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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 ti/np o9lrem9zydm ,i 4 4e:8edhe terminals of a battery, when no current flows,/i e: 9y4oimdm4lp89rz ee nd to 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 between the termi3qcjwc k26v )cnals of a battery, when current flows to an external circuit, is refc qc2ck) wv36jerred 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 resisto 5vr .r4dw2at8 qm;cx2/nifumrs 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 i8 6fcus,um9s u7mbd6/0 fz dpsnqd q,+n series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistorsp +-1imuix6vghq l17 d are connected in series to a battery. If the current of 12 A flows from igh-m6ul7vxi+ q dp11 the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a ygw: feu+7azo0k+ vj3 12-V battery. What is the voltage across any one of thezeovw ay++3: 7j0kfug 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 feu4zwr2bzlf6e1 u( : series to a constant voltage source, the power supplieuw 1z4:bezf(l26f r eud 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 -.jrqw1ns 0oq2ibpl)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 can be cert o20om wc(if2 q8imw:yj g)z;f/cr +opain 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 p 8ijvd.o z96bfarallel to a 12-V battery. What is the voltage of any one of the rez b8vi6.df9josistors?

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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 battercd9374yroa/iy *mwp8:w0l 4ceye w fny. If the current of 12 A flows from the battery, how much current flows through any one of the resistor cf:i/d*e4 y m7r9w3n4oae0lywwc y8ps?

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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 :. x+-7baqbt+r.wbej;nkv pdof Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negli:wa.bdtv.pjk7r ++ebbq -;n xgible 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 paraljepbf a, *29wrsr z..alel to a constant voltage source, the power supplieda.,erp29r z.w j*b sfa 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 mav;zv qth;g0my3j wul.94,d hwg7 l j1hximum power each can diss0;g 9huvj1gwzl4vym3lh,j.d w hq t7;ipate 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 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 rule e2 5vakcu4w*dvb fl/,.
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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 dukw52.jla:y uk(;ztrule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an exa slvou1 t6 z+ *9s5yawgji6ci6mple of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction0p +o3sv*0 *cfvdy pch 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 hx)h1nypbk nnn7.5f s4 jyb5n2ere 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 storage bat9(9f:)h/h clsptt2qf3v lvl: lm5owjteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combinatio( l:h pfsvlmqll cfw:9t93/)j 52voth n 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 "-" 5+p-oai2vs mo n5(gw kto "-" to "+"), ankna52(g5wp oo+svm -id place them in 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 sxr,ed.09ry zmt hwj /,torage batteries together in parallel, and place them in a circuit, the combination will 0rwzt/,xhj9yerd . ,mprovide

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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 arvqzxe2x 5pkw+9et * z1sc0u9ke 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 equivalent capacitancj(x+olw * submb2 ky8/e of the combinatilmkju bo+2y/8 b*(sxwon 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 a batteze f azaq4*/nb67b6u0hb .u ch1trr4hry. If a total charge of Q flows from the battery, how much charge doe uer bh4/azt*z1bcauf 40b6 .r7q h6nhs 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 are conn;x p,o mf;e82l40 zkn0 0lct rqy,saavected 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 inkzm9etyc)da3 6 ev s)+ parallel, the equivalent capacitance of the combination tk)d39e vz6)sm+y eac 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 c0 jkti9cw3i69kp kj512zctceonnected in parallel to a battery. If a total charge of 629zk j1i tkk9c pt0i 35jeccwQ 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 the quantity RC?18t7glcdw:n q (jdt+mdf2cn )

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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 ibe(dks03xm t ,9.dow zn series to an ideal battery of constant terminal voltage. At the moment contact is made withtxs ( ew d0zok93b,.dm 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 ali*q + 5ebxue0re connected in series to an ideal battery of constant5*equ+ xb0ei l terminal voltage. At 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 capacit.bw90r vw7h bior are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, 9vrib7 0w.hbwthe 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 shou5x 89iaaj g6raq j h---r8uorald

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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 addi dj,xzi .69rj kg3z,petion 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 placi5 1jqwgg 5(c :ydnfqamove(v(g8 c(,ung an ammeter in a circuit consisting of c(fg8ga, w(cvj uenq og (d5 yv:1m(5qone resistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistan8rq5*c+ o4 i-won1 eiumglc)fce of an ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltm ;39u ,ayppu(r9rdil6xvf9h0a p; exuo za+r6eter 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 resistanc mo/f( ru um1,n:+ylkke

