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习题练习：Physics Unit19: DC Circuits
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 作者: admin  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月17日 12:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminalsgrl.gw j 3/(wl7 i6l tv72ixur of a battery, when no current flows to an external circuit, is 6t3l27i.7 lg /urrx lviww g(jreferred 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 tepfd9fvqx:524lnvxr ; rminals of a battery, when current flows to an external circuit, isrdvq;fpflx49:nv 25 x 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 co0pl4az *hlb7c nnected 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 conbgaj+) mzaod8 c,6s c3kp0e,xnected 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 ;0opkpihsff1 zx n 3*2battery. If the current of 12 A flows from the batnopfx2;1 is*fp h03zktery, 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 12-V bat d +-gkm98xne3hv,ba jtery. What is the voltage across any one of the m,e gb9jd-kh3vx +8an 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 3 r o+a1kk1maf xuow-uc :2mi11x/vcladded in series to a constant voltage source, the power supplied bcmix+vf cr wmuol13 ak :a/ x-1u1o21ky the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are 5lbto98;h 9 ffv4k mseconnected 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 certa,slhg9zf3dd3+ ydu *s in 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 battery. Whaiz o v n*igrwr9)r+ar)0ude.2t is the voltage of)e)r.wu* va0 r zi2nrdor9+ig 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 ajuz 7m5c evf. t:pd(nrv45l0hre connected in parallel to a battery. If the current of 1 f ch:.4vl5 mredn0t5pvzuj(72 A flows from the 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 Christmas tree lights are con./sgc*zx s0u-xzb :en6 l1hse nected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires lea/se-x xn.z:sh06 1zs*luebg cding 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 constantwg8nop*ir9natvtkg- 5f8 n ; m p5.:c6wm2bnl voltage source, the power supplied byi n*p85; 56gmw ogm9.vn2 ct kfnnwbprlt a:-8 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 re:(.bdwxu bx/1 ci. sps21gcuasistors, each of resistance R. 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 maximum powei2cxw /sup xgd .ba1 sub1:c(.r 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 junctio-:z5(npljl9lygvt + cn 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 ruvp4z)1yv qy+mle.
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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 example of8pb+ : ieude,d

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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 isx3*wl gw(fmd6 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 cij efn *c ev k)x .;r1zb(rhoo8d9+pav1rcuit 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 togv(i e f yhmki8.xvrq+l,w8dqm2: g.r+ether in series ("+" to "-" to "+" to "-"), and place them in (v,+ r.2f eiwmlg+y:xd8 i8h kvqqmr.a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in se-sw8:hfr26o; d ; y bcxkiq6meries ("+" to "-" to "-" to "+"), and place them in a circuit, the combination sqf 62b ex cmdo:68;hik-r ;wywill 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 st3k2 oihi3hg0g/ q2qct orage batteries together in parallel, and place them in a circuit, 3oc02ik h/gqqgt h2i3the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connecmrd7 z( -dtzk8ted 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 s6asz99j-jr3vgnj -l nu.6pd equivalent capacitance of the combinatd nsal-9s9j-6rnp 3 u6vz jgj.ion increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacit dou/t1*/sij ekzq.6kors are connected in series to a battery. If a total charge of Q flows from the batteeji./ok*tq s6u/ dk1zry, 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 capacitorv/iu/* znay2 ts are 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 connectexw:yx1+/u fxkd in parallel, the equivalent capacitance of the combination increasew1yu/xk:+xx fs.

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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. If -u/j*a zm. sgwa total charge of Q flows from the battery, how much c a. um/g*jw-zsharge 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 zkhh 3gy2;o a5feii*;7qzac9quantity 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 capacitozys+ypdl+ z. 3b kv.1fr are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitor ik+.1sy .+vzbl yfzd p3s

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to aih5 bq6mz bpol 3n0)2rn ideal battery of constant terminal voltage. At the moment contact isphi mo5qzb3l b02n6 r) 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 idea /iu v6)fyq,til battery of constant terminal voltage. When this system reachevytui) ,qf6i/s 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 should-v +fzh58y m geq.e,wyi9)lfq

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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 addka5la 9 5i)78g8 g3wuazymurtition 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 i1gob e) .ojohd to mc0:-i,*eby properly placing an ammeter in a circuit consisting of one resistor and one battery. As a result,1:),o0iohibo t-emcjodge*.

