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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 of (ztnz.:bzp/-)yb/ag j-up kd a battery, when no current flows to an external cir )u ./d(bybzp/zkt --:jzpgnacuit, 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 betweeb k0 o 0rxdqq7d+vkxi 6:7rh q8lu/8yhn the terminals of a battery, when current flows vqrq x0q 87 h8uikhby0do6l7 dk+ :xr/to an external circuit, 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 series to a battex)5r 0yatt6l ery

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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 ihny ., lxzo-1e3 agbh/n 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 b86jr/lb k y1zoattery. If the current of 12 A flows from the battery, how much current flows through an16ok/8yjz rbl y 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 1. m ozuw1q0 t +p+c(.obqk2jbw1tdy(m2-V battery. What is the voltage aqp+.(c.t 2bm t1dw( kbo+juwzoqy 1m0cross 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 seriemtq-v- bvcrjt,wua0f+ c pq655g-*b ds to a constant voltage source, the power supplied by the soug*tjb mcqf+r cq5w-u 0pb5-6d vta,-v rce

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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 to a okjk4wd1d. p. 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 cmr+ ojfp* 1 53cr,mlqbonnected 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 ynz7wdlf*a0 s2h.kde-ts r5)v 4l l4aare connected in parallel to a 12-V battery. What is the voltage 7. l4hskay45evd) z2w dntfl lar-s0 *of 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 battery. Iln:7xez fd8 0tsio)x* d3qsb0f the current of 12 A flows from the battery, how much current flows through any one of the 8 od)qlt sx0: zdex0 ibn*73sfresistors?

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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 o.vqnwg) y ;)xef Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resisx)e)y;n vg.qw tance 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 add/t3uvr y/,;ossvng: ced in parallel to a constant voltage source, the power supplied by thet /s,/ g 3ynsvv;:cruo source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identica3 lc6 pupnp n;jlf40w() drz1sl 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 tw)( 0 jrp1cnzwnldps; pu 36fl4o. 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 junct49q3nk/vw ycfion 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 rule.h 6g+d ww4fdygo1u,n(
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop ruleug mb- -+we53 yjdb8uf is an example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction rule is an example e;bho/q)a(2n /hj5v ho ,huwr 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 .f 6 mkrr:h0cc5twks2here 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 idxcd,3z;tmspwu n,p b4f/ ;q-/)o mxudentical storage batteries together in series ("+" to "-" to "+" to "-"), and pla//tsf qc ndw3pd upb)x4x;,mzo;m, -u ce 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 batteries togea), a t;y 2xg*7r u):wacwix*jhe m*fmther in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combin)mf:ma*jc *x ywa2heritx7,) ; w g*auation 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 b4 uo -y/a/7usn*twen parallel, and place them in a circuit, the combination will pr7 *a4-u/ /touysbew nnovide

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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+.l-k ijf gv7p s2,.dq0yrdb x 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 d k:+ityh g-tngt/), e hb1ux.in series, the equivalent capacitance of the combinati/1 b+tdht ,g-uht)xng.y:i ekon 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 bat(w jw x64zigb,v/pl3wuchh3k1x37d k tery. If a total charge of Q flows from the battery, how much charge does each capacipvxg7 3,xc 3 /d36ukwwh4hw(li1z b kjtor 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 parallejs bg5q e4,1 d*a*ngh7rac+pdl 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 coo 1 jqo4za*3npnnected in parallel, the equivalent capacitance of the como 3pqza n1j4o*bination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a bo *mbanvr(ng1- )rqh.juo*y) attery. If a total charge of Q flows from th)*(oymn1jor n-ha)g r qbu*.v e 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 tf/-g f hz9y49re)pjvzhe quantity 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 capm1kolf- +h y4s+ msqs5acitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacoqsfk 4s ysm1-+hm5+litor 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 ideaktw 9e a5epb),l battery of constant terminal voltage. At the moment contact is made with the batterp9,etkb )a5wey, 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 sb 8 9jjrb awn.*wz80nconnected in series to an ideal battery of constant terminal 8b.awnn bw*0rzjsj98voltage. 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 should :tlf5 t;k:6bq;judgocy77ptki7p3v

