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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 76j8dxktu sxq u1ppto; -o2 5aterminals of a battery, when no current flows to an external q;pps o 261jx 8uk7 xttou-d5acircuit, 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 betw att yyj - yyitc4at-v4.j,y/oz ezu,t 5(e9l5een the terminals of a battery, when current flows to an external circuit, is reaaje j/zyt45y cy9 5yy-,,t4v itt.oe-t u(lzferred 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 con*9u1 hhl2e/aw qc)yd znected 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 skwo db;h8iams2r h)(l93bgk .eries,

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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 t(77xvlj dg,k lo a battery. If the current 7klljd 7(x vg,of 12 A flows from 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 series t-/q+1 qtyv2s;.m3cva:xh dgm hg6kx h o a 12-V battery. What is the volxxs .hyvqg213d+:g 6- ;cvhmq/mht a ktage across 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 series to a co b3sx1gl gxl7)nstant voltage source, the power supplied by the sour)bgg x3slx 71lce

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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 in7wpurg3v* 4 ft 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/+vh7f cl2gv(;68 zym + ;-qiw ro yg:vwdmjci in parallel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected i; uaz2e-b;a zwuybu1vjav -6,f +80 gkmlq+n mn parallel to a 12-V battery. What is thn ;av2,ba km byz+lu+ fe1a--j 0vz68m gqu;uwe voltage 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 by*o 15wet hhm4attery. If the current of 12 A f4h1heyow t5* mlows 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 Chro (g-: mvrv poic;kv(r;g8x0sistmas tree lights are connected in parallel. What happens i rv(o:-gmsvvr ;;(c08kpgox if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in parallel to a conyk-yrezdmi2; ,f-(q/s wiqh 0stant voltage source, the power supplied by the sourc;yd-hsre 0(yq2fm izw /i-k,qe

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistorss: n/*zsd9 pjoy eg60g, each of resistance R. The maximum power each can dissipate is P. pe j d/0yos n9g:s6gz* Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's jun6 g eal umq5t3+s,/a9 0xrb:a/ uar4 io7fjamiction 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 ruw32 jidiwc)o*nr) z s0le.
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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 e:ia/j a+7 skarxample 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 examplec1gt1 96id:r267qk lezp l 8yo ojwgz: 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 cirjff - o)q 7gy*wr)nzq)hz u3hcr:5w;lcuit 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 storag etn p: ;mzh3,o+g68 bpq/ke6kbba q0ze batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the cobt0q :/o6egnq6m3b ,;p a pe +zkzkbh8mbination 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 togethde 6ajyfb(i rat.;xtk )b8(k2er in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provb d2efb ; a)(tjry.8(kx6ka itide

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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 parallelv4,ld+ zwrz9 )c*iypt, and place them in a circuit, the clc9 )* 4p dvz+w,yritzombination 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 connecat19 6oh(1rspvi805uvfe gbl ted 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 capnbn ;+js998.y 3vkz5 apokk9 iyjjpn8acitance of pi 98y9v3pokj ba+; 8 nkz n9nsjk5jy.the combination 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 batter*ujs48 dm: apzr;up;iy. If a total charge of Q flows from the batt8 aszu4;p;ji pu d:m*rery, 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 arebht. fd8.mmkkxx)o wh: rod m,4 f5p7* connected 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 cbd ln c/ffs6vs . 2v1ey*c4ry;onnected in parallel, the equivalent capacitance of ths/slv2d.e1 by fr; vc4*nc6fy e combination 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 conneblcg+klqcyu +e 7 b(5(2czm ;scted in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor car q2lelz;c(buc+(b c7ms5 gky+ ry?

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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 q xoys-2z:s4pj4 9tl uxp7/)j(doyt jk uantity 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 arey. wdln s2nfq)uz. c;; connected in series to an ideal battery of constant terminal voltage. At the momes;wf 2cdzyn ;qlu.)n.nt contact is made with the battery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal by k04 mr83biltq.; wseattery of constant terminal voltage. At b.limwy8;t 43 ek0q srthe moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacit n(m k( isuzod-k+e04nor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resisz+ie k-n (s(4 unom0dktor 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 sho208lbrbm rm ugjf, ) maja)p+4uld

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can bejpb /c+-pvd9n :psv0wny58dyf/ x:l g converted 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 obtained by properu c3xz/jp:.ls b ;6 dv ,rjh.-exfk+prly placing an ammeter in a circuit consisting of one resistor and on./ h . x ppvr ;ubscjk-d+,xzl:f3rj6ee 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 resistai .nvgp .+lhw,ww ;hu0nce 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 norrsq,, ho;4 -c5 )m7gy dzd(rca.nrs oimally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series re eimt;r9e le0g5c 64s++ byorusistance

