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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, when no current foh8l e aw5 fm ex gz6i)q49,iiz;b91dxlows to an ex d5i8,a )ql9xzw9xibg o4hzem1 if6e;ternal 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 the terminals of a batter5k:wwr 3qeq ,ry, when current flows to an external circuit, is rerwrqq,w3e:5 k ferred 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 aw7 1zimvgil 9 +stn ghk6:jyb*yp0;y4re 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 co*0sueki6p q-y nnected 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 seri/zeh:kz ze80 les to a battery. If the current of 12 A flows from the battery, how m80zl zeeh:/ zkuch 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 connectptm 7hc0 yy8y1ed in series to a 12-V battery. What is the voltage across any omyc17y tph80 yne 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 source, th7jmro. xd,: mee power supplied bm.:xoj e,d mr7y 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 resistoroiop g 7kl8 ej:-6y3usb0ol d*s 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 cagancs; p*cp8e7x v 5a7n 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 paralxb,4mb(w fs,5rexdc;v;s5 wb7b(n ea 3 xgc (plel to a 12-V battery. What is the voltage of any one of the resis5 f; v , (b7x, x3swea5gcc;d(p4wnbexbmb( rstors?

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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 pai c5d:)- .a hzqnuevv4rallel to a battery. If the current of 12 A flows from the battery, how mucha )v4nvuz5qeidc. h -: 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 -:1n-.q+e alub,ynb-pyk a h.myxvn8 connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wiresb-nypylnakx, q1h:.auv8 b. - yen+-m 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 in5qn)aav sal+ ,tvi-t( parallel to a constant voltage source, the power supplied by the sourc, +saq)lv -a tna(t5ive

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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 vkpmh/a: rrp4fm ,+w f38fm4l R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these twl8mr4r/w4 kap f:mfmp,hf+3vo. 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 rule.eyur xy)ow, 5ls1 zm7ki4j o:*
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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 rulyr umf9yq4zo,:wfn-d /x(g y9e.
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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 example wzq /s0,,qoc q6+shhiof

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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 it95 e3qfcvy3 .c3sez vs 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 valid for the circuizv5wcyud 8y-gcqnl dh yc0 w2ed0/7y /fg83 3pt 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 stora56yp+cmp61qpab 2 c unge batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will2pp b1cquy56 pca+n6m 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 toge-i */ )lx;baym;yfkfn ther in series ("+" to "-" to "-" to "+"), and place them in a circuit, thf;bl y)m/x-a ki*nyf ;e 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 parallel,kb,j t2n);* qo8p1xlwpf rzq7 and place them in a circuit, the combination will w2 nq*rxp,kjpl);to81f7z bq 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 connected kqin 3o8 +b:c o4o2mebin 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 capacidb +8mr61 mbtrlqx4q5tors are connected in series, the equivalent capacitance of the combination increases.mrbmt 4 bq8drl1q5 +6x

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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 total ctzd0z dec -m4xohn:0e n))ip*harge of Q ecpd)*exdimnhnz0 ot:)z4- 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 to a batter,yz6,f+uy*kr dcf0 e e(prdn v: njw5;y,

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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 areedl )0ijveb zhj2( h20 connected in parallel, the equivalent capacitance of the com lji2(2hj)ve0d z 0hbebination 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 totc*f kj ha5vm1wlgw u;;*ik7a7al chk fcl*gw7h;v j ak um7ai*1;w5arge of Q flows 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 the qua0 xcvq3to, /tbntity 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 series to an ideal battery of conah wf/ v(bb6n-.-iv oastant terminal voltage. At the moment c.wnao(v/bav f 6- ibh-ontact 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 seri8;vq; xvyz of**gz qod/6l lr.es to an ideal battery of constant terminal voltage. Alqf*/ vz;g;*o lqr6xv zoyd. 8t 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 idealml abpd;a2- .b battery of constant terminal voltage. Whe d;a pb-m2.lban 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 should3gt w*a;l-j,g 2uaksg

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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 converted to an ammeter by the addit,j.vs (e5o ao.jia+ction 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 isn 5,mck4ihjqkg o.0d - obtained by properly placing an ammeter in a circuit consisting of one resistor and one battery. As- hn o,jgdk.cq m45ki0 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 shunt resistanmk82:ujonk*rd8 uh c)ce

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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 galvan e7bh3pku :2 ;zlrcbw 1rv.9y.vmf ys:s;ho:lometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series resistance8s,:6 me, *rmynkoj sg

