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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 bx/ 5+g el1g3upj-80gpnymgta .ylja+ etween the terminals of a battery, when no current flows to an external circuit, is pjn./g-g gae5ju+ +lm 8l y1ap0tg3 yxreferred 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 teqhe1.z4d eli/w* 6f:uz5- lhj7n eskvrminals of a battery, when current flows to an external circuit, is referred to lefs4hequ - dzn w6je k7vl/z.i*1:5has the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in series to a battery h(h41zs 7uchp

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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 serie-pc:nnij7)c*o uyis hh0nv8 af i,u fk91u4w.s,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are2 b4t g-8bpfae connected in series to a battery. If the current of 12 A flows from the b2 tbpfba e-48gattery, 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 resistorh ce5q r18at7as are connected in series to a 12-V battery. What is the voltage across any one 1ae5 q87t ahcrof 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 inmm 4;zz ie, .h089 ijriot:gcz series to a constant voltage source, the power supplied by t 4emi;htjz r.oc9ziz8 i 0m,:ghe 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 paral vgmpd4 9 ai36dgtv2.plel 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 zlxym /r 4m)(bzld1* 7cr.zlkk;e9pvcan 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 connec67 ;f wrt)liqlted in parallel to a 12-V battery. What is the voltage of any one r; 76 qtlf)iwlof 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 wm:,n vm(g 1kn )g,sjathe current of 12 A flows from ng,a v)wmjnk(1g :m,sthe battery, how much 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 Chrik) xt yis*y5hqcz+31o1.:sw 8 rjmelzu96dgc stmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance1)1e59 xhoq.83ycs+uzzlm *krjt:s d iwy 6cg 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, the pow/zvkd 8ndh wfzl((g2d8wb(lkjd;y/ + er supplied by the sou((zyd vwn8jlldf ;d8d b/ 2 zw(hkg/k+rce

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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 u p+ *.lzst1th vvsx/-o*tmnd*3m :dg. The maximum power each 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 maxi*ugt +do*t- tsvz:n1/ phsvxm3* d.lmmum 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 ru9 - 2ag3hwrskrle.
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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 r; wv m6gddszvx/q:5 a ,by:,a0iido;pule.
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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 examat*efgdikff:s/rh/ ;3 j chp6*x3a1eple 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 dun p/zkny7k)k xca 1 a6z98s9is 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 he. cssr7g llarh32/dq5 re 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 batteries together in series ("+" to "-"hs78 lv-rpb o1 m-yj(l t;n)sr to "+" to "-"), and place them in a circuit, the covjy rpo--lst8(n1s 7l m;b)rhmbination 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 : ,h ,im;j/ygm o rl.owfr.i+j"-" to "-" to "+"), and place them in a circuit, the combination will provj :+lwr/f im,io, yjrm.ho ;.gide

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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 pg6vz3jkzhrd4 n)0ux72 sp a7 larallel, and place thr74u k6)pnj0x s7 3gzdz 2vlhaem 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 capacito :nmer,15i djurs are connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capac2-qy x( y-iy-axiwuu0itors are connected in series, the equivalent capacitance of the combination increases(2y u xqiu-ya-i- yxw0.

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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 battery. If a totyul6 lb9ue jkq2,( z1ral charge of Q flows from the battery, how much charge does each capacitor carry?1qze 6ulkry(bujl ,92

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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 parallelef+k)wc/o2ne0t r + rd 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 paralle7g2b, gk0dq i kuwri1:l, the equivalent capacitance of the combination increi7d:g1b w2ikk q0,u rgases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery. Irxs)-9y3 xyzz 3po0wxf a total charge of Q flows from the battery, how much charge does each capacitor carszypo9w-)y 3x3z r0x xry?

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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 quanh.rv08hy,d jpfv p *5ptity 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 anq*w(f ,l)nx xdpl(u p/ ideal battery of constant terminal voltage. At the moment contact is made with the bat*pl(xpwf(x l n),uqd/ tery, 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 capacito 4rk0hc 11nifvr are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made wicn401fr1vk i hth 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 battery of pwxqd4.2 sibaqh07; rconstant terminal voltage. When this system reaches its steady-state, the voltage 27wa0q. r 4h;psixq bdacross 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 .4n 06 sxkw((kfsngfuuld

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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 adro g49pye9up3dition 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 properltw/uod.c yma2f e: *-ty placing an ammeter in a circuit consisting of one 2yoc-tu* a e/twf:d. mresistor 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 resistance of an ammeter's shunt :; 5i6c;fjx ;wdzemubresistance