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistan c y*nku*):,duqxkp, b;t0et yce 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 voltmeter f+h x .r4ah)tlu e1n7ivrom 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'wh)8c q* vlfu2s 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 resistor. W9b nh6 i)ki1zs-d u5d a+lpd3u 26nujhhat happens to the total c9ud 6dij s6plbk3i1d nnh25 u+hzua )-urrent 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 wired in seri- td4ji ue 04n3qx om+thvot2/es with 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 resistance by dividing the voltmeter rea d-u 2no+3o4h0mtjtv/4 iexq tding 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 voltmv)mk p ku:a)0oeter 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 divipkk :o0m) va)uding 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 12ar y.9o* 6qyip:p l;.;.pb dlw (icrqc, 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 6v:iiy u -5t)fq.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, z0awa 3ga9 18.khvyov 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 d x4rwv5)x1- ew*s : fkoq.ygua 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 u3;n:)vlgvf u:q j1v 9 y4dhdhcombination 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 co6 8f)j 0,7/pol arorg(qic oblmbination 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 part/yi+: tfgjx6f i0 2ha9 4uh*i phw*xv 67klhlallel 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 rq)w s13unn f ap*0dpt0/ini:q,u8 f ua 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 arz 43:fdy3k*/-fthqcyiu. k k fe connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 3cz4ifd- f:*yu kkkt3y./ qhf600-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 nxq0 x; ,p.dtouq)x48 ,uwo j,h oihv8fumber of 100-W light bulbs you can connect in parallel in a 120-V circuiwx8 o0ho,8,d.fu qtvxju qhp,i;x4o) t without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 gva0b8t tfi78nm.r+p $\Omega$ 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 au;1b6 j2 dn, )muh.o9noi-r.yiquy n mnd 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, and 10.(b7 3zma d-c9d +onnqy0 $\Omega$ 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 a:q0e7xrinsy+4g fhje7i (8hj9 aju0h nd 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 and53dod;5 nwg yf- .nayo 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 r7wh aor k:mnd 33xmtsd* kk 0wt7k.,3and 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 re4 5+ cv awyw)4lihcb3qsistance 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 throus4 85)o b zrnyyw5v8ukgh $R_2$, 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 resi) .ckhsly(efns:w2( a stance 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, deter5m*jwm3( ymsi,l2k eimine 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, de fdj/5.aag9 b iirao/3 twlgh/5p 1eh6termine the current 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, determine the current in the 436f lq* gtst2/. t08w pnlialg $\Omega$ 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 78 gl/qloy. t j4q3mtato 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 k e,i1uddwh*z 4t;r 1wB relative 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 relative to point C7gfek:*nn;q(a bp8 gk 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 bat 8hwqkl0pqex ;fljj:.2j m/( ntery 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 fr*b1 ko ermm rxaw900b,om 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 dyz*2zep1kn 9nc2 2zyk99hgjthe 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 ifepxau-,3k 8n,ec9qjz mhq/- jm-m8h n 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 thebn6frz98 aj4yv :aoa( 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 ia;fnw .. a/wbun 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 tocn uafi2+/a .vne i64he 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 lsz1 z,gtz.: rnower left cornerz1st.:zgz, r ns?

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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 capac2r9u2m3 fff(k bkrt/citance of this combina 2c/9(f2tr km ffb3ruktion 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 in*htd li id;/w tl*5c,c+zy+hbq1l1 sv series across a 12.0-V battery. vwbl+ ;1d/htlcqil *ih1d,y5s c +t*z How much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected ir-1 rf9xxn ,bwn series across a 12.0-V battery. What is the potential difference across the 10.0-mF capacitor?, fx-nr9wbxr1

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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 capacito-,1jg5o sn6glupnwq 8 r are connected in series across a 3.0-V battery. What is the voltage across the 1.0-m 516pg un,j8qsgl-ow nF 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 a7d nr0 a646hdylmz-xg 3.0-V battery. What is the voltage across the 2.0-mF capy7-m 4nzr6g6dhl dxa 0acitor?

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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 wb )owt; ;2 gla;n3el4 2zaxvh3.0 mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fullyb; h2;gen a2xl)az4 otw3v;l w 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 t7.3evow9tfz 3 8d dao mvq0-cthis pair is then connected in series with a 300vmwdt7 39.8o-ocz fva3te dq -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 vpij ( - i+z4fwhue3x)mF and 8.00 mF are connected in parallel. The combination is then(pwx3 j-4ufei+i)zvh connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF ad6 61fotrz1eza * hcs.nd 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery an.r6oz e1f1 s6* htcadzd a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mb m .e0+mhpmx20gg4osF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF cms2 xm+e4 p0b.hog m0gapacitor. 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 chargede78.2t(vtbfrk; y5ozbvgp *hnc1vme2/o sl : 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 topl e9laj/:ngibjw; ,+ 12 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 connected in ser.a *zb4aunw/kies with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltageu*w4z.aa/ kb n 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 ser - tct d-2*puzloa*8lfies with a 3.0d*8-*ct-lpotzl2 af u $M\Omega$ 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 resistance of 100+vtjx*/ax vz;7mg jzxvp1 / 7u $\Omega$ 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 aq0xhy1z inwke,y9u 7mb-:2 wm 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 of 10)hsoti2u/q r wz7a0899dybl x0 $\Omega$ 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 cogpr ,4e pv1jv0gil 3(mil 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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