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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 terminalsdp4y7xt+, km tjzhav6 2u(9q)z g4qea of a battery, when no current flows to an external circuitjz4kyqv )tt(2adxg,e um+ 9z6q p7 h4a, 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 between the terminals of a battery, when current3;af1l* ul rff flows to an external circuit3ra f;1ffll* u, 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 seriescvh j-.ttm/*i zy;m m1 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 conn0n2 p4jcd jdf*ected 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 sfkks(:yb ;0fdmo+vr5b9w lyez1 /9z zeries to a battery. If the current of 12 A flows from the battery, how much current flows through any one of thes9bzf/orwkzy0 :v591zlfebmk; d(+y 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 connecdr 56jz./fzuf sff(/vted in series to a 12-V battery. What is the voltage across any one of the resistof/s.zdffzu r6fv j5( /rs?

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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 constant v ovl3ydyw tw4f, 3lub4x97n( roltage source, the power supplied by the 7wlyt bdow3,9 y(lv43ux4nrf 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 pfg9vq 8h8 t+ -an5bu6tbm-os3 oxzs*y8i/d vfarallel 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 -fzq 5oz8ffbol1)m rgn 5:rax5b2on/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 paraixucy(,1.i ,t 4 mnbbm -h5g wemmtg;:llel to a 12-V battery. What is the voltage of any one of the resisxnmm ght,w;5im.- b,m :(1 igt4 ecuybtors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel r(dk+2u yqgj wkn 0d ui/g;03. an)gntto a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resdn+ ngt );k0dy.i(/2 uqr 3g0jnuw agkistors?

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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 connectxq 07dbk /3 h am-lzc9dnl1 c3ya4cwm0oe40azed in parallel. What happens if one lamp burns out? (Assum-zahq90a 0d31om4abec4lz w7cy 3 / kn0xlmdce 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 sourcrr:*wpf:a3l qe, the power suppl*l:pa q:wrfr 3ied by 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 resisto9kujqgi9 :g.zrs, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in seri9k: 9zigjg.uq es, 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 juncti; u 0sytgialh+:;r(tu l; pugd wc25u,on 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 68j p*csn7gs grule.
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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 ofaazpd0dbk( 9g 4f 53p 5o*q2xwgd ,hca

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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 examp3k)f: wdsbr 6mle 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 a* 3n 9v;qexkohere 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 idbm-, jti5bc :jentical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a cb ,c-tbm5j ji:ircuit, 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 serix8rg* gfr; h-ees ("+" to "-" to "-" to "+"), and place them in a circuit, the h*frgr e;- gx8combination 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 storanqswoinhg x*4e1j-bhhz+6 -r +vz:9s ge batteries together in parallel, and place them in a circuit, the combination will-ei:b ow9 +sh6nsgjzh-xvnr*1 z +4hq 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 ewm yl0x nzcr2r0tx6zhwbi8t 8q ,+ yxn /(k:0connected 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 equivt)wculcx,; n 9alent capacitance of the combina;cuc l)tn xw9,tion 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 are connected inl,pq:6aqa: dk series to a battery. If a total charge of Q flows from the battery, how much charg6pd, l:qqaa:ke 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 connected in parallel to a batteryo:jxtkz- 20yc37pdr i,

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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 equivalenm(op vvtw8l+c4ljb* xmk 3,)it capacitance of the combination inc3 j)+48m oltcb*px vk(,mvwl ireases.

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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)lv13lnn)p f0ki l, zc)(lbox in parallel to a battery. If a total charge of Q flows from the battery, hi)zvllkx nl(lb0fn)p,1 )c o3ow 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 quant5i:xg gi5ug; 9 ccyx02mj gy rhk4s.r3ity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery j15l+nj0k. wdmo x8tbof constant terminal voltage.t5wb ojkjl.1 8x+n0dm At the moment contact is made with the 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 connected in series(f0le x75s *x ,np2stagx ,uss to an ideal battery of constant terminal voltage7lxgt,5 s* s0x axse,2sunpf(. At 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 connected in series to an :k+w *ge2r 1k3qtg e)ay0b+1k5iqxjrspb6yzideal battery of constant t3ktg 0 erb b*srw+5x+ q:ze2ykkag6qi 1p)yj1erminal voltage. 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 shouluw j-u+erl :; 23h. qfzhbe(gpd