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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 c vpqh6+vi c k:n ,1)lnfaql6q8o9wds (onverted 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 obtained6we nwt3m05k;xw/ rma cpn5g9 by properly placing an ammeter in a circuit consisting of one resistor and one battery.a5/0 5w9;mpnwmc 6xgenrkw 3t 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 resistanc ;(vxa med+n fuf*na +-;ijk.ie 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 galvane -iqz2;lwv x6ntwf3xm(2s)aometer, 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 2c, t2hy erpswffh6-t w3 asl(c5x0a 6a 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 obtained by placing a voltmeter across a resistor. What ggqx l)denzp sod7ckql:/ h v*+97b-* happens to the total currdcgbd79 slxvog/*nkp:q +7e- *zqhl )ent 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 wired in series with an ammeter, and a voltmet+ioiu fr u:;-9s tdh*mer is placed in parallel across both the resistor and the ammeter. This netw+tuh rm su9-d;oi*f: iork is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmetervz6c *n7e-:67rfjwukvtk1 3 zyw- gy j is placed in parallel across the resistor only. This network is then connected to a battery. If one compuu3c7:yzfzkkj nv*-g61ety7 vw6 jw -r tes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, and 4.: zsdki 7rozms,2:p) mu0/zwvi( *i1 rwbb/sk0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and ggb n,82iuus o-hup.l 8(+ue b*/k9a(fqubaf 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, andr mhf1 9qit(i u;71+qom xonki9*h e8q 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 serieyetk,pp *2+8xxo 4auas 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 combination of a 3.c; rn6.p1p9 nq,ap0p7wgc ibd0 $\Omega$ 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 c0). utb05w we ddgp2tqombination 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 q:v)*9nx yeh19fvkpe into a parallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combinh + d0,1bobne(r-t virrwt5 6-6 cdphxation 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 :m afg;/m,ywd-V circuit: 1200-W toaster, 650-W coffee pom :,/yga;mw fdt, 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 of 100-W light bulbs you can connect in:mw6z 2j lqmx/9bh0oj1 dghc: parallel in a 120-V circuit without tripping a 20-A circuit brg c h1ljh:mdx62jz/q bm09:w oeaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0a wa; ff+e d ):e0nvug6n3xpd. $\Omega$ 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 wj*r-j /ua 0baand 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 cd4 jrn+f4ks4xme +33vp-ibe 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. s+z.fhcpmj i efn:76a+nfs3nd 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 2yev9 .c6,2n rm)f5l qg (uejkj a.jzgand 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 5.0w:dm-jk.8*:ann . qt w4wf9jf/n g jpu 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 ofo;*sy0)xlc f u o3znp* 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 through 7lple ib72q9 v$R_2$, 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 resistahia;e z q9cx;-t3c *b:c(hrbonce of the 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,ec p )1:8.o,n napvcow determine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in the 3 alu20wp216qn m kbte8),oz vl$\Omega$ 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 cuxhlfb p*7+5ug* 6xd exqik5v(rrent 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 poin* a+jb /xj: fzs*ns s0uwubt 3e,)rcr0t 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 in Finf xty4pc qpqm2+:9 v,g. 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 1zx vq./lf,coiy zu:h:gr(c (of point 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 fromgafxh.v:t5 ayn (9-pt the 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 from point txlf oh5.+7 5jwmhg7w 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 iycfd*a k9k)a1n 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 the 8 2-jpy ccpxp*.+zp2fs ,pdbd/ $\Omega$ 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 in0qm noh;+om8w 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 1. jdiyq 7uli,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 om08l00bsys w$\Omega$ 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 upp+g /;gtkbee j8er left and lower left cornergt eg+kb;e /j8s?

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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 connecq n5wnq+do3r -*k0pcx6 ruby+p*o 2h wted in series. The equivalent capacitance of this co+* qko*uq+wbpr3n h 5y20onrc6xp-wdmbination 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 conn)mkcgz732s a wected in series across a 12.0-V battery. How much charge is stored in the 5.00-mF )ma3ks2cwz g7 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 capa 1i+-y q)wnt6 qp90 0xq6hum(qiqohqecitors are connected in series across a 12.0-V battery. What is the potential difference across the y0qq6eq9ou1) ii+ qp 6qn0 wmthh(-qx 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 capacitory8jqj5m g y-h. are connected in series across a 3.0-V battery. What is the voltage across the 1.0 8m5yhj-j.y qg-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 across a 30vy,1:i( x pec, rmbrd.0-V battery. W,0y(pbmx c,v d1rri:ehat 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 mF capacitors are connekb3 8 ,p y7gfxq/mphj/cted in parallel across a 24-V battery. How much energy is store mbkp 87x3pfg /j/yh,qd 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, h7j*0f/askxjr d m78 jand this pair is then connected in series with a 30-mF capacitor. What is the er*j8/ajh70xj k fs7 dmquivalent 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 connectedninkh4k80(-gf u ylr6 in parallel. The combination is then connect4y i6urg 0knhl8n(-fk ed in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. v: gkaq+w a;caz4 e*ptxs/0f/ The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the v4;+qz/fe xap:tgs/ 0akw*cacharge 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 i4jxffn w:azlqah x 3 z-,ce/e4b;0f2and 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 the volt qef :4cf0x3/za2a,n;lbzj x fiweh4-age 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 charge4gs tjz:: i/mld 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 charged to 12 V and t /gw)7b5cgcv3v ori1lsa :lg*hen 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-sm7m;j ,3figtmF capacitor. The capacitor is initially ut,mf3 ;m7sig jncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in serie/8;vkp0 vephks with a 3.p/;hkev k0 v8p0 $M\Omega$ 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 intz z-z9e95qdctzpbpa1 6n5: yyernal 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 w- 54e,nx yfwcuith 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 internkepzr(j3y 9i1tg- 6b lal 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 coi ukxds agea)x.:5+gwq*q7ee: l 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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