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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 terminals of a battery, when no cdx* n/4ql.(kv .gq ho(.ei7izipl2pz urrent flows to an external circuit, is rpnx g.(l4h qi.e2 d.* 7(pikz/qvzioleferred 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 terminals of a battery, when cu :eh:gcvd6kyyyd x9 1,rrent flows to anv9:,ykcdy d g6yh:1x e external circuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in ;i-dp3xkj0hc -bqwjr) c0s b (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 in series:od 0yvouc-, p,

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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 levnl q1.cs;; current of 12 A flows from the battery, how much current1 ;nllvc qe;.s 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 conn q1o81i, iest2,fouhvw ps;y8 ected in series to a 12-V battery. What is the voltage across any one of the resist8;8y oev if1u1wqpo ithss,,2ors?

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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 inf6i e.cw5vf:d5q 6b md series to a constant voltage source, the power supplied by the f5cmddfi w6 q6b e.:5vsource

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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 in9c8vwvu k*r82k . v.9 zxsimvk 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 connfzo zbtl,uf :784j h8+o 4qpfcected in parallel, 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 connected in parall4 zaphl30d97j3 wtks t0 vjz*rg93zh uel to a 12-V battery. What is the voltagej*skl03h 0tr 3g73adpvhzztju4 9wz 9 of any one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are conne: nlr 4+z c1luqd-vvi-cted in parallel to a battery. If the current of 12 A flows from the batt-vi lcl1qz-v d:n ur4+ery, 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 congyvnbd;y y3 4m3/so-gnected in parallel. What happens if one lamp burns out? (Assume negligible resistance in theg 3-/nsyo43ybd;gymv 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 uc*t 80u.ve5h fl;olu to a constant voltage source, the power supplied by the sour t ou0he5lufc*u; 8v.lce

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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, eajae2 jna,q;n4 ch of resistance R. The maximum power each can dissipate is,j2na;qj 4ae n 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 -ju uw(bacsee :c m1,1rule.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's lorcx h j jt) bz1w2o;(5+pvsgj:op rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop ruleq2 h 9t2sku9gc 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 rus vou(z c l:+2ht7tr+gle 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 her* 8l 0,kshdouhx g1fa9e 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 ("u5tl e5mq uqi gw6i,3++" to "-" to "+" to "-"), and place them in a cireg5 5t u3m,u6w+qqilicuit, 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 idenm4(mf6lvggwn6t 5 : k)0k9ewjv c,ldb tical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will providec bd j0kflwg6,(4vvt56:n e9mmwlk)g

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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 storhbj x/vexb7/q39yo7g age batteries together in parallel, and place them in a circuit, the combination will proxxqho b79g7y3/ bvj /evide

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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 capacgkxxr7ih:+m p 4b;dr6itors 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 connected in series, the equivalent capgacr70( 8 reqxacitance of the combineqa 7rr0c xg(8ation 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 auki;gjtv m,48.quk 5 sre connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry?;ji58 vk4.ku mq s,tgu

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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 parallel to a battevujmr )oh-* (3y dou-xry,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the equivalent capa /5ipgwvs/-kacitance of the combinatio5-a ksw/pvg i/n 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 parallel to a batteixl6 bj1ytj:vez jvp;1 ;9np3 9 4mhnv6z7p ghry. If a total charge of Q flows from the battery, hoz7 phe3h9vvv pn1tgj4ibj;n6:jlpymz; 9 x 61w 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 R 2ra58cb-bfw8 ouf v)cC?

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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 capacee1wf 6cj 0pyk61x oh;ob0 )gpitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrohb61 yj6o g xc)0ep;0k eow1pfss the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in serirk+eby/ 7eq(v es to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, 7ee(bk +yr/qv 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 seriesik b4+l/8vnyjb4y v, p 67gjer to an ideal battery of constant terminal voltage. When this system reaches its sb48y gv ri,v+ b njep6/jl4k7yteady-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 shoul986y yf) hg*cy8lxr oyd

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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 ammetehn(-xby4i/0 nh (p5q 1zecfz ar by 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 obtained by properly placing an ammeter in )nejo+u9c 6j/ucar1t a circuit consisting of on/tnj9ec)r u1oa c6+uj e 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 resistance of an ammeter qx,; dm.avtgs 5 p3e*;wl8ax:equjd)'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 from a galvanometer, one normally ::5n oa02cds ts* r2 eijvg.mqwould