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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 convel5(2 )p;y, obb hglkhmrted 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 obtaic;nr60vvhl jg8 7sut7 ql(8rbned by properly placing an ammeter in a circuit consisting of one re c; j8(sl0 urqt8lb6vr ngv7h7sistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shu) -oh :mx3ky8mz(y6p q-)s(wfi scc+en t*vvant 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 normal: gd(h+:o w8r3ucc lqjly 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's d,vr*0zai(sx 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 gudqh 2 d n.)tb0pzbm ,.lwhhc-6w3d.obtained by placing a voltmeter across a resistor. What happens to the totapwl.. 0uqh2ghz d- m)b6 b d,wdct.3hnl current 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 wixykyj;. 3p; v,..hs jm wqz)gzred in series with an ammeter, and a voltmeter is placed in parallel across both th.;v3 ,jmy)j whg sqzpx;z.y .ke 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- d0 eg(pt iwo6vi9;2egma2wr, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reaw g-e9eg6t r2od(a;iv0 ip2mw ding by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, andt5o+-d*kxs+g-t p tu y 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, 12x,krp:ce;e k 2, 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,pwe -4 -n7 h(6icsda7d odp-yt 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 into a seruc 2gnf4:yr f9 (cuv:iies 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 x0ee frknz- tec2/ 3s+cw5)ofinto a series combination 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 comq;r *-z da6fcuw9*isb bination 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 a 4.onr ):obq4b9 m0 $\Omega$, 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 parall:fsl o )f4h4v f.qy svo6.aj;xel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to aa pc (a+e7 xt)yv.9sfn 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what f(+s9xyvn p)t. ea7ac 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 co. de8pd(*la ponnect in parallel in a 120-V circuit without tripping a(*8p.eda do lp 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 2.0e(6 8oko3fy fm $\Omega$ 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 30 5yuowy -l* bp4zk8aq:$\Omega$ 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 4.0ltmv8xfumcgs 0vh ( lr(b- /**, 6.0, and 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 a,4 gb4 ue ppqc02g;gfond 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 5.0n o6t,fj4,z x,)vwe0yqwbl0k 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 5.0c kbir u h3i9743ki+dqak+/qr 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 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 b7y)jbzlxtwa e*+; y0 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 throul;xuvt ,f,,x9jcpq: yv8 fs r*gh $R_2$, 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 thudii 9b7 gw1fmz )h5ydxr+8p19 )ehjke 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, dete6q7a,kyh: o1jthr z -mrmine 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. 19c q6-mp md(ld5-4, 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. 19-4, detb/nkcbk;1n- / yz 3edvermine 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 point A relative to poikib:vsk2 fwva 5b-u -8nt 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 .pn9 .toki;vw*+fgt uin 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 Fij ux+ 6xiydhy/ tq+,z3g. 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.gvtq:* iq:i4ha-jh 8r 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 frob6;:b; p tx w84;zy1m:j yptvo+xdk ojm 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 h4h8adffg93-y+gy n*. lorthy3k: bin 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 curren8 )wsytd* bw:xt in 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 in7j:vo dy jo94. sbvf.r 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 invyl0.,6mm xj p 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 the 18+ d*pzcfzgb/3 $\Omega$ 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 lef*,y k9 ,awtzsc s-tz,ot and lower left coowsc,ak tz9 ,*-,ysztrners?

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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 :vnbdc m3ge i;hvw67+series. The equivalent capacitance of this com6c3gwdh+nbv i7e: v;mbination 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 pf)7xf, b zp:wacc)/sin series across a 12.0-V battery. How much charge is st,7cf / a zwxpbcf)p:)sored 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 rhjx i ::xtpc.l93c .38toeyc.0 mF capacitors are connected in series across a 12.0-V battery. What is the potentialx ccyjiotecr9xp3.:.8 :3tlh difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V batteybt46; -b az)0zc aaxu0hxqj;ry. What is the voltage across the 1.0-mF capaczu0a;bazx j) ya0 b 4;xh-ct6qitor?

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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 seriestyi)74,(lj d-g cki a:eip 1r7- tevsm across a 3.0-V battery. What is the voltage across the 2.0-mFktldm-47v1 yci7 i( ipjgaer) ,ts-:e 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 m)yt6,u lh6e+az6cnsx6r*h xod,n j. 24-V battery. How much energy is stored in this combination when the capacitors are fully charged?6j d)aomcyxx6n.+s le ,u,t*z6 n6h hr

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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, 9y.q4rl h ndbvap y4o ;v,r5r(and this pair is then connected in series with a 30-mF capacitor. What rr.y l5nrb, ;pvvh4( 4qo9ya dis 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 mF andy;k* 0wq;ihe e 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V bw;0k ieh;q *yeattery 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 ) ypl 4n:ra eo-dg1d1ymF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is tdyl- o d1pn41 ergy):ahe 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. Theny*e(*t d4tp 7qz sgrf236wqp combination is then connected in series with a 12.0-V batte 7zpndr6ttp (q3y2fsg*q*w e 4ry 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 throug/b m3 s9 -6ugfvf;iwbmh 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 charged69sa oqpdno;ebmr1 +9 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 sr7 fe q*9f hy5h-tnlljk h6:d;7zr/zjy. rkt9eries 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 voltarkenk9 t/6l*;hd5 qrj7f9z y frhhj7z.yl:t-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 cw5dmy2u *zcy.)p .exa0k z/z 36qyaoc onnected in series with a 3.0 6 z aax2 y c qzoc3uk.)ez5wm*.0/pyyd$M\Omega$ 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 8oij5ghe,8ex c,5 gou /y: pciof 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 cg nbw r*gq 46*wi py+9w)yl2nroil with a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internals x)hbxfa g056 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 resis 41+ apqlpkm*s/* djd)x:cp sitance 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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