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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 differrp ww-ras 8/j/ence between the terminals of a battery, when no current flows to an external circuit, is referrp sr/wr8w/ a-jed 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 the terminals of a battert vv vli4.o:k1j.z/ ;n1jdenb y, when current flows to an external circuit, is referred tzk1vi db ojn 1vj.4:;/vt.nelo 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 conxxt0pig); ajt2 /1haxbl * .arnected 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 saluv)z )4 3pzxe9m+i neries,

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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 battery. If the cur(v,qkc1s k4ihrent of 12 A flows from the battery, hq(h,4 sck 1kviow 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 to3j bl +3ug*kihh,a/lvg2vw bk(/z s(d6ao qk6 a 12-V battery. What is the voltage acb(gl k+/gha(a/vi ,uj3kdv62b* kq36o h zwslross 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 constant voltage so:6av4zf )u yiuc3( jdzurce, the power supplied bu(icj: zyfd6 )z34uvay the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected 3w7 k o+tq8ze i;hliucs;,m6by+rwe7 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 qy (ys:a;fh:rbt)kc h(o d /4fin 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 in parallel to wvldcyod3..fqy3- 4ka 12-V battery. What is the voltage of an 3fd y-v4.lckoq.3ywd y 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 bat.,gqurv ox*3bt ja 6r)tery. If the current of 12 A flows from t*gt oq rx,36.au)v rjbhe 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 arebr(3p e3ex4eio1yk 7 t connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to t1y4k xebe33 7(otir ephe 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 par gd: cuc(t,gs9swxf1 *bol)z j/ i2(e7dwsj-g allel to a constant voltage source, the power supplied by the i:bwldj2 wf-scg1 zt gd7eo /(juxs,)9( sgc* source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identi,p8;iwkb ti vq-nex5,cal resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected i x-8i5bt kpve; w,,qinn 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 r 9x uo,c uk3a51d.vqjxule.
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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 rvuel+/ v gk0xm//r7q9.gri+wc8amd qule.
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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*y2 epeeu.v;*d1lcox 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 junctionv 9 e,i (qwpami sk 75qk73pqc0/vu)pp rule is an example of

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the equations here is valuno. j4*xhcs)id for the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("ttd0* 4we :lnjkd y,d/+" to "-" to "+" to "-"), and place them in a circuit, the combinat edjyn4 k0wt/tl:,*d dion 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 vb2:d.9e(b thw yclh 1series ("+" to "-" to "-" to "+"), and place them in a circuit, the c(c lh1h9wb:2 edt.b yvombination 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 plqwo6*a. wd6((s +dlbn*hq quarallel, and place them in a circuit, q*6*bod +ln (6la w uhdq.sq(wthe combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitor1 f5w a:wvjmc: 1vs* 1uyh*c58chunkys are 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 connected in series, the 8t+jv *ziligbt;lw . i7 y8vo;equivalent capacitance oilt tvzii; jv8bog;+ylw78. *f 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. n2p;z5hjihb ln u0;w3 If a total charge of Ql;j2nwp;3buh zh5i n 0 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 parallel to0lu z.aqw., no 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 parak9 mlw cvx2d)u(;gw 7vllel, the equivalent capacitance of the combination increases.lk2dv wm9w7gv xc ;u()

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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. acxb2x)kbcoc( 0t-0 u) rpy7 v If a total charge of Q flows from the battery, how much cha0-cpu)orb y2)v tc (0xxakc7brge 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 the quanhh x 7 tvrglpb/iail2/ 5r2)e/a*nud 1tity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in serde og58dljhu: :8n7 raies to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacd:ha75r jne :8lu 8dogitor 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 capacit 4 thivzdy-lu 7idjz/(7el30jor are connected in series to an ideal battery of constant terminazdh -t73d0(zj vyeulj/7i li4l voltage. At the 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 capacitor are connected in series to an m :8ihr ;ny*g x3hf0)qwyhyt6h0c g7uideal battery of constant terminal voltage. Whe 0g8ht: q6yghn m73f*;cwxyu)rh0h iyn 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 sho.m*r -d rprdqw m0e7.vuld

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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 convepq 6wyfn9 va)0n(m0aerted 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 placing0msfv y ec;;ywoac)74 an ammeter in a circuit consisting of one resistor and onf);wyo 4;e7cmy0ac sv e 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 ammeterckn51m -mmzz ,'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 normaa l *pv:k u08opaajk.s;( f+mglly 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 resut:-d, va 0 iblt5ny as34:wnxistance

