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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 a battery, whexlq;fqe(y::s + a/z qfn no current flows to :xqf: aqs+;/q(lez fy an external circuit, is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference betw3z-t1adyb6y4sn 2 p xkeen the terminals of a battery, when current flows to an external circuit, is 1bsya2dp 3xt-ny 6z 4kreferred 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 aquyf,pv2*p6a 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 connectedytpwqw .d 46fhlon2ve/7f f49 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+.n)dq(tz zq g a battery. If the current of 12 A flows from the battery, how much current flows throug.qgd)+t(q zzn h 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 connej.g5*/z*lr y)nx7*ak 9 /vlvxkpo r ricted in series to a 12-V battery. What is the voltage across a/rr)*axjrl.vl5gpvyn o*z *i x k9/k7ny 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 added61vje/t.ua 9 j,rnqwwa p z::k in series to a constant voltage source, the power supplied by the :p kzr9/6:ej1n,w jt.qa awu vsource

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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 resistorsu .9njl (e,zgx are connected in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, we can be certody.mqcn;c p2 +,w j5qain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel - wcd yw3 (mf6vgkhssc8r,cke5d .c) yq8ih)+to a 12-V battery. What is the voltage of any one of the resistors?ds we5i8y)g)fcvq .c h3shdk-w8 +yc,6(kmrc

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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 ad2cqn b9adt.4 1l r6 npqsn4;n battery. If the current of 12 A flows from the battery, how much.1abpc4 n62d ;4q n dqrlntns9 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 trgn6 optghpc c s;.)+dh10e5ulee lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in t.n)l g6 ;10p +ehgtoucp5c hsdhe 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 constant voltage sour 0ba-zyk tt2a8ce, the power supplied by the t02yt-k8az ba 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, ea;;d (wxlv : - ym df4/znoo7f,wxr:iodch of resistance R. The maximum power each can dissipate is P. Two of the res(;,:/ol nw y i 4fxwrdd7vmzo:d xf-;oistors 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 junction rulzukqc0.u3)a ,t t cu,ae.
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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.k naw3bi *uy46lm xgt4h24 yu:
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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 i:sjfdn *5m-3i8jm qt ps 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 ofgdpsl (hv i9-t)9m55q-x t;vw8ma bjk

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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 circ te5n71a;+oii*il cw suit 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 st9du+rh v2.wwu 1 scd-eorage batteries together in series ("+" to "-" to "+" to "-"), and place 9eu21 wh+dvru. scw-dthem in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" zs2dal,9yf3o)mur-k to "-" to "-" to "+",lmua)kfr9 o -y2zsd 3), 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 in parai,d 3 ,yomzjzn x.;8jy5pbs xr p+-p;illel, and place them in a circuit, the combsy3;-i oyxpp +z ,.,djz5jr8pbnm ix; ination 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 a(1s8ajl bv5dsre 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 dft7x z685d*(edgmwr connected in series, the equivalent capacitance 5( 6xrf7 wz8 tgdde*mdof 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 battery. Ic3bdrb)ako 9(vr92ak2j- wuef a total charge of Q flows from the battery, how much charge does each cap -rwbku dj2)ac e3kv9 a(rb2o9acitor 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 batter3 k3t wn:hb+woy,

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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 adwm in5 ;8b*lg awro,rk v/i,1re connected in parallel, the equivalent capacitance of the combinid lvwb ,/ r5 ig,1wnkmr;8ao*ation 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 battery. If a tota. h0sqgaoh;s5 q9g4ohl charge of Q qq0s9ag5g.h hhos;o4flows 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 t n+pjz(fr6z i 2mzkd28he 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 capacitor are conne.gfr:n; 2outicted in series to an ideal battery of constant terminal voltage. At the moment contact2ur .g;t:ifon 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 battery of sq6j n, y3lguu33qj1kconstant terminal voltage. At the moment contact is made with the battery, the voltage a,3jn6 kg3 1 suqulqj3ycross 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 capaciee.gx0pvhk/ 8yf*5mo s h)tz* tor are connected in series to an ideal battery of constant terminal voltage. z0/fy e.x hphk5tvgm)os8*e*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;yidmsr3 g l-h6wc.k ,

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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(wb u2 0qj,pac 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 properly placing an ammeter in a circuit consialf h5)qexklu)e8mo+8/bt)(ix,w *0mk a qzi sting of one resistor and one battery. As a result,)k,z5ai)+qm)8/hl ku aeb0w( to8e xqmfl*xi

