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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 w4.qc g*x 6lqz6;) e1pnubza kflows to an external circuit, is referred to as )u4n xzz;q61eglwak 6 *p.qbc 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 terminalsmml g /b4)exx m0y5shyi2-el+ of a battery, when current flows to an external circuit, is referred to asy5s+0/ h e imgxx42)ym b-mell 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 resi/g (wa :ccz7austors are 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 connected in sehpr 3yjuy-t+/.of) jsries,

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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 currentivsnen q1(d,1 of 12 A flows from the battery, how much current flows through any one of the resistq 1iv 1ndn,(seors?

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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 ;sormbqv-tax nz q*34yl7) rhnwx891tc 1x7i12-V battery. What is the voltage across any one o;7r4xy c1 h -rq3i9xlznto18xaq)vmb7 wts*nf 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-c9-3bij4 nqmpfl2enh o1rm, voltage source, the power supplied by the f3-4lrc-2eh pji qn9 bn,mm1osource

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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 mhhjar3 n96xsp9d) 0 iconnected 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 conne*db 7: b7djlructed in 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 +pd0tzow t : tqu(2suqn /:hi4parallel to a 12-V battery. What is the voltage thp2+u:sotq/(:nitwq0u d4zof any 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 battery. If the curreny vt* whqqq3y j+o6+k(t of 12 A flows t o *yvk6jh3qqq( y+w+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 parallel. z(n 4vdndoh,n ;y-m+bhcy3* i What happens if one lamp burns out? (Assume n,modn3; bvzn ( +i*4ynhy -cdhegligible 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 constant v9npx6z*yyr wn;- .;vloesy;c 6h z:zvoltage source, the power supplied by; spv. hl;*nyvwoyez-6z;cnz:x 69r y the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical hxg 6mobny8 o qam6 y6j,k1t+xr p)s7)resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parah8xmktpqo7nxy))6 s j 1y,g r6bma6 +ollel 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 rulfuynw-,fweg3 y9y: 7cgz:,ws 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 loo2uz ;ss(8o kapp rule.
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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 examplsr *hek1 xit2z2:x+m/atb9u ne 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 1jro 68,x+z h(ao9cedi r 2fxsis 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 r+ dy5s-a mhsd;fa6hu5ur/ 9zhere 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 batev2 q1c7wk+fa6bpk9i+oer m4 teries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination will prcb p ei79kr61+vfao+qwe4k2movide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" toufp c+5 y*pq-i "-" to "-" to "+"), and place them in ic +ypf-*pq u5a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in parallel, and pl 2u;i 0om,yusarwt*e2 4edb/ qace them in a circuit, thear,si2teuweb *2 d; /04yomuq 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 capacitors areopg4 7ni:4: q.il yyqq 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 swf0q1d2 pya8azv: v .ygp 7)cseries, the equivalent capacitance of the combination i0) y qzva1gsp d:7cfp2y8v.aw ncreases.

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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. n78611d o( eiuqcgj2b xp1q/u)xuw jm If a total charge of Q flows frgpj1 webq( nji16/7 qmxo)2 8u1xcduuom 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 ar1jak.huct 2f,j y746qwqe.i re connected in parallel 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 ar1dw, f6s q*rj5zfu)wee connected in parallel, the equivalent capacitance of the combf u,esrf)6*jwzdw 1q5 ination 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 battesfi 5k41cu;oury. If a total charge of Q flows from the battery, how much charge does each capaik u 51fsuo4c;citor 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 quant0izz75o 1nuga 5uz2tg ity 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 connectsk):v8szb ch(ednnq f (75 /cped in series to an ideal battery of constant terminal voltage. At the moment cnqs7b v( k5s f ccn(zh8/d)e:pontact 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 seri6kpy1 tagb+/ qes to an ideal battery of constant kagp1b/yq+6 t terminal 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 pgxm j8 np+):fez01 fran ideal battery of constant terminal+xe 0g mfn1p j)r8pf:z voltage. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter sho six)1yj:p83 91;rri mhspujwuld

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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 theucyo q wvlvi3nez78 *v5)g)xl .l4ce 3fs,z-x 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 ammefp lfs f0jj,r 6w3hk 1k22pq5pter in a circuit consisting of o rffq6k0p, p lfh2k1w32jsjp5 ne 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'shggkf8 rjbk*:t:c+z( 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 f7c2 1-nw1vepcuilf-f s /qi2mrom 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 qhp+xcf - 8mz1c/dfh. series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmeter acros t6 ostdbke*8f;/uk2ss a resistor. What happens to the total current flowing in the circuit as a resu8ft;esstk*k2/b o6udlt 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,s,cpr4idef q;w7a1/ e 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 4 7,se;raq 1p/cifedw 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 vol16g5 vaug)h* a2kvzl itmeter is placed in parallel across the resistor only. This network is then connected to a battery. If l5g a2hz6g* 1iv)kavu 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, 3.0, 5.0, and 4.0l v4,cljkplow0cy0/0 t*srf8 $\Omega$ 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, a)jkh+ zk-zn 0xnd 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, 1ht ;it9 oi nb33i)wxv32, 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 combination hf*i:ki6 j770ktbk2f slh vu*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*dc8zmr*nkb y/fjck /:3fc *sw-wr *f 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 intovyb1s* ,umm7c fq6zc 9 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 combinatiozaboy)q z,81vmy 6 +fb3)c1hintjep5 n 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 offbldxue1e6 m (l.qt8um7 te8goq )4 w3 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 toaster8oh;8m bp7jr7 vx1 ae4 cbxxq:, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they drar74 m1bxacvhxbo 8qepjx: 7;8w?

