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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 termin3,qa;0 c )fh1nlv yp3zqm lfs5als of a battery, when no current flows to an external circuit, is 3;ahfynv5 qf q10zllm, sp3)creferred 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 current flows aalo+ k-y )s k(1fi2stto an external circuit, is referred to as toy)t(2ski1l+saa -k fhe

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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 batte9d*5 pe6jvwbary

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are conn-c-idn (c,.n pdq mf;nected in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a batterym3o;sa hf/g ;hib:t)l. If the current of 12 A flows frohgt ofil ;h /a3:b)s;mm the 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 seriei)t3n i kkll12s to a 12-V battery. What is the voltage across any one of the k1)t3ikni l2lresistors?

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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 power qs * zyb8vxj+;supplied b x;j*8bvz q+ysy the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in parallel t9 dkq kqfyl9( a d-y(scat5-q(o 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 /p,aj1oqel5 hig*.nd 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 resijs7l/zen 08n2;o efl olq1jm5stors are connected in parallel to a 12-V battery. What is the voltage o7 fojoll;msnqn0 2l/z5e1j8 ef 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 connected in parallel to a batte/-rc *hz hqzi3(rd 8atd lb7/93jlgdiry. If the current of 12 A flowstgbl -37diil rz9/qj*38 z/d chadrh( from the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connected in par5re/)7xp u zqrallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)/pr5u rex zq7)

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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 paralle7hw cjd1 ny;-hl to a constant voltage source, the power suppl;hj y-7chd1wn ied 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 resistors, each of re a l-xbk9haix.a)a d18sistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is coa8ix. hlaa-a91db k)xnnected 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 junctifo q0rwjtn+7fn;/h g6on 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,(uqfbz )( edx 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 exammsqkq /h; o33dj(ma /(kr qyz.ple 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-l x6pz*4r c1z2wmu k 01zrhgl 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 hm0m8,9rp n wsevr)0c jompm*tuo 7z )1w1 min:ere 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 ("+"f,la nkr: zw7kqd u;66 to "-" to "+" to "-"), and p kd na;ru7: k6w6qfl,zlace 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 identical storage batte2rc4.k hozsf k6; xek2ries together in series ("+" to "-" to "-" to "+"), and place them inc 62kr.4hkksx;2o ez f 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 batteries together in para rdkkif :..zy-llel, and place them in a circuit, rydkf.zi.-:k 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 arz ( zk-.tfws5zcz,lt1e 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 capacitancesc bap vusje,-x*m4f /go.2y 8 of the co-j,2o s8vgma/ ues*4.fpb xcymbination 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 in series to a battpiykvtpz) 5ws qff/3 /c)1n3m.f(hpkery. If a total charge of Q flows from the battery, how much ckhpk5/ v/)c.fiyqm1zt3pfsf) pw(n 3harge 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 battery /qt f69l12qts 4qodon,

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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 equivala5e,5uu3 x0/l *+3bru b hifscck e puy:awm2)ent capacitance of the combination increases+ ,lfe) u5 euu*xcc3k0ama2uirws h 3b5y:/bp.

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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 uq+pwb24 n9x cj5q 2buconnected in parallel to a battery. If a total charw2j 4bpunu+xcb52 qq9ge 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 quantiu58uop ).g iwcty 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 batte6ogi gymris3 b7sd 9d:,yt,/ mruge36ry of constant terminal voltage. At the moment contact is made with the battery, the vo i g b3ro9s ,r73u ys:,mgedy/gtdm6i6ltage 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 ide40oep si3v-rfb /b.a0:c fsu nal battery of constant terminal voltage. At the moment contact is madecps0sbevfb-.a ifr/n3 o04 u: 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 ideapihn+g: +0 )g//abacst 6cjpml battery of constant terminal voltage. When this system reaches its steady-state, the voltage acrossgja i s+bmt p/+6:)nc0hag c/p 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 shoul.:tv f5p e ilc8wqdc54kb .su4d

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be converted to an ammeter by the addition osi t4j4c ui/fogz9 2-bf 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 andvapktg5xz4 sg)-r/ ( ammeter in a circuit consisting of one resistor and one battery. A tkzs(5gv xp/)-4gd ras 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 resistl.x,o8q * eoyrance 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 n* lh fzq)iv ind7-0 j2 ptgy.)kuieg(7i-y +dlormally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resisdza) 7fr 0oo bz(tp6 i-gq6q*ztance of a voltmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtainja 6*m 6g5+2y mg8owlfa89f udgq/pyced by placing a voltmeter across a resistor. What happens to the total current flowing in the circu9gf6m 8+qp*lau5coj 8w fmd g/a yy26git 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 serieskdh bm ids,i4*k32b 3pv6iz:d with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by divi6kv zsd 3p2,k:b3iim*4i dhbdding 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 wireys/ dp02 +z1b mc 7ln3n7nbcycd in series with 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 resiz pb7dm 7ycy/21c03sblcn+n nstance by dividing the voltmeter reading by the ammeter reading, the value obtained