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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 volt: t ci*ap u4rb-g7jtnz0e 2/twmeter 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 voltmete yrj4ca37x 2q pfx1axt0dm.a,r's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter across a resiz 7*hf7+s8hqa b +to)leb3fj gstor. What happens to the total current flowing in the circuit h oef8+ tq a f7zb3hl7*s)j+bgas 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 with an ammeter, and a voltmeterua2bl:y0 y,;y4 skdvk is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmkyu:ylsa ;d by04k2,veter 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 l204kt8oy9+ i0v/ dit v v6une0v+yb9dedj yiis wired in series 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 r82 iydy oin/j0e0 9b4vuktddy+ vvt9+6ev0 li esistance 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, ann zoagpiyg f9pe:.8j+s/33b uv.6mwj d 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,(d4bx+w;n z 6hmtlal ivw,;y j vc4m:( 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, t+zbrg qme6g ce+r87 5p) x)gg12, 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 combina70 4ek*zi(aq*tah 3i6- e annq4dvpgo tion 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 combinat16*y zp 7ph*mk6fbi jj9ef h:kion 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 parallgi +wkk,:n6b +9jxsb li3b3ejel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combinatiouq5*lby kqf k* xq33s*n 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* /p755onmff:h;20 oul a1kopzdrifg a parallel combination 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 d*amfle3 3v u)wf7rwstkc );/toaster, 650-W coffee pot, and 600sv*r)uf) f wle3ma 7dc/; 3wtk-W microwave. 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 light bul pmb,h-w;,kzdr5 +bkdr9 4sf lbs you can connect in parallel in a 120-V circuit without tripping a 20-A circdr m +fsk;rlz -9p,,wdb4k5hbuit 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 2.0wbmy1,pl 3* d9v6du u3 cd9sd1 y5mtvr )e-nlz $\Omega$ 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 u73yp,q :/lsx;.u8li imly yuand 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, al ts1dl4 f2cnzcn j +xj;q+3p1nd 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 andh3;fz /x xj8op 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 anfw+ g)7k3g2cu7ti 6 1os;0b lcns sbxwd 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 5.0 andxc)tqq+ vth.r m.+f )wpkc-k 2 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 circuit ie ,z6dv7tz67xcguhqyo /cy:x 2a9 g5,do v g)dn 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 througf onazqg zqn8f;1ryfcp1f*b*3u8 + /ph $R_2$, 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 Fi* g*unlar 4jry(vs1z3g. 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 y60v:rbrxe7pst1u2w*+w 0un6cu hxn. 19-4, 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 the av6j/o*zg x+g 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 ukfs:* d wf9*ythe 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 o y jify i5uam,okap (2-cu1frq/32 2pin 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 e c4g/80mxx;q1hf-b q1w ,di ,ycbbsjC 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 relative to point C in Fig. 19z yhw 7pt54- hp7dp hk1wmp7t)-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 j.at /hz*pbpm k7m)0m battery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to poin- b:kw4:t- rjlqahue.t 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 i3qya7 g zkzh*17 xc+t7 $\Omega$ 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 tg 2-umwpv:wo 7he 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 4h:3u,1c:i3jvm silcu bcuv6 (u / zvp5-bogi 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 z.6mremg u3c0 8of sf412 $\Omega$ 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 ine9o yip5e /yf:pt: 8xv q/zjh2 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 and lower lwmu ck :i9p-*veft corners?kuiv w9:-m*cp

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are connected in series. The equivalent capacitanck,shygq 5 +p9i5 dt/neyn/e8re of this combination isg qn 5ke5hey,sy/r8/id9t pn+

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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 5 *wv4- vxyi2uv0.0 mF capacitors are connected in series across a 12.0-V battery. How much charge is stored in the 5.00-mF capavxi*w vy-4 vu2citor?

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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 capacic1fd h,9h7p7d2yf:upj qr6t i tors are connected in series across a 12.0-V battery. What is the poten27pjf 9pt61rdyh:, idh c u7fqtial 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 3.1l+ 7yuoxioc hsty, 2edqe-w; hel: 000-V battery. 2esl-y7h0,dciow tu eq l:0; +yox1ehWhat is the voltage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in serih ee9 x (a0o(lqjp)tk9es across a 3.0-V battery. What is the volt)o(9jxel kq0 ehpt a(9age 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 connn0 8prr3l4dr fected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are ful34 r drpr8lnf0ly 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 thiszph6py9 /5 k(1ih6m8ufkgm vf pair is then connected in series with a 30-mF capacitor. What is the equipg6(h yfkm9mz 8i/u 5f61kvphvalent 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 parallel3 ozb+rwoqp.b9e t,68bnyx e v66bc4j. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the e94p36xeoebob6jtv b + wy8c b.zqrn6 ,quivalent 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 com8fg*bz t nz-/+sp fgtx .ry;j1ifqr3- bination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor8jzspt *.; g -/fz-ynxf+r3ibqf gtr1. 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 m;j 8bihwws/v97ihe v3f1ms k5F are connected in parallel. The combination is then connected in series witki iv358j7ws/weh9 f;sbm 1vhh a 12.0-V battery and 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 charged *)60y .fkye4spfuqv9rh2l gk 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 dischv(6heubt -i5 3) etxhqarged 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 wibajy 0758)z8zz)r- :px uxqc *vuuqvuth a 0.50-mF capacitor. The capacitor qpzxuy 7b8a 5) u0 z*vq-ju8u:rv )zxcis initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connecv4dq jry63a,g ted in series with a 3.0 g3 y4a6 vd,qjr$M\Omega$ 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 interna b5 frqi60p zp/hci jtk,,(1,/h ,wqeuige bf6l 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 h/+pr5fyqay . with a 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 opb)x m *x9,zd )g/qh*ih ,kxtbf 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 resistancds4v/5l ahj8mwg4d b 3jh(0vje 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?

参考答案:    
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