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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 o+4 n7ljv tvuc;v;rjm2 btained by placing a voltmeter across a resistor. What happens to the total current flowing in the ciun4l; tv rjv7 vmc+j2;rcuit 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 ak/ vmfawt; ypo5k5w321p1yb c 6k5aj emmeter, and a voltmeter is placed in parallel across both the resistor and thewk6w ao5y5pk; v5231f ptjy/c em b1ka ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series wix65z it1mx(mnth 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 resistancet5m( 6mzx1inx 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 ypye42 pv1z /5nlyqb7.0 $\Omega$ 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, 12, and 6z9:;ibdsas apj-cyp -00o 0 m5qq(u gd.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,x z2bn /yc9h*8zse+ut 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 combination of as7ap ku f1d2.x 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 combin: 8w gjgjx(7cwation 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 inpv16 e47a v 2c0tuqbu-/agcvmto 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 combbe5 akxtlu35h a 748lgination 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 combl iws (9(ngbv wh6f2t/ination 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 r a; z4kgtiz.(to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the4kgrz it.za ;( 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(fzho* unv 8r8v9;i+ gu3 bs:kpu+mgv can connect in parallel in a 120-V circuit without tripping a 20-A iu*kuhn9 (z+: 3+frsbmvopugvg88; vcircuit 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 p+n)hyil3+ o bc 7gm(ou,t:uf$\Omega$ 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 30sh(p xvakc,,l * ep(3k $\Omega$ 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 :rq,j37w*tm) voway+gbrt t( , 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 9.0 lgh:2.7fo; zio- )fp n p*fw-llejxt9$\Omega$ 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 anm. 1f4 7v:os/tgt hbjv01 fwqxd 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 akem:7 c:b9. p9;szpt jgbha5 hnd 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 Fig. 19-2? z6 ld;v9 ct dgnlt;g,(


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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(aqrb t /v :5:uw9ahgl $R_2$, 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 resistanceexus o3 5vyq1b- u;u6 8i0y w7zfhv:hohc/q q9 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, determine the current in thm5ub5; khv 1jye 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: yuchy a4/f2m 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 currensd .*eb8ejje3x ,azi *gtv-e .t 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 point C in Fihy5og4bad2 y mv 8+.p1j wk8c9z2v+eqyj,tdhg. 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 Fig. 19-5? -ye-ee fla iw pmguuc-4gb-3ncf:;37


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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 t2r4 a* snste961rkjrpo 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 rjk1b4jczjyh e vi(0)kn b:+ 2Fig. 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 d pi: k,xhchpf-y++6ltrop from 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 in thew0d)- /r hcxbdc+dr.5 qrav- m 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 qce4de6/ igo2h3r (ug 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 in5 ,dyf (mfvbn- 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 i1g*+( ze8elu trfl.g 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 2/g3s umbi+npz,ep*1krn1 v x$\Omega$ 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 sj4ely8f gz3 sxub ),n:olid wire connecting the upper left and lower left corners?)ng8 beju4, zsf3x:ly

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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 i*ytt/3ojvp 8xn series. The equivalent capacitance of this combinati toy3p8xv *j/ton 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 capacitornzk0(ulc+-2 )tl is brs are connected in series across a 12.0-V battery. How much charge is stored in the 5.00-)-zcl s0n+2 kbrlu t(imF 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 c,ex 9lhwt6tcv 9) zn)jp5 vasw,cz,e)onnected in series across a 12.0-V battery. What is the potential difference 6v9z)tew9,pzech n v, lx tc))wj a5,sacross 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 batten(u+n80oyd qu o p(w r6gyxn*/ry. What is the voltage across g0n 8o*x+du/ywnupq(6o ( rnythe 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 ser z1w2g jcs/ke8ies across a 3.0-V battery. What is the voltage across the 2.0-mF capacitor?82/ 1kjwsgecz

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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 c(ccg3so3 x8 zp9pk4 hmonnected in parallel across a 24-V battery. How much energy is stored in this combination when the caog39xz pc3sck (mhp48pacitors 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 an0vbmur5 7zco y3fr8-gd 20 mF are connected in parallel, and this pair is then connected in series withovf3cb0rz5-7ugr y8m 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 paralle .a4gv1zk jqd1: fdzt)l. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent ca d4)gvq1df:z1jtaz . kpacitance?

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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 q-7sr.bj8pm orcq-mu+1qo3 bi(r 6m ein parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacm+reomcbp j rqq.8 -iq -6so(173u mbritor?

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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 wx9 ew+ipf(-m mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00wfe( im x-w+9p-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 chtzu ,h06 qqojx-p(yaw4;r 3) w lkz8tnarged 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 charld/wtd-,jme p : b2kw9dmts0; hsx 11tged 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 connectc. )edvjmi7,x o ya5+:syi1xked in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. Whj:s75da xmc.i)x1+e yyk,o viat 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 l*3mfh88 ufxjwn ; i7ysi(f;jseries with a 3jns8y *x7;mlfijfw; 3( fu8i h.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 internal resistanceiwuv, )4 ki htco6hjgd y179p4xf*a 5 x2db6up 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 cop+iv j .bblf;5pp4qn9il with a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance of 100 1zx38r.uj bxhu pd27/rdb c*o$\Omega$ 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 remtgaxso qw22 e tq)jh967,f z3sistance 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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