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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 termi hv4q5vq)l0d.hjh05p - kazqvnals of a battery, when no current flows to an external circuitq5.hv vhqa)pkz 4j lqd v-005h, 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 bea176eqg pt(c)6 9l9xdgf enk nes05cetween the terminals of a battery, when current flows to an external circuit, is referred to a995d tgfg( l sc0epe ke)nn1xqa6ec7 6s 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 resip4vp tqia 0m3(rqy4x ,gb64mg7ygqv; stors 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 connecteri 7 (+er/i,+kzujenht4 qh6yd 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 the currentn1 -06 sshzn xhiyksdaj8(60l of 12 A flows from the battery, how much current flows through aj60 0iz yls 6sd 8ah(xnh-sn1kny 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 battery. Whkmc316/41 nhtfbj1 qxcc vo 7oat is the voltage across any one of the resistofxo1k3/4o1cjqc7 m6h v tb1cnrs?

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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 apbutn 4;pla2t2,t 5feg f(q1vwbo0 2fdded in series to a constant voltage source, the power supplief; l ,o naefbfv5bp 2gw412pt 2(tuqt0d 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 are connected in parallel to a batteryv*4snwjt-8a1zl :2 km x*vi*abn2fu e,

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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 parall1u(1 l tuhbq9 +0zrzasel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are conbx+k.unh /grz r 2hbn z4k):+6vf)ksknected in parallel to a 12-V battery. What is the voltage of any one of the re r u)hkk2x/bsz+fk+b)v grnhk4. n6z :sistors?

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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 connec.h qrxt-6 sae/ted in parallel to a battery. If the current of 12 . / rt6shx-qaeA 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 co60 4ycf- 0b4rtjs s -zveoejn;nnected in parallel. What happens if one lam zsrn6 c-tsf4;0ye b04j-evjop 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 pamj2 jbb9g/r9n e,go3 orallel to a constant voltage source, the power supplied by them/nj2o93 ,bg g 9jober source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maximum powe0lgc+g iynwfb/g,9y(51vn pf4m n bz. r 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 power (mf y,iz5yngg./4w+0nbcpnbfvl91 g 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 vh8)gykf: 4p5 w 71igdrasxu(rule.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loop rule.c3ryluviy3g0guflc o4:w i*u ihq a/c.1++4c
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rultn6j odgrxdea45 gpd;: yks4e h)(-2pe is 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 rulem6gh mnkf5g y0h62yd.i;sr6-5voc k y 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 herlup9 hdxy;./d bfgl;;8rwt 1ee 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 ("g g0c:yx cs96c+" to "-" to "+" to "-"), and place them in a circuit, tgsccg: 9 0xc6yhe 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 seri cq8+s6-zbq pn2ao3 .eigyy 3qes ("+" to "-" to "-" to "+"), and place them in a circuit, the yy3cpaz8gq q-3o6ibnq 2+ se.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 storage batteries together in parallel, xs54s9zts6g)v9lfjf and place them in a circuit, the combinatj slvgs5f9s)469zxf tion 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 capacitorsobkut( *e c;qo)s/s vrn* :s3*r)nskq 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 capacitors are conne 7lv8xt2tupa ss9(2 xrcted in series, the equivalent capacitance of the combinatiolup t 2xasvr(987x 2stn increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capao jng7o* 6qki 1t+ 3p:xaho5r.lb1vbocitors are connected in series to a battery. If a total charge ofgo1lojqo157.ip6onxrh3 a* b+ tk bv: Q flows from 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 are connectedef9c*o 0-lqhm6zw0 ke 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 ij9j m sm l9oa2p)g 0)w7*gqqaic/z7dgn parallel, the equivalent capacitance of the c0i)7)gaa9w/msgj9joz g q7m2cqdpl* ombination 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 connected in para 8w)de) pe*8rw(gjbfu i9oz1nllel to a battery. If a total charge of Q florw ))8 de*egpf8b1i 9u(wjzonws 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 m*wq/1hn- g t+ffwdf6 the quantity 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 capacimc; gwf02t :3l7: c en/l)duw7cjquvc1lw2xgtor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with thtl2cncg gfceuwd /1vwxujl mq2:3 l 7)wc07 :;e 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 connectw6wfnn *q*ri3n(m v .kh9 i;hred in series to an ideal battery of constant terminal voltage. At the moment contact is made with th i .**wrqh(hnrm;3k vi6nn9 fwe 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 )kqhq g ,wqw0*(0dqaeare connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state,)*hqq gwkd0w,( eqq0a 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 shou+5bx1n.uvx pu j*r/ja ld

