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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 ofgeer a,2)l6yxzc/ :xa 4 nprrko n.l;/ a battery, when no current flows to an external2x/ 6.le:4 agpnl )rka,yorz /;r ncex circuit, 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 *e7soe0 v ;kwx5s4) txps kxg9current flows to an external circuit, i5xoek9e*)74x;k s0 gtpss vx ws 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 c tv8qr*jpc*dmh(1 bc46zla7ay5ie+u onnected 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 connected in 6*x6t9uhf7p nv5b )rk3 uhrkoseries,

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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 th. q * 0))cxzb:afnjpeje current of 12 A flows from the ba)).nqj x zec:0f*pj battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V batts(/k ;stn eee.:tvc/; w*thqfery. What is the voltage across any oket. e(c :fe/s;nwv/t*ht q; sne of the resistors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, the po4:gs p9:wsp8 )j h2.tum tqdgjwer supplied by the qhjts) tp:.uj8wgsg p9:4 2dmsource

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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 ib.ko 7c+guh1 xn 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, wod*, c csg9iivxvx58 (e 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 parallel to a 12-V batter (o3l y/hh1jhuq2ivj8 v09a zcy. What is the voltage of any one of the resiz1j8l 0vhhqh 9/aovu2jicy (3stors?

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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 to a battery. ,1 1t oph4bk)p lbjc0mIf the current of 12 A flows from the battery, how much current flows through any one of tbmhk 1pltp4c, o0jb1)he 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 co bdjy()kn7(t)jt;pgtp1l q-ojv )a.i nnected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the la-yo pd (an7jjlqb;i)pg )kjvt1t.)(tmps.)

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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 adfxl3mfs8mh e+2yiek 9/ -*i cfded in parallel to a constant voltage source, the power supplied by the sourck /ymfelf-8h *9fix2+ 3semi ce

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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, e4fjoad sm (i 4eg554agach of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a adfo4eigj5a ( 5gsm44third 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 juncti5th3 7 q2tcbq jr ukccgx:.w02on 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( kub;m8fjff/ 36lmqs 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 rule is an example oeiu;l l3;*s k.ihj0b0wi zru:f

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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 exbxlal)g32a 3 ui cuc(8ample 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 ofcrvpj;9bgx9 lv3+o ux52m)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 batteries76z+ on.2cwiesd u.+tfw p9m n together in series ("+" to "-" to "+" to "-"), and place 2znwc6 w.tsp.+umio 7 + dnfe9them 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 identical storage batteries together-96 sj fry3j5cax0om b in series ("+" to "-" to "-" to "+"), and place them in 9srjx a bm6y3fo-cj 05a 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 batteries together in parallel, andha knf yp7:n.h07 qe9w.ctth0 aa1w 5d place them in a faw7h1w.nd neaakh0 5.t 7y9pc0ht:q circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in series to a batyi5nq d1d9je. tery,

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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, th;n;wo, loha-j e equivalent capacitance of the combij-;hlwa oo;,nnation 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 connect z/( jd,d60rq)n:hqop4t yvrsed in series to a battery. If a total charge of Q flows from the battery, how much charge doeq6 4 shpdj ozt(/nd) r0,:yvrqs 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 connec;u;dfygy *nnl1lv2n/ ted 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 parw* 4:f / qnfd*jtxipviac(15k allel, the equivalent capacitance of the combintx/4 cq(:jv fpiink 1*d*af5 wation increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacait oe,:rsstu 5r9s27 itors are connected in parallel to a battery. If a total charge of Q flows fromrote 75s2s,ua:ist9 r 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 quzt:g;,riuu,a antity 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 ba+3r/cxy/e9nwd i 3 +azxyo)nq) hume3 ttery of constant terminal voltage. At the moment contact is ma ) eno)/ /zn3xariu+dy ychm339 qw+exde 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 to an ideal batter(p rki6 ,(8 it y zg3lek;cqs+,q9jsqry of constant terminal voltage. At the moment contact is made with the battery, the i, qqes3g(jz ;y8rkk+sti96 (lcp,rq 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 capaci9l3dyb2(x wsc j8m(s wtor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state,8 (lwwxy bs3d9mj2sc ( 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 shoull jdw 58q8s-zuv s96kfd

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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 am*/qf k rr4el;/ p:vrqmmeter 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 ammetom xc9 mk.7j*y addtn/0+n(ager in a circuit consisting of one resistor and o.(*a x79gd+nkn0cjam ydom / tne 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 i/-leshut tirpl *;53ao/)x dnt 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 woq;tgs* 7 a*gvxuld

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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 resistarn o:zylg+:9f4ksej4ve 5 wf ;nce