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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 resisto t )sdu.kfhy.g5-tkky4qi3 a*r. What happens to tu*t )3gd. f -k4 iha5skyy.qkthe total current flowing in the circuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in serihp+mw 8r5nw)r88ta -+i eqxj1rtmz/ces with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is 8x 5 m+rzihmnwq-c 81)rtt8 rp ejaw/+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 yilum)z76 y 7g ot7 pvs6h x 1*zr6fqvf6jb--min 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 vofizyms1) x 77uqybvhrpj z6 -tov6l6m g-*67fltmeter 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, 5.64c cs9eerqs5 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, hk-y m5fa wmg(1*w,cm12, 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,: /lu:djd*2 ldsv2wgc4)ygiy 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 comkd tt(n4;gvu1ux;rg7 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 into a series combination(0tg qt,c7vzvc;om87vjpao) 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 4.0xb 9eq ae4rjk0gz /k,c:;.um h $\Omega$, 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 c7t jn eagblz1/nu v6+6mr6*ul ombination 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 combinat5t 4dd1mbun7 xn7 bdts1r7)mh ion 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 3qhu pw-l7wmpvw-j9*6ty yb* a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were oper6p-lytuq 9p bjm *yh wv*-ww73ated 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 in iy;8ma4n;z n qa 120-V circuit without tripping a 20ian 4;y8zqn;m -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 2.0yvo a5jwo5yub2r,-, a $\Omega$ 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 dx8kno p 4mauhd422u/z23 mt3nzg ni8and 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, afze/prh hfkpa-l; ,l.f yg*8t56,pdhnd 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 -cimn(4jady+d6/ks y $\Omega$ 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 9.0 c*( ixii c c*2juidyeoz.3.:l$\Omega$ 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.k*hm ;aq r gtpf8+4id80 $\Omega$ 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 resissf:gus/j v)e2o x33metance 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 throughy w0w3;ke:xv z9wx6qa $R_2$, 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 resistancb7zv:1mc.x) j):atj1jzu edn e 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, deteqmi(s1 f8+eq0ztq 1vi*wg )formine 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,sy 02b1e aqww 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, dar)e2ck1pk .b etermine 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 potentiaxa31d5 5 ;psrs2slob s r4ye3rl 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 pointi0+hdm; 6gp i efod53e B relative 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 e :s wp o(f9pgwcnk.b)r -8fvn /e0m6win 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 Fig. djt bx)z99b.b6nunni c);8bq 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 point7.dr.fvbdex1g8p r3 l 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 currentzp jwfy(;4 zpve6esw .ux*a24 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 in the 98*d :ren1ub qx;yeq.i/4o g zjhr-t s8 $\Omega$ 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 current2a,+z h2n/z+ww pkqao in 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 thedia*eg6. qvn7 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)tvw38;z gl yfc;) zmn 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 and l4rr 8/44zm3fgb i dqxpower left cornem8zx f4pir q4/3dr g4brs?

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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 equivaln b9 r7iiethv z;mzy3 gk+e4))ent capacitance of this mezzik 9v)ghi4 be 7nr3;t)y+combination 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 4rusu0 pf5 jh4nqc 1*zin series across a 12.0-V battery. How much charge is storq*c45 zuj041uf hp snred 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 acrossd-ys 8 ) a.l u-0zxknlmn2a9yg a 12.0-V battery. What is the potential differenlnu08 -snk-a x)aly m. 29gyzdce 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 a2e3c l 8yomls8cross a 3.0-V battery. Wham8solc y3e2 8lt is the voltage 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- w ,ulrfxf:/hyhswb,wxl* 1(/V battery. hu/w(sflwrxf,*l1 :y/xh bw,What is the voltage across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in ih9h 5) xlc 1vt1p3pqlparallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fully lq1cv 93h)ti1lhpxp5 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, and this pair isatgui,t.j vjnv)14;cky 4z.t ; wsog* then connected in series with a 30-mF capacigyts *k1,i).gjat.4t w o;nv ;jvzu 4ctor. 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 parallel. b iha oco w 5g;1uw1v;s9t)n,3l,7 zr pbtg:wwThe combination is then connected in series w9,s ugoprbo g ;lwbi1 5nc wwz 3),at1t7wh:;vith 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 1 5rwa.0v ga /ahihte68.00 mF are connected in parallel. The combination is then connected in series with a 12t whe1i0/ av6 ahrga5..0-V battery and a 14.0-mF 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 in parallel. Thu nhsy.o20q58kn+vqy e combination is then conhku0. yv+os28ynn5qq nected 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 ch07uwq5 vjnh6darged 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 or1/7nz;9cqtyc)c g; :oh:u tmkj xb-charged 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 connectn7nv,s x7 hw(pwzq8 h-ed in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is ( x7p 8h-snqw7znhv ,wcharged 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. u0z, jf-ytvtb3de8v9It is then connected in series with a 3.zy8duvb fj- 0t3 9tve,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 resistance -vb. g ri-7wiisp62lrps30mkof 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 coi3nnz.kmd * ri5ty 5,rnl 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)v,/dfi ld 7by 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 6y88; kmppzrh 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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