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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 between8 fo.toqoz4)a the terminals of a battery, when no current flows to an external circuit, is referred to aq.oo)8 ztof a4s 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 bev:u :c6luv lmfp:d(39 zj veb(da-ts ;tween the terminals of a battery, when current flows to an external circuit, bz6 l:l df(u cv:s9vptd;meaj-:u 3(vis 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 series to a battq wp+) t3cy+k v4df6ypery

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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 ;whkmpwt 2u 2mrfn6k6bf65x piaq4 **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 ser pxxgq4; +6c*fcouk up09knr) ies to a battery. If the current of 12 A flows from the battery, how much current flows through n*) krkcuc0f p4qupx;9gx+6o 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 t jlt *e,ye,ersboep05/dn vh60n ( it2o a 12-V battery. What is the voltage across any one of the resijl2hb6 eepdte (e,r0 otni 0n*v,s y5/stors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a consta h9jewzc)y7 4vnt voltage source, the power supplied by the so9h jvw4ze) cy7urce

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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 i3yxc*l+yj.r)k fyw6e n 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 /k3 wm6of (zjsbe 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 resistorslcf279k+r39ry: ysjw e oc2pa/0e.jd 8uqjm y are connected in parallel to a 12-V battery. What is the voltage of any one of ty:af2k8cp.ej 2yco/ 93 0ljrejru7 dq+ 9msy whe 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 inh9i fsdvx.a60 parallel to a battery. If the current of 12 A flows from the battery, how much current flows throu0 xf9 .is6hdvagh 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 vnjs7ny5p+c/v1w 7knavy-i; lights are connected in parallel. What nykvavnpn +5s1iyc w;v/-j7 7happens if one lamp 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 parallel to a constant voltage source, the poq;hz6 xt9 y zy-q0ks5cwer supplied by t kxh9yz-syqc;0 56 tqzhe 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 .npej7+ kkw e*R. The maximum power each can dissipate is P. Two of the resistors are connected ipje *k. e7n+wkn 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 junczp7)u(na dxh-gyk 9;wc08 teo m-xxa- lb2.z mtion 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 ru,w-re uv+h9yh2shu 6t le.
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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 x,5))av p2iii-um+3pt ydk xrexample 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 is an erypfwn 1yuaov e1 4i7lt8xvt z0 ;+,v/xample 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 circuit shown*3w* w2fytay2/u+c lnx ,zb ti?


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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 stor0gg-ui3l gbukx:ae* 7age batteries together in series ("+" to "-" to "+" to "-"), and p:xleg7g *ua 0gib- 3kulace them in 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 idenw87y/:vn v1uh-0pnnpi wu9h s8tjn) xtical storage batteries together in series ("+" to "-" to "-" to "+")xn1 h/sj y98)h- puit 0pvnu8:n7wvwn , and place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage ba7.xu vvuw(b*f:zi*ccc) e7; rexge; rtteries together in parallel, and place them in a circuit, the combv x.b7; :*ge )evcx*ec w7uuz crfri;(ination 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 capacitopxdyn*c1 h-f hf *; t *uzr*/qgyh78vars 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 a8n9kx*umcov6 re connected in series, the equivalent capacitance of the combination increa *n8v96kxco muses.

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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 totalst2 (d+x-rgafth ii z3*7fio 0 charge of Q flows from the battery, how much charge does each capacito-dhi o sr3x(2g tfi 7i*a0ftz+r 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 ares x2l6ts+r k)7a,oxdd3ufgc : 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 connected in paral* 3idmo)7jd9o5prjv m w 91-l:vi xmfclel, the equivalent capacitance o7w omc -j :1dm f)9d5volvim3x9j*ripf the combination 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 toc/v fbxl/ p,mn-ymp )9 a battery. If a total ch/ )vcyx fp9mbn-mlp/, arge of Q flows from the battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quandj) z-ypmjrcq2m. ,) atity 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 sert:jdqlcha k e;mn4c+ . :h7ow(ies to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across th.wl7(qehn cd:cmt+ kj4:;ao he 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 series thn;oa;dx -1 irhg9p4uo an ideal battery of constant terminal voltage. Ahp; 1dhru ;4gi-n xoa9t the moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connekl8su*m f2t04.sd-oy2ckleacz-h w( cted in series to an ideal battery of constant terminal voltalw.d oeskc4 u8szlcf-*2m20yth (ak-ge. When this system reaches 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 shoukylczdt 0ko-*tjmh. *0 9j-pxld

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can bea/74f g u8ag1giecfn39y. roe converted to an ammeter 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 pilh 9 )-s3hxhe(h)khe lacing an ammeter in a circuit consisting of one resistor and one batter(xhs ih9hk hhle-)3)e y. 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 resist vr, udy p, 9 (wey6*d+xtz8n(s4jbbayance 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 from a galvanometer, one normally bxya3i 0g qvjb-:fu;1would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series resistancjm dcz(j2z ug+p5;hd4 :8aptse