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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 x1rahwn-mt d:t8x89 5 )ckxzuacross a resistor. What happens to the total current flowing in the circuit a 1kz)nxu- x:mtxw9dt h588arcs 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 wired in series ddr j.q0tctn rdjv3 g )jz.0kc f(;)t(ex:v7awith 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 recedr).:t jfc0tdt) j;7. gj dqxv0z3k(a nvr (sistance 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 voltmete:h/h)8kcjsy 83z g mtwr 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 yh8htk3)cs zg/j w m8: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, ans/b v2+g0xoal9w*wm pd 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 6.0 1bteym4k86u.yr0:pm azq;xv $\Omega$ 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, 4a/.ndxfkzm ,uup -j012, 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 see;6ivd;hj h0 3suikb9ries 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 of a 3gc.wtj t 1i.6 lhwg:h2.0 $\Omega$ 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 combinatih0s+kujua7r 8ps4cr4on 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 parallel combination of a 4.sc +0l1x/kwqe8+g vow0 $\Omega$, 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 cofhm p ryiv562i0 8o0rimbination 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 corlsg) +u+9vrk jlu97k 6p7mxhnnected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the s+ur 9 +)k6ksvhl pg7mx7ljru9ame 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 numbe*9-wnm(bu+q qbqh- xoycpokwk l(.+/(pm: qur of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A clc/:k*oqxmpyo pw+.uw-h+ q-u (b9b qm q(k(n ircuit 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 xx9n ooy,:t0gf3.kry $\Omega$ 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 b8rzd/,t4iixcv :g7 t0 $\Omega$ 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 10.0s 6bz*z bb+. xb.wvyd(6enkd a+p(u-l $\Omega$ 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 98g;wgp lx,x2dv4 z1ua.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 o6e4 n: l )8lik6qp*sgjtkm,s 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 5.0uw*-, .xx qdhs3 hjm4c 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 resistance 0 fp)x3cubxd, 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 throughy9w7i9 j pj9d:*xlfwx $R_2$, 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 the circuit in Fig. 19pqgg 1y/sgy 1/-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, determiqd wkleq1/1g8fn s905 1sbgxa ne 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 ty.gbtvxh bri 0-m:; -bhe 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, da4t ql39/o sy/y,bri letermine 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 F7c dv(vf1uv;qicms)6j it +1mh/vnp 3 ig. 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 Fig. hv385u8jul,eg*l y3s3 pd ds e19-5?


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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 relative y41 4ue20o aeeusayi2hhu8 j7 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 battery in Fig. xgkk9v 0:39 yyfn,x40apjq q(yzkj/q 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 Fvg2dbbkk)m pj2e)syy6 5z1oa:t r+s-ig. 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 thexwtn/k hg7sk-p *5u5 a 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 insu8+f zy8jlw8cq4d5z the 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 4 7eig ()jaqhvxq, h*jd8mv vln 8d acpd.45a1.$\Omega$ 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 1d8.bf omp: nb6vmrcb 7u*s,bv1mngg82 cj-s3 2 $\Omega$ 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 iae): n 4rx6* gcp7 2aspgizi3zn the 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 upper left z-(hrt83mwlzi6/jl,hc)r sh and lower left cornersz )isr8 cl6lhw3( -tzrjm /hh,?

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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 svij)cxqqga;87bb 9lx(,yx; cj5 sl4eeries. The equivalent capacitance of this com5x (qjvy 4 a8xqgjsbie lcb7c;; ,9l)xbination 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 aretd1(),0lptzcp/ u.us + rws wj connected in series across a 12.0-V battery. How much charge is stored in the 5.00-mF capacitor? ,0p1w)rsz/ .ctjups(wt + ldu

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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 capacitk+mq/x5ll .rare2n ;sors are connected in series across a 12.0-V battery. What is the potential difference across the q kermr/ snll2.5ax;+ 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 acy)vt4)d h95 uw btfxl+v7aa t3ross a 3.0-V battery. What is the voltage across the 1.0-mF capa 7x 3lb) d +th5tauyv)tfwv49acitor?

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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 capaci*dntsw zrkk -d2ru065j ;( tuptor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mw k0r-s*r(td2 ptknuzud65 j;F 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 capactjf0 .rlccpg ;zea9 a8b/g4le6al1 ,mitors are connected in parallel across a 24-V battery. How much energy is stored in this combination w1 tjl8bc9a 6m ,/ eelg4;aazr.0pflg chen 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 parad 1da d*tbgm1j+yd1h)llel, and this pair is then connecte *+11) m1jdathdg dybdd 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 x+mi l-a5*y3lkt1;mkf z mi+ pparallel. The combination is then connected in series with a 12.0-V b1iklfm- i+yam +plm3; zxt*k5attery 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. The combinati( tc1(pu;urikon is then connected in series with a 1ru 1p((ti; ukc2.0-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 8.00dar33u; ii.hpdt5b wt8z1a t+-mzl1pd qp .m/ mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage acrossldbr. ip.hz dzd31mu t i5+8pa- 1qt3/pa;wmt 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 througp4)phb rw, eg-h 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 /ey .7 v,5cfo oay ais32:ickkdsv 9/c12 V and then 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 con-qn6g:5y zusx il i/h-nected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged byi-:gy uhn-/xl iqsz65 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 6.0-V. It is then connected in shqvt6y *.d9g *sng b7deries with a 3.0*ghvsg9q* db. tn 76yd $M\Omega$ 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 aseh o7au en,*+/ mlz9fgb-sc.n internal 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 a3utcfl*y7 t as nh 6r5p(*wf1pa7ca 00p4hvwe resistance 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 offi pfu) 2h*s+wnlcqt+:o g)b- 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;7pz.3tc j 8gf rsy c74tted:g 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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