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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 ini)tvxi (d+o9hc/f ; r s(c(ike a 120-V circuit withoki( vercd 9ch+(/sio( if ;xt)ut tripping 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 2.0 nt*i 4+c4q.jbj9 lfj s$\Omega$ 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 aa/9iv ( jy)hkfv 5k g(0o2e8j -buyyernd 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, 6ucabkv 4r( ue56z f7*;k qez1awd5ig7 .0, and 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0) y kows/g7e 6+pg93ozeyf72b vgxwm0 $\Omega$ 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 ands(.-5pavg0 , vi+mfp3 od qgua 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 and 9f) , t4ifoj+b/tedlq9.0 $\Omega$ 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 qq nirc1mj n*cvbekgglb;s( 62z0c9;g: *vr8circuit 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 throug:y mn6ix wu;n11; hjwoh $R_2$, 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 mja ; 9 2mub9o/ed1abwin 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 currey1p h luv,4os*gx/lcz*v* a5snt 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, determiay+(s8/6xcyj ckn 7qzne 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, determine the current in / nx z.dl nx9r rhw5s0luzu9mn l6)u(3the 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 rd t8+elmtzz8-elative 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-izz2sxdoyfn5rv b9 361c dyc o7k)u: 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 p,8uz7hg 4 wcfv fq 4w5y4l)5zlz 0uyzcoint D relative 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 battery in Fig. 1s(og-i05vaq2 ycd vbjm.0 ejc4t 1k+i 9-5?


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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 poa1/do (cfc 9taint 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 ther )fa)j.9ye 32futtoxn6jxr . 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 qasf v c,/mubao,qph/14 x1p-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 veq wn 4/c/aqq)no a2j(bpqyq 1(.z 1w$\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the *.s27nvl0 6 brffik5 m5eqsht12 $\Omega$ 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 i-8bq nq(2pm hln 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 f7 tqb)bg2iq1ia tdhpe2 q2+4 hyx76 qwire connecting the upper left and lower left cornei2t4p1dxh bg e7a72yiq+6q) hbtqq2f rs?

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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 capacitan wn.)a1yyk3pt7 cg88xm x6yiuce of this combinatiox1 8 6 ay8yi3k.c)mutpngy7 wxn 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 in htd/ zs .tn,f*series across a 12.0-V battery. How much chad*,.f s/tz nthrge 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, anuc:)bv1sm nuv. ,3gqg d 50.0 mF capacitors are connected in series across a 12.0-V battery. Whqvnucb3m : 1. gvus,g)at 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 serieu*p j/h1tq wa9s across a 3.0-V battery. What is the voltage across the 1.0-mF capa*1wtqh a/p9u jcitor?

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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-mgn)f1 2y6 unweF capacitor are connected in series across a 3.0-V battery. What is the voltage n yn12weu g6)facross 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 parallel acn3(zm j0dw: t )eolvq+ross a 24-V battery. How much energy is stored in thismwqez(n v0 3dot+l) :j combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connec+k5 rr c t6;,bccmp(fited in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangemenir pc6t5f,;+cr bm c(kt?

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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. Th x:qi9;k*p lo+doevx bm f9i(5e combination is+v ode i9m;lk*:( x9fp5 bqiox then connected 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 mF are connected inf3t 7tpp ey *,nvl346rrzd4oe parallel. The combination is then connected in l7re*v6t3rn4tpzy4fopd e, 3series with a 12.0-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 parac wov5c;sc3p 4llel. The combination is then connected in series with a 12.0-V battery av3oc; c4w 5cpsnd 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 chargeb;s78)uf8v2f zov+xxt h l nk7d 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 then discharged j-iy(kxqy.jw j,89 fr 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 t c:fb/0smc)vcapacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the ctc f:c0b/v)smhange 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 serqzpp6;cca/0nr m95joe2 uvi/ies with a 3.0 /j2 6m5oqip 0a9eu v;rczcp/n$M\Omega$ 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 of 100 kr7z:e:j,q3wsct2z/ b kwrp-$\Omega$ 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 )e7jc y)em0li$\Omega$. 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 g8m iro: wy6s 6f (o0-bvx;:8pxbxk8ars 5 cfsinternal 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 of 40.0 9bi.mqa+26gp-j+f/cq3-8 tu orgyrtcj:f yu $\Omega$ 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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