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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 anqv 9oz*e. hh. eh*joj5 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, o+u. bxvc.df1z hb4j9w ne 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 atv*sx ,)byuwb +rxd6*a ;vox.kvs 0f) 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 plbw 5qbt)60hzmy2j97s ;pz gnracing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result o;jh629z) 5 wr7ymbg0t bpnzqsf 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 vb45t2-7b 8crhr 5zwtxyx1vu i .w6kter 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 dividing tx8ct-riv7wk54r xb6 vuwt y5.bz12hthe 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 is i4,d:.ntv dhn 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 resistance by dividing the voltmeter reading by the ammeter r.,s4vd:d tnhi eading, 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.j0zy* .pcsc 2hlo7 :t qn2a/gm0 $\Omega$ 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, 12fotk j* 3c.7fam1bo+t , 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 6.t7-/8- rox.r84z kt q igr4 n9ljtbn4ggwo4ka0 $\Omega$ 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 sh g9u(:*u tou0j6ltv 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 combinationsu baw9s .bqg9 vxlvhj 4 i4j1b5.:ud3 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 into a parallel combin ibqsfcfpga/em4oz-z 6n4/, q +pgy/ -ation 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 intoc (u9qrz rris:8j rdo*4uh(:f 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 comu*kcd0q bgxcs/3pz0 x2e(ps;bination 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 applianc( -i;f8gazefu,et7wq es are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same te8;u-q,7 giwa tzef(f ime 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 conne nre uk86.2smy5 +iat b v2iow-jfs+7zct in parallel in a 120-V circuit without tripping awiym2u 75ss8- fo6z .i j+2kenbvt+ra 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 x;azl y8.yls1z,h4 kdp 3ra)mxzs* h:$\Omega$ 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 andjdj:mm ag0x:cbhy9d nv*w4e5x 5me24 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,moe * ,7v*1 dyhg4zmk3evw6m npu9,xr 6.0, 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 9.0w3g+ z9u -b.qe lckmm: $\Omega$ 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.xcs* bz9v*o1y0 $\Omega$ 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.iuy6 qrqi.-dhyq/e ; 90 $\Omega$ 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) 5 ,vux1nf*t5sj9ut d:agsk z of 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 2-ju;bd u qs:w$R_2$, 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 resistan *5iou+n m(yji4zk ;dlw2yq+a b9rj+oce 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 Fighb-pif2 9y9 dkf,u p8h. 19-4, 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 the8yg;r z.p/ idxc6ufi xn; -6ym 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 the 7i- xq ( (jn9)hanqqs*h.jril 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 ru an, 0ksl+v*telative 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 rem+i 64dww9s evlative 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 Fig. 1 :jfu5ypx4 s4 e) pqk6klr,+ez9-5?


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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* 0wovxvo sz5(cns ;1y 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 fromkzr5 x)yr1i+ a 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.0l dijft. ym7p3zux6 in 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 i,, .ug lyb g:lpl0an1hn 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 the 4 ml 9 um6c9crc;$\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the nhg c;h7 6h9qc12 $\Omega$ 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 m hadrag0j7;.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 solid wire connecting the upper left ao, 0k2cplon8r/o cd )dnd lower left cor0d2,o/ )8 lcpon dkocrners?

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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 ep wg5o)s/j )5.dcgyp connected in series. The equivalent capacitance of this combinatjwg.sg) ypdpe co 55)/ion is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected ipqe8 +pix tahbqf+6 ))n series across a 12.0-V battery. How much charge is stored in the qa x8h)) +6+i fetqppb5.00-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 connect f d+ko,rw7nyl 1zi*at1yw6d3ed in series across a 12.0-V battery. What is the potential difference across dtrz 6fy ,odw+ ak1wiy3*n1 7lthe 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 batt0uq66 ud .swfi9t7hfc ery. What is the voltage across the 1.0-6.fqwi6 f0 d 7cu9tuhsmF 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 connectepr ozd7 .tyx0y wtw0(7d in series across a 3.0-V battery. What is the voltage across t(.y ry00w7 t pxtwoz7dhe 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 paralwoup(l s/ jk2a8v xmul-58 *kj2o/ yxllel across a 24-V battery. How much energy i*/ojulol2 um j y8 ap(l2ks8k -vx5wx/s stored in this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, oaiay32eg93 t6r m3yw and this pair is then connected in series with a 30-mF capacitor. Wht yw2amg3 e63ra3oiy9 at 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 paljxy t*5,l3gg)k e +mok+x9yzrallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF c x5lgt+ko*)+zklj yx,ey g 3m9apacitor. 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 connecteq(4cmtj9 ,p rdqi c.y;;s,wvxd in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF q;ps,,.4ct 9vm(jiyxdcw;qr 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 lbv1ixz 7y06vk;q+ fa x ll4q5eif 9,win parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. Wlby 7i 4exqq1z +ix,v6kaff0; lw l5v9hat 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 m ,8no+ roj (7d3o4ipu3mfb o w05lrzfa 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 then dnjsyft yu9 ,+4 e*m:ye a*ol4fischarged 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 conna4pp0 jy-pc:xected 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 change inp:4pa pc -0jyx 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.;tne0: ql /yprcdbr. r 6imho;(*apo6 It is then connected in series with a 3to 0;dpi.:lmc;hrbn6r ya*p (ore /6q.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 intehez53sw4r 3oz.nm+ pe )yw/davz 5j z9rnal 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 2wem +35di 3rft4.0 $\Omega$. 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 -prhvs9eb+ j 8of 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 resivyhco+qjz z49e n.fn1(g0 wp; stance 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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