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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 drkb2g j11m l)ysjok -, zr.5vcurrent flows to an external circui d.5)kmj ,z-v1sk1o2 jl gybrrt, 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 battery, when cqau-ga p82g8 bvistm((/j 3knurrent flows to an external circuit, is( (g 28isjp3m/agu t- va8qkbn 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 are connected in series t6cvv(a ,g.br ro 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 conne:psrlfj2kg2pm *d7 .icted 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 serieiluik 1;l;9 rynom+ a q:lb,gxw)zp -.s to a battery. If the current of 12 A flows from the battery, m +1k)yp- :zi;wllaqr9 i g;.n u,bolxhow much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series t.+ /urhnqut- jyd,4p1dvc mp4o a 12-V battery. What is thu 1dm. qcv4 jnyp+4ht/,ru -pde voltage across any one of the resistors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltaozr 3o4f 7gb,+e;ez 9hhxs 7vege source, the power suppl37ov 7 4r+gobe9;fz,heehx zsied by 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 anlr o7mo;ne655 adz4yom-l3bre 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 certain yiz a *pyc)c*fx:i74 gthat

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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 co xirg2g2 go)k4nnected in parallel to a 12-V battery. What is the voltage of any4 grko2gg)2x i 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 isc s:js4n)b-t, s,byconnected in parallel to a battery. If the current of 12 A flo ,-yi:s st4cjb,ss) bnws from the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connected in cw5j q*,mgs; ag)p*z3u j(fwsparallel. What happens if one lamp burns out? (As(jczgs5q smp)j*w;3 u gw,af* sume 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 adpzh ve-cm.ybkw6y9 by9(g6-,ycaq0 o ded in parallel to a constant voltage source, the power supplied by the souky-eby,v9-c wym qpgy . h(o69b z0c6arce

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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. h2oiot- mch,b:sn : ,w The maximum power each can dissipate is P. Two of the resistors are connected in series, hc:w:nm b -s,ot,io2hand 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 rulc:ui :9: d9 1cnkfqd)ouism(fe.
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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 ruleu ,xw3 q7jl9rnl8x4b a.
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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 k/uh8.h 7 grrazf-mlrt 9f3y)is 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 ek,* a wy g93,k5tbk rowz-; hdlbxnv;4xample 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 herq; r)q;(r )gnljv oi2 vnvogn56*vmy 7e is valid 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 tlc* /;cgbdi:kjf wy l:aaq; kr8q79s/lhe5 /cogether in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will p sa7b/fl8/ q : *ay /q;kceg;hkdj:lcrclwi95rovide

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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; e4,tlaufqn/hio8.qsorf0 8 ther in series ("+" to "-" to "-" tt48,e ouoqf r;/fhaq.08 ls nio "+"), 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 batterie *-v+hzg e-t2k,c )cvijuvd-es together in parallel, and place them in a circuit, the combin cve,*detiku-c-+ 2)v-g hjz vation 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 vv,:0.pvlu;d7ouuk.dc.olc 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 * hdtqzqwg7 87connected in series, the equivalent capacitance of thewt8z q7*7gqdh 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 g: v kj3n,6ekcin series to a battery. If a total charge of Q flows from the battery, how much charge does each cap ,ej kk3v:c6gnacitor 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 par)l/q9m ipuvldw3hqw:/v88 h vallel 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 capacit7pb0g d krig3;ors are connected in parallel, the equivalent capacitance orggi k30;d7bp f the 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 capacitorgnr, gwn*2zo.s are connected in parallel to a battery. If a total charge of Q flows from the battery, how much c .,ggz*w on2rnharge 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 qua -frscw,b( v:) l r4u4tles6rpntity 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 swslg.)9zff a; h) v5r):zi luweries to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltagliwwzr: u9)h5g)vs.afz f ;l)e 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 co ,o:ld.c x lr6;y3yojsnnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrol;3y,j dco. 6o:syrl xss 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 batterys+n wwyqf5 .w0b6:-mz qiqqe8 of constant terminal voltage. When this system reaches its steady-state, the voltageebq:mq0i+snw8q.wfwy5- q z 6 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 should346yn eqm 8rx8uhz ,qk

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can bem*v.e.w(qw +xr ax77sgerl0h ia5y1 v 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 c(kjs(,wl j /zyircuit consist/( (wjzlsyjk,ing of one resistor and 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 sh ;rf7f )2qzf:kkjnd9junt 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 (ra8c qmt (.lea voltmeter from a galvanometer, 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 ser9ktr 6 emst px:ut4f/,n/ox/ pies 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 placing a voltmeter acr ql rerz139ce1oss a resistor. What happens to the total curr r9eelr3cz11qent 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 2cs.vlts-x5) u(wvxlin series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed acros u (tv)w2cvl.xx-ssl5s 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 ammeter, and a voltmeter w ugnv +1vqjvn2j,n* (n m/b)fis placed in parallel across the r (j*q n nn/nfvmvj 2b+wvg,u1)esistor 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 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.azrut1mdk- 8 90, 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, cu,z u:m3 a9a8t8qefw12, 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, m2r 4do+ aqsm0,ipy*:r ctg5mand 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 f vb f+7.vvm7mxw/ /rna series combination 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 of a 3.0 annuczz1nxj .c4z08 6$\Omega$ 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 / (kestrp1ym*a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combinatgj6s3*xs.02j7fkaq off) cbh 8g 6sxsp u,t1lion 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 p3vj w1d+vjek5 arallel combination 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 connecu8udhs j ) 0at)b-(qthted to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what totat -q )uhjahts)80ub (dl 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 cj il9)5hlt 0cban connect in parallel in a 120-V circuit without tripping a 20-A circuit bre)l tblj 095ichaker?

