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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 te1 qqng-t oj8h;rminals of a battery, when no current flows to an external 1 qt;q on8jgh-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 between tuv;tn/ dc,2iq1 3hv zlhe terminals of a battery, when current flows to an ld / ;zn,qh2v1v3tcui 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 ar+;vf;zn(hq 3b7.6f-hreq d6spq aqn1lvh 0 lbe connected 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 connerxsth djbheq:2 h(-q t81h.r4 cted 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 cys dapjk9t-l-va7(h(;q3y b monnected in series to a battery. If the current of 12 A flows from the battery, how mu;k93-saavdmlh(b-yt q(yp 7 j ch 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 to a 12-V battery. d5r-o0s-t pvoru +r38m5:mxa3fs eju What is the voltage across any one of the resisto-sf+: umad8 r er3tmxj 055p usvoo3-rrs?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage sourc9rnb 4v8erqykeyyw9 )e 60 7dao9e,kxe, the power supplied by the souk9 ,y 97e8owydqe9abn4ey kr )x 60rverce

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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 connectev1 t4 ejpc(k l:9t )4plqb)ozsd 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, wehii e51lh/y56sg,er b 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 parallel to a 12-V battery. What is i60kc +)odj7v k1sbr/s3(rz 2e ush.amu8 cgvthe voltage of any one oc iorvk8vz1h0je(m6/ d3us sgur.b7)kas+c 2 f 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 paralleq3y,qhbssx rz79ed4 ynim7 /:l to a battery. If the current of 12 A flows from tni7 e qyh byq7sdr3z9m/4x:,s he battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connected in p sjs/n *jua6h4arallel. What happens if6 ssjan 4h/u*j 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 consta.klx igha +k/e)abam 7 )m6e4gnt voltage source, the power supplied by the sourm )+4gkaa )e b7.gxlie 6/kamhce

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each of resistance R. The maximamn-d 1 ftw8otzg;6 l-um power each can dissipate is P. Two of- z6tf td;1m-now gal8 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 junction rul5/dxmn3v juvy/ cdjat2x2p8 +e.
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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 rult+mb1eqe0l0js hyy08 6q0mid o wf1 4oe.
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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 a,.xoseqo15 ompmr :90 t8g ubyn 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 ex drgx ha1)g/ sp1ud.w2ample 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 circuit (x)eurhw/a p:shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries togethspu2 llf )1ul;d9p v,eer in series ("+" to "-" to "+" to p) dupe u9l1l;,ls2vf"-"), 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 batteries together in serc(yj3rr)sq tkh3y,jeo: .il. ies ("+" to "-" to "-" l. sj,3ic):jyq3 ktr(h .roeyto "+"), 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 storag2)x6:bq (dn/ xub eiiye batteries together in parallel, and place them in a circuit, the com: nbuy (xe2q)d/xibi6bination 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 connevxb+v.g5iav) cted 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 seriq6x;il ,r5z.a 3yiu nm dvwwa6:bot* 1w1l2jses, the equivalent capacitance of the comixm trlnbla1 ;:v1 adj.6*wsq6uw2 3z5, oyiwbination 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. If a totajy4ty,f4 qd d7j2v,z9zhkel9 l charge of 9y2f,hl7td kj44 j ey9v,dz qzQ flows 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 parao tq+k ud-15 r9ayywq:llel 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 connected in parallel, the p a3z cd).4sv ppb3g0yequivalent capacitance of tp)d 4b0zpay g3 3vsp.che 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 ah8nvtg +bx.c4 re connected in parallel to a battery. If a total charge of Q fbt 8 c.h+4vxgnlows 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 dr z 0 b+hv*k)blvju3q5hxm;-kek2d0 the 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 co;a0k8uxoq6;i +upkuitz *qr pkjx gn9 py9 ,17nnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, 7 x9gptu81jzka nu 9*kqiqu +k6ppior,xy0;;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 bx8 m/2: 0af aqsk7m33icw dyrideal battery of constant terminal voltage. At the moment contact is made witky02 w qcmr7ad axs: 33i8f/mbh the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal bcmilncda fk67y63,mh2v( e t9 attery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistm3klhed ,i6n9vcmt( 6 2yafc7 or 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 shou ( tn,fx-wsg1tld

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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 coq4ob eyzc6 r/h)by5c-s+n.xvij 9q/cnverted 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 circuw6t i;- d4tpm efqte.5it consisting of one resistor andwe m i4fdtt. ep5-qt;6 one 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 resistance of an ammeter's shd wp63sfc58rqw ;s cr3unt 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 normally woul5al 9d 2ls+xwrd

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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 resp(imkfo 5cs *yq7x (cymw (8h+bn 4m9iistance