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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 voltmetxe1 g:vrlh- v9er'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 .zol b0ahf7cw +7uqt -a resistor. What happens to the total current flowing in the circwhc 7a0f.7+t- obzquluit 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 series +-i7k4 cwitba with an ammeter, and a voltmeter is placed in parallel across w7i cktia +-b4both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a v2 f39tb10c*cd ui0myszo, 523 mdsgbqwxin n-oltmeter is placed in parallel across the resistor only. This network is then connected to a battery9-mg,yiun * d02xwb3f2n0sio3b1c5 dsq czmt. 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:m l4nf. i kohk9t34jj.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,kyb;wm-gx t hk9qr8 72vn-fg2 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,hr :l w * xqsrk,bf* ernjb+i+i(k2f)2;dc)bl 12, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows intvh+p994 /x 7 ;.zu ib /ilx4hjmlyx0/xjuwrzeo a series 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 lhgo j20fl3u63.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of h 3w9g d5o ux sn(cjiy.f )tq6ic4i;y;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 4.0nre1q3 9og-1vav.e st $\Omega$, 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 combination of a 4.0+q gxe,vn4ef,n-0 gbf $\Omega$, 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 13fotz-u g5d1ovv . gl)20-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current tgv o. 5v3zdgf o-u)1lwould 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 nuom /70y fhkbv0mber of 100-W light bulbs you can connect in parallel in a 120-V circuit without trip/07v yof0hmkb ping 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 2.04u l0j6rzx p3j $\Omega$ 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 xh. hh- bmtn/)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 kk0npd mn.3dkf ;(2gy10.0 $\Omega$ 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 anf(n)snwt. frxmg;,j,t. 4 8kvny3naed 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 5.0rnvwxr)t t7) t)t c05la* dg-p 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 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0r cu3h0oscm* *n ;xa1j)ie9xr $\Omega$ 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 resistan9:( ddv3 bzul*kousg3ce 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 through3qi s; s m;mqopkshj.ekk9 -y y1:u03 za+0hnd $R_2$, 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 oe)fw z2:o0zv6zki v brn641 ithe 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 w55szyz2 ki9:fzprxid+ 8 /yfthe 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. 39i,fe8yibj 3 fm2lau19-4, determine 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. 1-dy r2aojrb83 .qf4kc 9-4, determine 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 pog ev )yq-pnt7.qve y,,kjxa*+ int 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 poi sl6ad qg 3 ++srub03o twp/sowa6x:-knt B 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 C ju/0d+tl ky)ew m4v2d 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. 1 hrt-us(4eu8 t (9bhvxhsw2rt 5or +ci ne8/6l9-5?


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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 from6fr lc4m,hz p- (q rbdwbd:z51 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 the 7l5. jt 5m wt9zjucqb. jd4,)um $\Omega$ 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 the5aez4*ky :l. 5/czfz an iqc*b 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 iquj, kvavq. x3(0+zd in the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the gt9cu/n) gca (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 iih: o-raue5)cn 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 connecti p6dp1+yzq 2lz t.f2mrng the upper left and lower left corp1rd.pzml yf 622tqz +ners?

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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 connectedd f;s nl)o .ib-*nm0d0m+zw lw in series. The equivalent capacitance of this combination is0* wwnb+ mi)dn-ozdl m. ls;f0

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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 series across a 12.7 u( 27-uhbt 5essxxcn0-V battery. How much charge isthneu 5s7sx- 7(2uxbc 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 i gtdd q8yt8o(9bycx;( n series across a 12.0-V battery. What is the potential differenc;cbdq8dyg(yo9t t8( xe 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 3.0-V battz j/aefh7gh. 4ery. What is the voltage across the 1.f/ ghz.h jea740-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 se8pw7m0mu ;+ au dique0k-3j pqries across a 3.0-V battery. What is the voltage across the 2.0-mF capacit qda q30 -u pm087pie;uj+wmkuor?

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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 ntk c,tw:)ibu4e-+2 daml 0 vgparallel across a 24-V battery. How much energy is stored in this combination when the cgu2le)i -cm t,k t+bd:4nva0wapacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and this pairzx 3edmr6k4t ppr9 8-h is then connected in series with a 30-mF capacitor. What is the equivalent capacitanchdexr 63r-t8mk9p4 zpe 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/ctt djc/4( /uk6hwnh parallel. The combination is then connected in series with a 12.0-V battery and a tnkhh/ //46tjw(c cdu 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 combinati8l j9yx3xu c8con is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. Whaucyxjx 388 lc9t 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 an(,f xyjx52r */d5foj *gjtbnxd 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V batt 5trfx5n bo(*jfxd*gjy2 , x/jery 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 tx / .jwhc ;yhq7o3vum bncejoj*( n2-(hrough 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 discharged thrsjboylz d 8r:8;7c2gw ough 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 cac:s 7c da,::-o a3j,gxaewioypacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltaa7c oja :ae:3,ogiwd xcy,s-:ge 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 serie) tw q0zju w 2l)nbs,(bla( ;bsm/vpy.s with a 3.lbnbt(z ql),s pvb(u02y. ;wj)/aws m0 $M\Omega$ 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 resisur1bmuy:liuj. +7/ nj tance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resistance of 24 +p ,pn+4lta:y-htfx:qm+ zc q.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 ret zk/ kydni2:p2xah:oxap e ,6 dt)*tr;l56rq sistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistanc -s60oept gk8gfb vtao-4wl z908bx+fe 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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