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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 sa6bf(kj/ :d+dq;p he nx aq)*$\Omega$ 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 c2.af;c,/a ;kv cwbyh/ e7syjd2bn 4j 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, k4x3sacmf7 wm7.x 5dva3: g rrand 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 m:)j-(h us,rffa; rlo and 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 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 9a0 p 6h f-/l/od7vrdco.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 and 90p * y4o vo,zmy 98yszfo3uoglg0l*y6.0 $\Omega$ 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 mg w 4.jvyd, dm2q7::rhy*znf. 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 througf11s7eev/iwh80 +d r/bp8fl e crwv+rh $R_2$, 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 circuit in e2fwg3-o svh/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, dez/yg 10x m euqmjr;0pw9v)qa (termine 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. a)dp3v5fl jt( 19-4, 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. 19-4, degpbtpg 5 8 f-hy5t.,lpc4t+a * ciy4zhtermine 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 rel./i u+v+52 ;(pxpr-lwlvm ny hr;bkcf ative 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 relative to point C in Fi0 a9;m-vddhct6 wph3u g. 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 gpqlzqn6n 3l31.jaeym;8 f zx)j6h: b to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the bsb0g;9m;l cg:gjd z,7. iq jhfattery 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 from point A to point B in Fig. 19(7vsvdi q7q;p6yk;e 9j4lsuc-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 a333fc-j w wmtin 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 th7 mg+8mdch-az4aq3+nrl qw :c,h fe1u e 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 .ajq*pl65qfml g )e6k)jn9 kpin 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 il2/ 50bex4t*nndh/iuv3e k6y pka f3fn 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 e bz8hz4.)mx8 rj tbg.the 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 lower left cm;1b1v .xnxjo j7 +xtsiy)q s+2tiz*nornersv2q7x bx 1ti1s z nm+s i;n*+.yxtj)oj?

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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. k cs0dyf, *nibc(.v d64p2oly The equivalent capacitance of this combinatio*yp d46 d(s0cy,lk.ivn c2bfon 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 connyy;3br+(ji fn3q r /ddected in series across a 12.0-V battery. How much chadrnd + 33jiy;r (bqyf/rge 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 aa3fle bb1fvxab3 :4cg0e6*do :: sd awre connected in series across a 12.0-V battery. What is the potentialdde lbc 6 :x4*aab03s3:fo1 wvg: feba 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-mFv rhp ,.ba0z/1yvp/k g capacitor are connected in series across a 3.0-V battery. What . vvk1 gz/,0h/ prpyabis 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 6z0g2hlwk 4zwpqc2h 3a n8i8y are connected in series across a 3.0-V battery. What is the voltage acrosnya6 c 2z h08l4k2i whgq3zp8ws 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 capacito +zmi2dbd7a+km vybn7-ol 02 xrs are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors a2 vdk7d-za nx+bb+ yil2o0m7mre 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 arfhjkrwvb 8pltn5w;:vtk fz -p07 ,x*9e connected in parallel, and this pair is then connected invr k f 7,wv59jwnfx:t;hl8kt-0 pbz *p series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallr y e2klcup /ni0o5a-9el. The combination is then connected in series with a 12.0-V batry0e n-cku i9a/p 52oltery 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 connec .q4crofbl 7pw4j, ;fdslty,6ted in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is do7t,ws,.44f plf6lj qy crb;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 a 5pn)2lrs t;u-h:w ; . aw95+zhmqvxxosiy2ri re 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 capacitr9 i+hxm5;.v-2 r z2xw;) tw lqhsao ny5usip:or?

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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(ek (+fyfd 0rffc62th 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 charged to 12 V and jvmj*kup e:q5+*x3aa 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 wiv2nv*4 p9g +z5h 2 uef;amdbuwth a 0.50-mF capacitor. The capacitor is 5p;vhubn2v9 e4 gzwu*2ad+ mfinitially uncharged. 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 series w 3 zzjk6o0qk rdnov(:4ith a 3.06zkq0krj( :z3 novo 4d $M\Omega$ 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 int*mt;jg w v lww1b6f5g)ernal 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 24.0 o ,6kt-1w d94yqhs bfy$\Omega$. 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 resist1j x:,r)e vryejm7ed+ance 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 of 40.y iptpprw 5qpm-y rv *m1cxu m2(iub-,9jn;860 $\Omega$ 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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