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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.-t32zee6 wb0 wp3ukbujtc xv4v t .::k What happens to the total current flowingututpc:w3jv z kt3eb v :b-k2x.0ew64 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 voltmeter is elv3 ig:ib 9hz nye+0+placed in parallel across both the resistor and the ammeter. T 3ieezyi+9:lhn0 bvg+his 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 with an amme zjiobp+a 91vl 81j*qvter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a v8ziq*j1 b1voj9 p l+abattery. 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, 0dh glb4d 9x:0l-h1-5dzpi zdl 8xdfx3.0, 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, 12, anev; tk p7fka7xiu2--:gtb2r q d 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 y64gp.96 4kn yzssjd/:7tehabq r*ju, 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 cokov:v 49 u3 ss0+c57cf gzbqgimbination 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 combinan:6 zfai8vu;(e( z3ke k.z llvtion 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 combinat-2wj* 2 dnmyud7 w5uqk5omhd)ion 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 oshv9-e -.-befbcz(kao0 sb1e 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 combinatiu/sja0;*(/f2kx +iwe;6 twh jau dvvmon of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-W toag9g 4ccr 2ac0fster, 650-W coffec02g4crfag c9e 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 of 100-W light bulbs you can connect in parallel inra, xd jj*t-;n a 120-V circuit without tripping a 20-A,-dtaj j; *xnr 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 2.02/li39ecr td l $\Omega$ 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 ux6 fe0mxhh30vloc ;530 $\Omega$ 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 1 l+nee.pm,sx7 0.0 $\Omega$ 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 9aqop s3 z,k)nypl2kbmv 7bb2xt88 8g6.0 $\Omega$ 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 and cjpi p zm2smylomee)s7a5wm- 9p.r 8 0 u2)v-o9.0 $\Omega$ 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 andqq 7 ot lc+d7htfq1euv.68qr1 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?kz+y ilvj9y45s((s-rfohyg6


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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 through0ihr5f 9ir08akai 4 3myhw-hm $R_2$, 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 m;wc wvzq 5z86t 0x.s3wpts.kcircuit 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, deti*lz35y7yk3p t,qiibl 3q q p(2eu9xfermine 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. 19-4,5om+e(3 xmrn+c l2pxb 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 8ljj/ d.q:nfzvnc1.a. 19-4, determine the current 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 potentia1nk(zt c h dpbjfg*:73a2dsth,z) ny0l of point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relatg 9+q rtaho9 eix g9,tpk49fq:ive 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 pg 3iq xpz26tr81slb cnx/19m voint 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 F(ul9f36v x zdd)yfdc; ig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point B in Fig. 19-5?en o16 bgj6iuy:x0/1f7z5 0fv)qv4 ukal byoo


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current (nr p*9 s rzc-a7mln0ain 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 q q)f4n/x2rm f$\Omega$ 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 thr qj3 ozk mwq0(m3o)s5k653c:ukceu le 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 t i- k.doxgj2m *w,dfx/akb1 z:he 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 thz1abs fyl+ ; aum ,sj(vmoa g.m;sk.,:e 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 connectbcw kuhz 34j( )vqb29bing the upper left and lower left cobuw(9 34zj2vb)hkqbc rners?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are connected in series. The equivalent. g n4io9bpjv35.qxfe capacitance of this combinxgbn3pi f5qjov4 e9.. ation 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 capac/cti);cj lro 9itors are connected in series across a 12.0-V battery. How much chargej)9 t;r ilocc/ 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 upo dd znrg447/)a(dtcapacitors are connected in series across a 12.0-V battery. What is the potential dig (r/tn 4odd7u)4azdpfference 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 3kiyusv+8l;g3bpzx f7tl - 1( i.0-V battery. What is the vv;k-7pigl3(fsyt 8 x i+zlbu1oltage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are conn9 9rua6m4gzisected in series across a 3.0-V battery. What is the voltage across the 2.0-mF cap9 i6g9sa rzum4acitor?

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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 capaci0n3 z2tyjusv 7tors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fully chargedvjut2y7sn3z 0 ?

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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, vjrpfrc2;r:3b obzn d4 ;cy*i.//xxa z +(ixvand this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this ard; ir:px/cz (*.bcyjox4vi3rxrf2 ;baz+ vn/ rangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.0xq vy,3xz**jmeia05 g 0 mF and 8.00 mF are connected in parallel. The combination is then connected in series gz 3my,i*a0jxe5 x*qvwith 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 ig.s, b; m elwww5uh/g3n 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 l/5 3eum,bh;g.swww gthe 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 8.63si rkm8qmb:uh4 a5r gltm9.00 mF are connected in parallel. The combination is then connected a35ms6: g8 .rlbt rkummh4i9q in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-mF capacitor is charged throuqkxk4 hz:sfkq6 45x w9gh 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 then dischabyv9qge mag:d;v- 3mx41 kt1wrged 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-mF capaclu4(. hvp ox.eitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = elvoh.(.4 pxu$RC$ 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 -lmt(/m7f /3td ma5dw2 rxbplcoh.h ;connected in series with a 3.0plftwcrhh2-.; /3dm a/bmd t(5xm7o l $M\Omega$ 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 resistanc(hjrlsohbn -3wl5k3. +2t aace 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 resir 8j ,9h gln;mgzy,:mz)0s6k zsl.p kystance 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 resistanc8 ar/h)s 8uj, r3hidfwe 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 a820rsd4lg67y m uvyfd coil 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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