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

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, and 4.0 zqk iu,v:89b q$\Omega$ 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 p;8,gm ozx3bw2, 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, and *c/ o- molyri:e;wh:e6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination q1k1bo8hlnu( 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 3bzqqno 5g 50d0.bi2d) ryif+e.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 4.0932eyiqe5 d5;hj bcld $\Omega$, 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 4qsp8 7-dib: nw.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a paral/y60 x-pa qsxelel 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 a 120-V cii5acda u01 rua c3tu/ r1-ggi*rcuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total currera5d0tciu - a1uia /*gucg 1r3nt 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 10ye5irsq woe)t5n7dq.4r*,ev zyy*0p 0-W light bulbs you can connect in parallel in a 120-V circuit without t iry,e*0 vyqpe )w7otnzredq5*s4y5 . ripping 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 2.0kzf*7qvwmnsi q6 j* aqy8 y6 x-9e5k:n $\Omega$ 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 qov:y/7r:, q tvd7k ht$\Omega$ 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.yf: igq)/ t zmaic-y4.0 $\Omega$ 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 zcm2a8lnvni4l/l j x;e;lr*99.0 $\Omega$ 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 3ha2 cr wu3fhj4-fn.e 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 anz5v c fmc;k c-poj91i4d 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 in Fig1),.pft6vlix + y.rb 7 euetzi. 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 througph5tbt) -,z z44gewvf h $R_2$, 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 Fbva p )zgfo8 ,,4a f+xfo*l(lxig. 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 currenlzw 1i/j))pes hgbe .(t 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 the a8hfxj; :cbb) 8 zz3obcurrent 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 j9 yn g4xa;i;:ikr: sy( 5xsahin 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 x.gqlswk8 ,0p)(xiuy point 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 po) wrdm6o *tv3fint 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 in fbrjwil 7*3q* 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 iiir8v1l 7m 8 g;0hvfqtn Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to /9vy qqjss8yei,* 5t spoint 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,b li2gw:3xxtgm)sa y4ka s0- 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 th,lagmouzsr w; a08 0j-e 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 .g(bz/altgxrh d.uck4c f-+: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 ing(m,(p k )orcd 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)detr /3wpy.d yo34sev9wmc;m t e: m8 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 so7sdg) z asf9j;lid wire connecting the upper left and lower left corngd7sf z9saj);ers?

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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 serieyvh6:yt+hs-fu 1pr2w s. The equivalent capacitance of this co+yhu:-yphwrt6s21f vmbination 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 ca6 330.wvx1x:9y(gl8 1y p4fuon uvslufnfgk kpacitors are connected in series across a 12.0-V battery. How much charge is stored in the 59wlufn1ol133svp6 fu840gyk(n x:x vu.fk yg .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 in series acrsto;heodz;;d6jo hsn v7k 2(5oss a 12.0-V battery. What is the potential difference across the 10.0-mF ;dzj2 st;o hok(en d56vh;o7s 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 seri o /pa*,yqqe4ues across a 3.0-V battery. What is the voltage across /u 4o qpaq,ey*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 in series acrosm zz-s89l;fxbcz wb.gg hl :f* f8cn.+s a 3.0-V battery. What isxbz c ngsh lz89 -.cf8fb:z*.wgf;+ml 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 mF capacitors are connected in parallv1j i.u4c6b2 fpwsag.el across a 24-V battery. How much energy is stored in this combinationc41bs gipa2j v u.f.6w 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 parallqh/,qt)/ h rl,dqth8hel, and this pair is then co dhq )/,tl8h/rhh,q qtnnected 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 8.1mjk jt9ahyzgtfv-p(j:2) j)1 v-m tu00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery-fjt) (j-g :)hmyutvj1m t1p9 2jvakz 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 8.04h ppvy dx. zf/l ynwpx045+-b0 mF are connected in parallel. The combination is then connected in sh/ ylzpn44+bvydpp x5f.- x w0eries with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combinati*cql:27 + th6 poifswwd35kodon is then l5c6*hdf okoww2p+q7d:3itsconnected 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 charged througy m3u/og)jo0 +*uzba q pfmsb(q 6.cb+h 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 char7pf2*rqow 8h wged 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 connect( bw-psg4l qcul1 b36ied in series 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 chanl64-3s pl b(1gb iuqcwge 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 series )c.u):3cn7t*2 87 ghus-9lbmvw drhiet p g xkwith a 3.0 9m rsvwkg 83pue7b7ugxl-hc2: c.)*t n)t idh$M\Omega$ 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 resiib w (lmf1--zl9jjh9d dqgdh(9bv )0qstance 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 ofxkcv 3 y4:tj4g 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 intrlbaj7kvh el s 98ji/ x2d) s,4me6h/z)a*zcternal 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 coilq+gpwi a f69p5 resistance 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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