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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 differdy)r8p: ::q s+tk xgs7:h8nhrg4nnb eence between the terminals of a battery, when no current flows to an external circuit, is referred to an )rsh:xkn+ rqgpdb:yte 74hg8n:: 8ss 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 fladp (j3 6 qc/x-yj2natows to an external circuit, is referredt3 a6-qdjcy2paj /xn( 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 connectp)j e2h+uus :r,w+ uuhed 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 hwyfrt2d ,9kd(i+ ea0 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 resiqmpdji4 auarwi nrzzmx8;)ba5 +7e v 4s.00j)stors are connected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any oneam8x;0 qj)wu r7.5 )z4apr+s04izn eivb mdaj 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 battery. Wh gc2 .(uq zyt/wf;)s:wrq- )vs)nslciat is the voltage asrsni) wt ls.(y/c 2c: v)f)g-uwqzq; cross any one 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 seri qr6rmtya/7 :nd/r lqp2;yx. qes to a constant voltage source, the power supplied bl:7/dr 2/ qxm.rqt6p;arn yqy y 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 m .)n 9oxijju/pk)ss: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 cij)f y:xk 1ao/ l*d+rnht;2xparallel, 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 parall9-j sq njre2 a(kcsy8gfn)i 77el to a 12-V battery. What is the voltage of any( 8jgrske2 7 7a s)fjn9ncyqi- 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 battery. If the c6rr)w*q: 8*hsq t rkhz+gx7 8iq ;ecicurrent o8cxerzt )q*wc; 67is+i:h8rqr hg *qk f 12 A flows 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 trvh )c+/jt cqxbybz.x 9t,8 l/)) zjiygee lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in tjcj)/ z9b)ctx+x g/ vylhb) ,i8qyz .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 bnk ktj hdum3 0ku36 (34va3x ju3xq6jadded in parallel to a constant voltage source, the power supplied by the souu3vj k a33ujx0tbxnjdkhu3( k 4m636qrce

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identicalf- ifol1wn-b k.v.-gl resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. Wn -gl .bowki 1--.vlffhat is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junction rule6 v 3+sasmhl2yj-0 vdd.
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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 xk s6l8n0h -kyrule.
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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 ex3p f4f(bsi) 3xfjy; o6 gip(byample 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 ix 5b63s wykv:es 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 hnybi(3hm:u wj ;r0j.5j;t blhere 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 sg,lyo1g5 eaa3torage batteries together in series ("+" to "-" to "+ygo,5 la3e ga1" to "-"), and place 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 batte.oh s9m+w(x lxries together in series ("+" to "-" to (lo+x.9m hw sx"-" to "+"), 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 batteries together ilb.4 qa9b0cdz b9:)ypvp- l wee t-wo)n parallel, and place th q4zb: do lelwpce v9b0).ay)-p tw-b9em in a 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 , yq-kvcsm 8v;vv q b/eyr3:d-o8u8twconnected 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 capacito.la*yp4y f nw7rs are connected in series, the equivalent capacitance of the combination increases.y 7y*pwl4n a.f

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitorw n sk4j)nzn4wi 39ufup n9vrus;5a 2c442oses are connected in series to a battery. If a total charge of Q flow9cuk4j npun9nsfwoa3 2n2u;v4s )swze i544r s from the battery, how much charge 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 ba+eniz b90bam3 ttery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel, the equivalent capaciel;sdkt*a d 4,tance of the combination ieat s;*dd4k l,ncreases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery. If sugacj/a-ho ,2ljo17 a total charge of Q flows from the battery, how much charge does each cap gh,/coas1a u-jj 2lo7acitor 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 quauk/n gv6q;)wr .lu1a bntity 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 r:u8rhwgf j2cpt lp h30m1e/zu6o+3dof constant terminal v302uod elzc/p6rw fpt13: hugjm r8h+oltage. 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 ims6 )g;tzc f k5;;uxain series to an ideal battery of constant terminal voltage. At the moment contact is made with the batt)szg5fmc;u ;kx; 6ait ery, 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 ide+r. ni:cqbh:)zh t;fial battery of constant terminal voltage. Wh r.b)ncitfi: ;zh +:hqen 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 sho4 n-v/mcigqh.hw* hlh0nv - 2luld

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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 adlukwqy6 a2eyeu5; p8amt65- adition 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 o*.4aw+4wr a lyx3sdbmbtained by properly placing an ammeter in a circuit consisting of one resistor and one battery. As a 3s+x4y4awm w .*drlab 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 shunt re sbx779ww9bij sistance