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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 .nbra+m8dw m,y9l/ )sy-b/ji:cv y/qe4 bybgplacing a voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of thigw .e, bm: ibayy/rm+ /v/j9b)4syd8 cbnl-yqs 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 ammete,:ujxtf y7wec/+zwks4x (l69o q tv8vr, and a voltmeter 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 the voltmeter readl+k voz7xx6j 8wcutwqt4(,9fyvs :/eing 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 voltmedq , co945t*hss9 c1mmzwr-mm ter 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 thec,-m m9s d m*sc zw5rom4h91qt 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, 5.0l)7j h.yccw kebh3y8 6, 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, 5v+trwy2 oe lit.f:: h n9v:bsand 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 123kgshmz+u(o f(b+zko tw7ti1e c7aszf))g 42, 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 comxiayjbg*7i 3.jo(p9h m2 uri. bination 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 y7/-5qq45hj k9)b dvy9vzll tpi2 lfzinto a series combination 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 combination of 4.b6t1etg/fq k2dcj47 h 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 intbw2mu(h5 w 2f732ht6;;fc ktnyuco vho 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 combination o:o;3em: wrt9 abu a1sjf 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: 12fo1( /yj)+sw fbpga)bg )i5cj 00-W toaster, 650-W coffcjs)gb i))+f(1gywp/bja 5ofee 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 connd fokc:tzwjw v15)+v-ect in parallel in a 120-V circuit without + :octvw1w fk)d-vzj5tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.06+egm/n8gn+uv6 hf xf $\Omega$ 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 a)hbjg.dse drh9cs +)4 nd 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 qx : 6 bh7scmt+ew4ofg3zy2ox9pm37.h zqjp/ , 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 .b; .yq+ygh jzqj 3e5f9.0 $\Omega$ 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 97 yl mk2 a:/rc6)mp1poixkwy 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 aw1 v) 8zvb;1aw* ct1fj xl05qeiyyq4 fnd 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 kuw ((c bdwlr1m2-1sz 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 throujb mtz2m*v.cr(e:z f04oh6y (c9 d axvgh $R_2$, 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 ;ba t*9dfuc4sk0: agtcircuit 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 curren47p+,6edy dq 5 pdxjnnt 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, dete4n*;j4f8p b xiwo8pw nrmine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4,at4 3nxt wgrxk2*;y6 c 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 potential of point A relative to point C in Fig. 1xbyu92j317f y byep 5fw48 vnm9-5?


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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 ig/o05 vxu6l6qiez89waav 6s q n 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 F:pyf 40h vjs5eig. 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 batteryzp)mpkex08xh 9i(on feo /k7, 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 fro/ua7 . nwc7j/dal6c+hughv )im 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 the pym3aw9+uzsts:gf w. q0p (*o7 $\Omega$ 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 inex xzkr*r4z g6l ,vf4t)* 8ixd 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 jzn)p( e x1,vm$\Omega$ 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 ij mft7t rt 7r8qhop6 efo:-/d(n the 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 1 mc,6fweyr (+p8 $\Omega$ 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 connectinup p0) ifo/g*cg the upper left and lower left corner*)0p/ fpgoucis?

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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 c9 m ha4v).j4n)hapxl uapacitance of this cp 4n)av9hum j4lx )ah.ombination 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 capacitn . pg2kjvn1c cw-t);je lh3amr4r05iors are connected in series across a 12.0-V battery. How muc254igj)ejcrl;h 3wva k rtn.n1 c0- mph charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across a1d1f(,uy, r u (gabr+mv)j3prxuj e4s 12.0-V battery. Wha(rr gxu bp+a,j4u3mj drv,f()yseu11t is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series aj:6ineq, ;-f7a m/qrg5yif pncross a 3.0-V battery. What is the voltap;aiyf 5fgi/r 6q:m -ne7n,qjge 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 connected in series across a 3.0-V ba4*gb o/;zu nfb2r emc,ttery. What/ bm 2g4f,;rcobznu e* 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 ca uan9 xe:j 9v*10pjg9.yst+d k rlacahw6),are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors ak jplwarv: tn0gh.sj au*9e91 )y6a 9xcd+ca, re 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 an ;5ud,wp8jpde0 rw jg6d 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF e5wd; d0r ,jp86gj pwucapacitor. 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 17fwr1npl4 k p8.00 mF are connected in parallel. The combination is then knrl1p f7 pw14connected 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 mgs-f f qkvr); 4i**lceu z ri)4*ms8weF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capaci8fvg4m zfqsic)*4w*sle *-)ri u;k retor. 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 mFd ;2lv0zak*vo 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 6.00-mF capacitovk;z l v0oad*2r?

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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 ex l- tpk7,-66n wwjq+qmjvk 7a 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 a :u7x pvft mi./frkq0+*h rqk6nd 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 connected in series .n i xl q2 :-)(sylal-7corqgdwith a 0.50-mF capacitor. The capacitor is initially uncharged. ladon c 7:x li l-qs).g(-ry2q 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 s1tlsdsn4 r;uu, 6x e*r7nnul: eries with a 3.:nd llnn 1sse r;xut* uu476,r0 $M\Omega$ 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 r9 -ntcy)s8:ji nm ohu4esistance 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 24m /wv3qka owrq-9 r8-e o9hex+.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 :( tng*et ,h oow/nuuu*n 6zf/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 coil resistance o-io qdk5q:hg/xyr5 wqc+sx-z/gs15 s rmo,(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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