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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,5g+q7s1g 7bze4entpip) hxb; when no current flows to an external circuit, in 7s+;pq ihbbe1g4pz)7e gx5ts 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 termpk0+ 0n3evwfz nk:6feb) z(xlinals of a battery, when current flows to an external circuit, is referred to 0nz+ 0nvzwb 6 fke)p:(l xe3kfas 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 c4tc+u2mxg iedvu e5 be),y9v2onnected 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 nix r,;o5,f zxseries,

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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 conhe0q 5:bvxa,d icb ,0inected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one of th0e qx:ih05cvabi,d,b e resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 124:s rvsw,:* h1sgmwjj-V battery. What is the voltage acr:w msw:h 1,j4ssjgv r*oss 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 constantxb nx-n+9 id*t voltage source, the power supplied by the sourc xdnbin*9+x- te

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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 connecteczl ,,lj((,b vbdj*(t;np flrd 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 cerga xp+efh 5,f8tain 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 r-rouury,p3e9wsl8n )+ 7 g ctin parallel to a 12-V battery. What is the voltage of anypwyr 8ue)r, +u- 9n 7st3grlco 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 parallelv7 3x;l/kbp ,dkrbl.:*. ymyyg fy-hz to a battery. If the current of 12 A flows from the battery, how much current fly; ,m:gfylk b .*vy3kxlzyhb r7.-p/ dows 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 ligh hoeznpd*wct/5ryc 7-.4 8o4g: tbepvts are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wiren*gbh7r 8:eovo-./ ppdtcytc w 4z5e4s 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 jq09 qf.*brxnv 2fy*hwk1a v:a constant voltage source, the power supplied by the source: kv*12* af.q wr 9hqb0njxyfv

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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 te g)p/sjr+u2( if4kl R. The maximum power each can dissipate is P. Two of the resistors are conne/e g) j4tu+fskr pl2(icted in series, and a third is connected in parallel with these two. What is the maximum power this network can dissipate?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's juncti -y j 0a,zl,:ewkpvb) bui0(kron rule.
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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 qc 4nb+h ;2z9trj :gqw2nepq9rule.
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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 examplh5.j-h ilq.yme 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 example igrvvls q v oyh(0.)y*ga,.9 uof

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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 t3u+lg iahz2 z*he 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 ste* d/vk pl1va7q*a gfsaagtvh:.) n3:orage batteries together in series ("+" to "-" to "+" to "-"), and place them in a:* a. g/vest*vh3 k n:glqd1vpa)7afa circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series(x;,6pjm.h(5cfavln ag lho3w jo aj 7+ 44mtj ("+" to "-" to "-" to "+"), and place them in a circuit, the comjjp(jn jxg6m3ahll(v4oa mt w7of c+;.54 h ,abination 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 p+1ontl- a br2llace them in a circuit, the combinati1o+-lnlr ba2ton will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connects+gfs;/f 0dqi ed 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 c(ovf( ,s qkio:onnected in series, the equivalent capacitance of the combinatioo:(v ,iqok f(sn 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 serir9 rihl,a7km r;s*4ives to a battery. If a total charge of Q flows from the battery, how much charge does m9vlirrh,k*i ;r74 s aeach 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 connec6 ap*zhvrut, g-* c 06yckaju8ted 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 are connected in parallel, the equivalent capacitanw i+2b 5gr2zoxl (ukh+ce of the combination increaul 2o b5(rgzh w2xi+k+ses.

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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 ajai t*a l.igy5/ea4.n total charge of Q flows from the y*i ag..i ean4a5lj/t 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 h,;nsbirhv- ui4auc96ni5. u 6j ytu9quantity 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 ba r,jvzdl; tl3h l73k8sttery of constant terminal voltage. At the moment contact is made with the battery, the;l vs8h3r3t l7zjld ,k voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an-jlavn:+gl xcpr4 c 4, ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistnl4cj+gvrax, l p4 c:-or 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 battery of consta gl xihjox4;rnj+zg 8v8o8v.5nr8lhj g8 vi+v8o. xg;54o xzjnt terminal 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 shou9 v:b/sq,.o sq4 abvxlld