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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 kg t9 xd6e0jy8:.oadda voltmeter across a resistor. What happens to the total current flowing in the circua 9td68eox:yddg k. j0it 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 with an ammeter, and a voltmeter61d f w xhkq;uh- fwx,glt;q:+ is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery.h :1x th wlfxf6-,gqdkqu;; w+ 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 wiorj (c;0th:tydn p6.8kn2wg2a .j mbkth an ammeter, 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 reading by the ammeter reading, t8nya0jj(2hn.o: g.btp tc k k26wdm;rhe 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,g ;)*z4do5e)e ocwzf j 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 1 at*e52tkj1poq j 0(zaugj,m)2, 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,u.lyk(/id3 pg.lftgf sc0q8 ( 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 2xqntbzkwk a2i g,2 j9cr+4f( 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 mny3rjwora o gg4y,ysx:+b ik 2:,o;6combination 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 ap*di )mph.+k into a parallel 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 a 4.0 oh7zdo.d / xm u13-yax$\Omega$, 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 combv b-9s38, w9/ bqscbj hac2uawination 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 connectedjq/yc n n d. /1br5vq6sju(ap* to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. qcd /(qp16rv5yj sjun/*.a nb 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 nq 2dtcnfhpht-/039i uumber of 100-W light bulbs you can connect in parallel in a 120-Vpd3utq9h 2-n/ift0 hc 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;8q6 9jd:ldvtff d 3jjfuun)7 $\Omega$ 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 xd9pp837g 5zn9y 1+ olz.intdr2z5tqv fqan0and 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10.6i/epi3 1rz0(lgo yf e0 $\Omega$ 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 f.fba(lc kb0ctu2n,:d 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 9.0r gg:ji8 gw3.3kpfgj t7v90fh $\Omega$ 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 an.. igc9eqob+yc3 vn5c+1kuj d d 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 circuit zf, x+jnm+1nrin 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*7h if+ii.mto+y k,b ah $R_2$, 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;pi .gu odf4msoku80s/ d3g) e 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 thtplm5 ejk*.v az)8,tm e 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, va6fv,m r*w nmwr8e45determine 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, de8qgsy j(w+2ipd,hb- utermine 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 p-oldb r/sp 49 .bxiuk33u s0uboint 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 t8j;hy9abq;*(hv 9cj tvxsn+go 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 rela49ebhu9gc xvae s(f38tive 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. 19-5 ,sdgg(tov u;rm u ,h(7k.pwf-?


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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 d/xuvd7u v-.q1s1 yzgt8kq h:ta19aqto 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 7 .mz8t fj3 yysv1 n-w6*e-ws rmzu5.al$\Omega$ 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 inc h+ i-z2mn5ck 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 int29.n+9yi esqo1sstn 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 ,t (y gb.*n(t snm/f*opkm7gq:qnbs ;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 the6u5jey um2hj8 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 s iug:h9 jt+js6(cz ccnt81 z:wolid wire connecting the upper left and lower left corneg t1scw zjtzhuj9(8n+i6cc ::rs?

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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 seriesk b)1mf;jh0verl w 2l/. The equivalent capacitance of this c;wk/2l fl)r1mv0 ehjbombination 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 i6tgw mdj0b e6u)d7r i1n series across a 12.0-V battery. How much charge is stored in the 5.00-mF capacito6b t0r1egd ) i7dmwju6r?

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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 capacito15 gr (wirvdyi96w*u frs are connected in series across a 12.0-V battery. What is the poten*wrigi1v(6 wu5 9yrfdtial 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 3.0pz gz6xcsbai/t5bx +kiq7 / 1+-V battery. 67pz/xbk i a 1+ctqxig/s+ zb5 What is the voltage across 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 capacitor are connected i rh- 9vq3boqt dz0gi,,n series across a 3.0-V battery. 0g , 39zqitb hdorv-,qWhat is the voltage across the 2.0-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 p306i a3j nonf;fgq-e1swkw0 -.qn0(qsn ocv mF capacitors are connected in parallel across a 24-V battery. How much energy is 3n(wo ive wo-fq3 q0pjsgc0snfn6-0.;1nkaq stored in this combination when 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, and thk799.7rc43oi pohkzlev /g ihis pair is then conc9k/z kr97liv7ieohp 3oh4.gnected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The8svo1 ux -rw0d combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitorw0d1 s8 ox-urv. 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. piz9 x3a.nnf7 ra-y- q The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge onyn-znraf7x9-i3 .qa p 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 /f knf8q;slh2vh:c5e . The combination is thenhs /8efhvkc;:ln 5 2fq connected in series with a 12.0-V battery 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 chargedp)q0ap0 ob4gqrfk379oo2qo qq, fj v6 through a 50 $k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is char 1y-1 uhsxw0xsged 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. Th: 97 krva0dipc)rj4p ee capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the 4:)pvjr 0eprck i7 9dachange 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-Va- 0c9f3oey dy. It is then connected in series with a 3.y0 coa 3y9-dfe0 $M\Omega$ 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 interna,(dhxxkg-3e(a0ci mtl 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 resistance o ykzrpdy6 fa3r903uy( f 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 resistantya-(d.- d 2l1-2k0wmeg ;v yernkl tuce 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 resid v-ue7 /lka-i89*v vypx 1bhqstance 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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