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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 gbg+tzox; 7bu )cd n39jpb6-pa galvanometer, one normally 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 vo*m;tml0t(g2 2js4j k7 ra0rrdufylv-ltmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter aco5kw* q(6u asaross a resistor. What happens to the total current flowingsq*6kw( oa 5au 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 wired in series with an ammeter, and a voltw3vzzzr* kl19 6fwf+cvc0(p v meter is placed in parallel acr0 vcfzrv+zk6w *wzfc v1(pl 39oss both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wire 3cclrg(m42t;)odtl *bw7v ute2/ux gd in series with an ammeter, and a voltmeter is placed in parallel across the resistor only. T2gc v4u dr *m;tuxe7c2 3/(twlotglb)his network 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, fssvyxp n5-yc/c)u 4d( lo2.tnaz*j.r/ 9erw3.0, 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, cn:dw hsa 89ph3e1ge+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,up7 f0c77uded 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 series combinatisnr.mm a(5v9y on 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 3siemer4b1507irpd: p2j t/i 2gry8f v .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 para)onn t(kd (q01 tx4mvn /opsc6ad+v*allel 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 ofd3lpr 1)bp2bt40 g7tzh5u4rmql u) w f 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 into a parallel comof n3siaz9p61)au8-t4bb;r esc 8t ytbination 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 w-dsv/fb8 st/appliances are connected to a 120-V circuit: 1200-W toaster, 650-W cb8vfwss- /dt/offee pot, and 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 pwkfm w9( bu/w. x+lu3of 100-W light bulbs you can connect in parallel in a 120-V circuit witho+ w3fwxkw u(/l.b9p muut 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 rhoyf)r3 ii q2/9-p1b(bufaz $\Omega$ 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 and19xg +znwsq-/rbk 5fy- ng3 hv 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.kzja-.5rtcl k5, n9mz+. i-5 vwuysos 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 and 9.0elnp7v0w busuv -4io2lk 9 b71 )hchr3 $\Omega$ 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 9.0ct;.ep cn (,hjmn u7mz+5f ,sg $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0s3 . qxef+-rkxh3,nu1cql o+s $\Omega$ 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 tb; gkf+spxm k9.i9o 999 ojxvahe 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 througaj iy++s hi,grm *nn+vhb4*g6h $R_2$, 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 :.tx iyo :k/c5k) pptcFig. 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 currew;ste4: 7 /oqtzhal p5nt 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. 1exnk*b8cj ab5 3qtbh921z h0u 9-4, 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, determine the current in t16dxn mw + z4yvax(7z4 taptm;he 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 relati2ly7lo6k). 0e qwkzlih3 mic7lux) h1ve 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 point B relative to poinhqw7f, 6y-xefaqwe5;uzv- 7n t 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*) ygewq -ue.x7q7 na5 huk 6impk/mp* D relative 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 thegwxv0x f33+gy battery in 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 frohdv ps)9c w01pm 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+cs:qf(pp w-zlplnl 4 *9euj8n 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 currentuxzlu-,g* mxroq:wh.s.z6f6+cx .; wf;lqd n 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 in thaxxv).9nehx fq y 8d1;q79nvl e 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 i fvv 4-nkdf7mv/ik0u *n 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 )4 dpg8v1q//pr zu(): r8xdgkrrsynithe 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 the1( kjp0 h*qjqe solid wire connecting the upper left and lower left cornersph*1(qqje k0j?

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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 )u0ol. /qg- gbr. qjtnin series. The equivalent capacitance of this combinat )lto./b0.-qug n qrgjion 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 ayetby:(i bi8*/aveh2re connected in series across a 12.0-V battery. Howba(/i2yh8bi ee*: t yv much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in serixfu4twjnx2u g osfoid56:41oga a 71/ es across a 12.0-V battery. What is the pofg1jo/7os6 4g25o ix4f1x:ndt awauutential 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 batl k1ie/ 1yw*vitery. What is the voltage across the 1.0-mF capac/wy1klv eii1 *itor?

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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-mF74xzakd2v sg+ f)7fel capacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0avz 74ld)7f efs2k+x g-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 parallel ac16 e4o) ifubv( (nelqzross a 24-V battery. How much energy is stored in this combination when(ibloqeu6 z(4f )n1ev 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 zar-2ui:k 8d gparallel, and this pair is then coag8 ir2 ukdz-:nnected 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 8.0:*5yie6lq ;png oyolyqg-v. 20 mF are connected in parallel. The combination is then connected in series with a 12.-.y in5;o2 l:l6yeqgqvyo *pg0-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 p l+skz2twar-; z:7gs parallel. The combination is then connected in series with a 12.0-V ba+s l2zka7t;wg:psz- rttery 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 eyv*yw*urp+2x 42p0bf lfdh7dca c;. mF are connected in parallel. The combination is then connected in series with a 12.0-Vfw7ar 2 .+f0x pdu2ycc h*bd4pl *eyv; 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 through a 5wl :.2n0bgzye sn i7u10 $k\Omega$ 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 a3+5h gon s;r7q: emhml ;yy*sdischarged 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 am 8+ymsuof9qa:gmrge94yo * ; 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination ur :+;f * mme9oysgq8gmoay49 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 i7 476ad3w8 lkbm-r ;db razrzss charged to 6.0-V. It is then connected in series with a 3 arbswr674mr d; zdk a-87lbz3.0 $M\Omega$ 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 i+xn 8adt)a,ldep qk(adu7/b (nternal 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 of 24.0tl,4 fhmb ,vn /,jqnitad0q4) $\Omega$. 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 resistym*y8gchesmr( * r4:o ance 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 rystjr +rmgw +;ny93e/ k;gbg:esistance 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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