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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 c n8x(p;k1a te ;:eitrobtained by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit pe8xenr(akitt:; ; 1cas 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,*t8hgkfap,ru6u pv* 7 and a voltmeter is placed in parallel across both thvp76k rtu,pgf ** ah8ue 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 voltm 0zbcn*gop*mt8/c*,fqjuhagp:y.a 4 eter is placed in parallel across the resistor only. This nen8 mujoa.0gctpyfh,z c bg*/q4ap:**twork is then connected to 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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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,ngs3- (p* oyvacr6tjfkw (k63 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 laxeo mz qmsw)1*dxo88/n 81/aojo ,p6.0 $\Omega$ 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, a6xt ji)aostfnimv 1(, h/1v z7j*vzz,nd 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 flowscg g-djhx+f5;o95z cyc 8 t,dm into 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 combin9t tx79i6rsl4o mj qlf4kxx; (a1t -dkation 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 combination of 4.d;5orgbtm8 c;:u 1byrqj, o-b0 $\Omega$, 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 9(y/bqf/fgo7z) 2 r t wd1wcemparallel 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 intki-+e.s- ,*,bzphlqxwj)ulp lvzt(nr l 3h*;o 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 connec70ey q- 1 8somqltt7td 6,izwnted to a 120-V circuit: 1200-W toaster, 650-W coffee pot, tl77n86ztq 1y so,tqi-0we mdand 600-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 bulbs you can connect in parallel inv 9ngqv y(p -ha1x.elu+6 ii2u a 120-V cir.xi gpl 2v1u-e+qv n9hay6ui(cuit 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 2.0wrrg xg(k5ug (d2)9 fns,z4vd $\Omega$ 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 3u xsm)h3:poc 50 $\Omega$ 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, anag8j(fe9,.c5b fdu .jwxo9tk d 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 and 9.0 oi ykl jug3415fpm-8d $\Omega$ 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 and6fmsl3fen 7g9 z11d o 4zqde*k 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 2;)ilm fpqx:p.mq.y- l zpf*i9.0 $\Omega$ 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 in 5v*6/a8ewngasw*zwq5 g8ck / iflnh6 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 throug*xjv z +o2 ye o::bbwwr41pp*bh $R_2$, 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 wgr4famqr9) 90 i -ihkFig. 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. 1dvl ;fg7 l(byc1yyg 6u3+kc:.c*di km9-4, 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 fdwc*2bog2/m 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 thtd(,::y-ps a8;xo8 rwv m z -gd.uffnre 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 r:t (bdshv0si r21i*jto 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 tur3xx 1x1i9 9o3x bafB 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 in Fig. 3b:lu4 h8osw*i wmks: 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.l k:,p d9+fqi;ska /(abrg,cv 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 potentia s wto9b+)fqb)l drop from 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 i b4qtb --iy9xbn the 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+w+w.p v 7fbqcmco( -q 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 curren+t x*gd 0q10 gtnt hv4jzgju1zi*3c;ya py)f, t 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 12x-/gn 1a vmrt8kf u qc5(3o.oq $\Omega$ 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 the 18d:mh1pl 35,feq0 karg $\Omega$ 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 th9af;j 6pb.o5e z4ok xhe upper left and lower left cornokfa9h;x5.po zeb 6j4ers?

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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 conn55zf.xa)mx c2d:dcx u)p 3ehvected in series. The equivalent capacitance of this combinpx) xm52 cfh: v.dzud5 c3ea)xation 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 series .owjjax s6/d33kzh * a(1zbofacross a 12.0-V battery. How much charge is stored in the 5.00-mF capacitokjs xzoh o 3aja*z.f6/31d(wbr?

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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 in series across o0wlc:hxo5 4ra 12.0-V battery. What is the potential difference:o5oxlrhc0 4w 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 bat9p (i:ww-j2l:yw,cu j 4bamgdtery. What is the voltage across the 1.0-mF capacitor?w:9,pld wm 2(uwjcg -:i4jayb

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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 serie0l;xr.ff on5 u,2(q 4kms 4k fdt:tqqrs across a 3.0-V battery. What is the voltage across the 2.0-mF capacif:rt mdrl.kq qko5,sqt ( ;2fu xn044ftor?

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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 iyua su6gz1v9q(h,6yk*m 8i u i+k z/eqn parallel across a 24-V battery. How much energy is stored in this combination wh i(m*8,vkuqk eu1qazu /zhi+9y 6g 6syen the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, anq+jsqy g6q qt88+h.tyd this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance 8q+q+6gq8s yj.yt qthof 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 parallel. The cokw 8yscrxn12 ,mbination is then connected in seriw1r 2 ,xnycks8es 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.a7-jq vdx e mv;6/h:le The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-m/eh7xalq jd-v 6 ev;: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 ):mlp kn* kgejj.nnwu,x 7 b8j7;l3thare connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF jjg7eh8*k j tnnp u.b,;l3l: n k7mw)xcapacitor?

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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 throug/ca (,ch: bcoq7 9v +jp)xu rjovc2f-dh 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 through ahjhr ze .ud163alft)2 $4.0 \times 10^{6} \; \Omega$ 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. ./zql; q4gup8 +l.qpb i h)cgrvd5;yyThe capacitor is initially uncharged. The RC cop.phz di.y; gr+vg)cl5b 8qq4 l/uy ;qmbination 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 connected in se.h. bqxj a.)ew*bx4m lries with a 3.0x.q bw4ae .mh*)l x.bj $M\Omega$ 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 intm+*i5 w-7o j nil te. was0l6befl:gl4ernal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a res(*rc rtjlt6 f06jxt9u:mp k9* u0hirqistance 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 interna1 4z)bug fq8fh,ec3sal 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 millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistance of 40.0 ,9b-,2g:pwhqpszapv qp 0 wb 5$\Omega$ 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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