.e*nation 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 combination ofaqjj..z+g:yykn1 i6 h bdb(;g 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 paralsfk38h/j-)(noyx)geu euc ,qlel 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 com*.+8 a3i yobjxpjehrjvc +cyv-.5 .hjbination 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/6hyj d0e h*lo a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were o/6olh hjed*y 0perated 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 light bulbs you ca t9iyzyf+ -i (s/vu43 invld,em aq.j4n connect in parallel in a 120-V circuit withou t4z y yn4ve,jm(9ia +fqsu-/vidil.3t 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 2.0tu x;uf/ zqkf d3h(u92 $\Omega$ 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 30-g+hd:(4)qqcvzsnjja uhgu2x. n:e* xap s9: $\Omega$ 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 1bz j.9pe nut:30.0 $\Omega$ 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 z)64*sz yson:zqeh)b 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 5.0 and 9.pv1xmm )50qn+ : rkaev0 $\Omega$ 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.r xl- kf+8m,0*p h)s7 pzkhlpt0 $\Omega$ 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 resist/ hz.itzlj; d+ance 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 througwa82r1bcz 2ftmgrnzpl 74 7t 1h $R_2$, 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 res-bpnz gny)4 0nbcv l2t8c:jn6vnmk1/ istance 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, a-a zjr v:i -n0h:v-zefm:sjx5ho23v determine 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. 19-4, determine the current in d0m4e8,t4v jsqo)jm w 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 in theqf n5cz)8 )m2j6/ikzt 1pyfn w 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)rou(cd, i7z m2bxsa + 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 r-j o b604hib,s iynuw-elative to point 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 D relativ/p 1mj6qe dm+re 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 b 6r +bp+cyc0keattery 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.6rf:kj.2bfy o 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 currenje0 *e,ue mnw7t in 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 the 8 wov5 :vc; f1z5o ijrp/$\Omega$ 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 .qpwmpb-xfsee/1. i8bas9j( d5 viz)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/ghykza6 c2;g 0m )v(t a*z: )xvwtpbm the 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 ; 948qopjynt- 2 tgm z:fp2* wmeaydo6the 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 wir3rvkcwwlv 6 7zqhq+znsv 1 ;-5e connecting the upper left and lower left cornel-w5h+z3 v r6qns7q;kcwz1vvrs?

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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 .f* 2 r5-531ipvoamq urgpegk series. The equivalent capacitance of this combination i3uke pra* mrf1qvg.p5 52gi o-s

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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 in-4hv4n4hk e *cj3 byfv series across a 12.0-V battery. How muc44nv-*h3hck eyfv4jbh 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 cowuiemv r)mf tl46k+k + 5,94rteijc1mnnected in series across a 12.0-V battery. What is the 4+ f6mmt elij+5m,ice )krrt4uvw1 k9 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 capacik33 kb,9le h7tl1..ltexkxootor are connected in series across a 3.0-V battery. What is the voltage across the 1.0-mFxlol1 b3t37k9ol. t .kkh,xee 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 series across a 3.0-V batteh( ztsl ur-v::g td/1cry. What is the voltag-(u1 /rvgdh:t :s zlcte 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 connecta 7 paa(4bq3cs01ujz /cxy7oved in parallel across a 24-V bat bs1c vaaj/po ( 4z73auq0c7yxtery. How much energy 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, and 4ge/hr0k awqte; o 9s5this pair is then connected in series with a 30-mF capacitog/9 rkeaw4o 5the;s0qr. 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 parallel. T 1 z4m4:vitc3wke pon:f +4fbxhe combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacita +zxb3e:f p4vk4c tw 1n:f4oimnce?

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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 paralle*+qt/htd(d ial. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What i+hq (t/tidda*s 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. The com ztc2v21 b9hzwbination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across9zt2 1hz bvc2w 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 charged through a3bex1t kvsie4hm2 (ow.+f he 8 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 througn ovjbk.sp,+ *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 wit 1xmolq,s17 heh a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combinationh7 elxosmq 1,1 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 c sk3 c rknipci00.9 )tkqn/p9rharged to 6.0-V. It is then connected in series with a 3kpkcp9 n0.)r it3/qn9s krci0.0 $M\Omega$ 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 resiqq3b a8n/wm3pjt8 4vf stance 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 i4a6x;ol ot50r * n8(vx:ya0punikoi24.0 $\Omega$. 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 intuutnkgkv- cl; 95:m2+x:b urzernal 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 coil resistance of 4qon/-/ zhpfv20.0 $\Omega$ 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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