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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 6;upi :- vg ztksj7a1wby the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obte5z ehre.o/gt8)gxh :ained by properly placing an ammeter in a circuit consisting of one resistor and)8 e5hreg/ h.xozeg :t 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 resistan0k o7rtel d 0:eqdbx15ce 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 voltmet p d5fe-pev qp-:ka-e:er 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 resist h2opi.n7 xif0 gtggi /g(qp/9ance of a voltmeter'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 acw3. tk89y :-cmqzvzee ross a resistor. What happens to the total current flowing in 8.z:3y tkecwemqvz9 -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 s/(l/y2hk89/cmu2io vi7wm;1mtu3 obpzhe zaeries 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 reading by the ame c2/o h(9/bimktyvm8 2a;zw o3zu h1pl7/iummeter 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 voltme npqz:j(qhc4)ter is placed in parallel across the resistor only. This network is then connected to ah( zjncq: q4)p 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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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.u/x/ i + plxvy 5zjr0mr2n65cu0, 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 12f z(/wnkocj) 0, 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, 12, q50v lgaxa*m ;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 comtw6-mpux++l os h7 (hdbination 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 combination2zr vab )-ym(l5.rj fi 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 phpoxv,+ i7 mh7mp9.ymarallel 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 combination of /ua r -b2i1evca 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 paralt )+:pu/fgf8*y47,8opp ottkda9jkv djw* v blel 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 as5 ksdwj98qp-u8k9yconnected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the sd 8kss9yq pk5-u 9w8ajame 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 numclw3vt7un lvls +zm*qo)f5nk(v)e50 ber of 100-W light bulbs you can connect in parallel in a 120-0mscn3 o )(lt k7z)nflev 5vlvq5*uw+V circuit 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 -qc o78z77khk; irzlp$\Omega$ 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 .(xrij9 xgvz60 $\Omega$ 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, dun382 5 hofqpand 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 an nd8a)8q/,ha .nbbt jut4,acad 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 97m :-ng ( h pkerup(o30f2glxu :y0sxr.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 and-2uuipa. 3ndm 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 circuz-+ 0 -e6m0yx hrgm5nk hv.fysit 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 throu;tw,x;u .m zgjo3xb9 fgh $R_2$, 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*jce-z6 * m*dv2jbbyqz h, ,vostance of the circuit in Fig. 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in the 1 7w0mk /v rze/.pnfm 0ywjb7 )+oo5nag$\Omega$ 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 currenk /,wvk3w 4fzct 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 ths(w5tsxkfuwmo/u1d p8gt ))7e 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 vtp ; x5ob;fwd+b1 *txpoint A 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 relative to point C in Fi6hqsof j4g.wpa4 m15 j1ce sh+g. 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 kliv(lhl 3l8 2of point D relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery in Fig n+yjd.a )qcc6. 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.,b00mm xt.xmvv 56ycx 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 the1 h bl d4*27 /tkjeu77uanmetd 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 uh5 sy-4ekf9bvb g+y 7the 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 t7j3fry g1qo4 bhe 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 12 4ff6m nc wce:a- lr06h$\Omega$ 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 t jsy).n3:cvrq he 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 lotz mxygl k7y(3wga)+ l 2ag*/nwer left cornermgy l3g+)*akwa2yng zl/t x(7s?

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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 avz6 o;t7gg tu 8pit: gsxhhb/91mh p05re connected in series. The equivalent capacitance of this x1i7bgth0hu8 v5s6m pt oh:gt p /gz;9combination 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 mfsvgo e-k4y9j7(e+ o 50.0 mF capacitors are connected in series across a 12.0-V bame yfo 9s7ejo+4-g vk(ttery. 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 connecpt l :be)5qq2uvxd mhd79g.r1ted in series across a 12.0-V battery. What is the potential difference aqxrh1 bdvd7:tpg elu).2 9 qm5cross 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 q vhl/1jp,k zq))8i q:sxbpf, in series across a 3.0-V battery. What is the voltage azhsp q 1bilv xqqpk,,/):8)fjcross 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 capacito8 kta/,tsiwcvh2 b 0zxkl92l 9r are connected in series across a 3.0-V battery. What is the voltage across the 2.0- s2,kxt8lia0tvc/h z9kl 9w2b mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in parallel across a 24-V ba8;qd0 f( 3yxp. bcffrattery. How much energy is stored in this combination when the capacitors are fullxf;f bydc8p3(.f0ra qy 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 6-7ayevai4xorm a10/v9 xrhl this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangemeara07haixv l 4 r 916-y/ovmxent?

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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 f x2g6o1/uc nzx 8: yf4/elpjmmF are connected in parallel. The combination is then conne /pe 4g8zyjl/o2cxumf:1 n6fx cted 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 and 8.00 mF are connected in parallel. The combinativufo; xsvm po3 e6,:,g-g wr kcz4nc) j21u6rhon is then connected in series with a 12.0-V bs, -,k hromv 6n4u c:)6r1zjp2;xwu c3ovfeg gattery 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 8.00 mF are connected in parallel. The cizi)/3;tpt/ hx l(5m7cjjqiqt mk- y.ombination is then connected in series with a 12.0-V battery ak.y5m7)3qp/ qh(mt tziciil -tx ;j/j nd 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 throug0 hg ;fu:wkigz03:dtkh 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 cha*/s6j ox h2tefrged to 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 series with a 0.50-mF capacitor. The 9ao3jm7:ym g k8 3riwhk(z2ob capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in volj3z mga:i7m(o39 2ko bwrhk8ytage 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 c 7vv13gpk ;2y9i:shco d.j .qk7kpwe vonnected in series with a 3.0 ;w2dp9 kpv:o. 1i.kskj 7vcy qe7g 3hv$M\Omega$ 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 resisb2u;uvh5s6*65cjg lds6spt z7o q y/etance 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 resisgyhsyza0 n ls i g t15+/wte:1*4u7coetance 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 1demc-k u:-ijo: is*h900 $\Omega$ 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 ugqd2t:d-l;g 8g l 4gkt.;cb hresistance 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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