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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 ,)z up9uuea 9zby 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 q8. ikxd/bqea-e (dl fp/xw16ammeter in a circuit consisting of one resistor and one battery. As a resultxaxpbd/8 6-/l e.ke i1d wqfq(,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resista.jnw5*2sks 3g ge b*vj 5qgt, i3iwbu+nce of an ammeter'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 normalcym8uu6kr92g hj ((:tc7bgz1 qv(*ub0x t vhv ly 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 0f0 d+hr pnvy/gp:j3h1obqxk6rz,3w 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 across a resistor. What huj uov 3+y-l ;uk24djtappens to the total current flowing in the circuit as a resd u2lu; ujyo 3k+v-tj4ult 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 ;tr8*145cb jw+pdob ch; gvxvwith an ammeter, and a voltmeter is placed in pa ;wdg o8 rvb4;tv15 +bhccpxj*rallel 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 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 se9ry- gas at(l0ephz q3vc l.(2ries with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then coy ga r32s ((0p9l aevlz.qcht-nnected 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, 3.0,iio j,kalo.f z rxdt6:qx.; 26 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6.0-ngul)rcrz4aw 0*n 5p $\Omega$ 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, 12ypzp8u j8v jy7 339jou, 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 c 9dtf u6*oe klx,ylpq i3,3f nkp2z5e5ombination 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 combinatjel 01h dv.jeuaig2o./yfp l+p,0+cgion 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 p;7ghk2p x7dqkpx(*rparallel 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 combination of a 4um; vds-*+eke5dk pbwg *(pfb6 -zzv4.0 $\Omega$, 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 inrv95 ;g 41ip *mfovvhoto a parallel 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 a5ok:iys:ksd3 rhe7: ( qyy lp;ppliances are connected 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 total curreqh(:ylyro:i:7y e 5s 3k;dksp nt 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 -8f9)zve3c2 uz nz60wj q 1oaya zodf7bulbs you can connect in parallel in a 120-V circuit without tripping a 20 1zcff 7)2 eo6 jz3w-9unyvd0azqazo8-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 2.0jx,4onahzg+ 32 td6ozmmm g)6 $\Omega$ 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:*f: o0qwpc.n ;pz rqd 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, c5no*bc pe q f +, xeoqi/ua.0(dg.fx/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 9u6zl ygadh4952xa rx+ .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 4 ui nb1 mb79/pk;ijigand 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 9.z:ol1r4gl vc8,grcm3 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 resistancrkrh((xcpb3k: l+et- e 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 through .y67 ckrdt wo0$R_2$, 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 thehwn i k 9kzu9usjboe0.;3vk*2 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. 1x,u,n 8j gyo+14gllfv9-4, determine 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+v / 4;eeskcqi. 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, determine0o kr)dh2kkdvg(- zj9 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 rely(7tn1ecu4y k8 wzwa m e/wo p0*+jdwd) gm*v: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-zfx4 *au- alq of point 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 toiw :g(f-s 0st +e9cg;r agpb8b 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 bo) 8jemwz 8sr(d-1j4taoj ukmw.lp7/ attery 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 po0 qhj+mo.q5 ycint 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 ;p+mpk k*;woz:odu, q 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 lk (*ca9/u lz92.qfvrj 3wjby8 $\Omega$ 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 current6 vjf+n*r1 sxp7 q.wjt 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 tvm il ts/v3u(9pbo kfe :o43l1he 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 io ;ba;s, zffnx:b9 (zocd+6q 81qdg+xxlp2dtn 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 t./f8 kuu *(-z2xwr:3ne c7ykjfwglhh he solid wire connecting the upper left and lower left cornef .n f(8xk/*z wljhr7wgyk:3eh- cuu2rs?

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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 capacit+ mng,/ 0cnxtlance of this combination gnncm l ,/x0t+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 series across a 1 -pci9g/ ukgz5+kdos 3y)k ts42.0-V battery. How much charge is stored in the 5.0 dzikp5 /y 4k-sgscto)39ugk +0-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 connec21sihyth3 t, uted in series across a 12.0-V battery. What is the potential difference across the 10.0-mF capactt1,2usiy3 h hitor?

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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 connec7 )uj wbs.qea 07g/3lvq;aw ryted in series across a 3.0-V battery. W w.brlsey)a/a37;ju 0qq g 7vwhat 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 serm)oeu 1zj+u o(ies across a 3.0-V battery. What is the voltage across the 2.0-mF capzm u+o(ue)1 joacitor?

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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 connectedq712.gu,cwkx1s6q ez cqzh d9 in parallel across a 24-V battery. How much energy is stored in 97 q dz2cs1ehk6u qqzw.c1 ,xgthis 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 meeh6y.i7k6 jl 5vmnoa( 5zvj3F and 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capace 7kz.5h6 ml j5(ijvey3ovna6itor. 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 cgvo.*gw9v3o6spn1a (bf q r-u onnected in parallel. The combination is then connected in series with a 12.0-V b (wb 31ngu* -voaqvrpos.96g fattery 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 are4vja,d)o+dgp4, ,guysa qp -y 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 charge on the 6.00-mF cqdu, d ys+ga4,ajp)4 p-,g vyoapacitor?

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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. The combinatio+4*ont drf tgb8ghqj494cp3l n is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. flnt 8*c 3pjqt44r ho+ggd49b 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 charged272az/wsp 7jjzwkx,b)uwf, n 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 the1vas1e +ffaw3tjc- 6yn 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 with a 0.50-mF capacitor. The capacitox lobkv) w*dc8c6-t/:c,f:7wj h hewi r is initially uncharged. The RC,/- cek 7wjo8cd)6vwhb :if tx*cw:lh 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 ;kjbx*jp/-- r/j9 wbb ;kvumcto 6.0-V. It is then connected in series with a 3.0 bb-m*jvw pk /bc krjx;/9 -ju;$M\Omega$ 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 )e9t.6 bqs+ nz v*,lje8)1ls nmxter o100 $\Omega$ 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 resistan .c+ 3bj58- ln5itqtktg vq/npce 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 inuro m6h94a) zc; gyvq*ternal 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 resiste3 t u-ah*oes h(e) lh;kx,o.pance 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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