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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 th(bt -wsxg14x ve terminals of a battery, when no current flo4 xsx(b1g-vt wws to an external 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 between0cftgtqlm)1.22bd*1obhk,jsdq)t i im,e/p the terminals of a battery, when current flows to an external circuk10lmbq ) , fi*jogmb1/dpdi qht2,.s c)t2etit, is 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 to a br/8)th h/b:j m)onum5 b-dexbattery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connecte- vq to-/crdqn 3wq(82chfp.sd 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 series to a battery. If the current rzn ps *)4e9rlof 12 A flows from the battery, how much current flows through any )zepl*s rn49r 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 psy m3,*x9awog4y/sso a 12-V battery. What is the voltage across any one of the resistor9mx 34* y,paws/gs soys?

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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 9fyc :x +yc5p.j: z-vsjbabk (series to a constant voltage source, the power supplied by the sour 5+-ka:vb .ycs:zjpj (9bfcxyce

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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 resisthq 7nl1pa q/ut 05y1di ou0zy)ors 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 can be certain ts j63 (plcsti2hmla x( vm;32chat

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistbj g.4bkl *bojd,bfc )-;wvm0ors are connected in parallel to a 12-V battery. What is the o,wjblmv0*f4g bbk)jbd c-.; voltage of 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 i/jesadj v*frr;6w1w - h27kufn parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistor /* rhe617 wv us2j-jfkfaw;drs?

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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 gtobx;4.od); *grq.rrx)u /h k tw6woare connected in parallel. What happens if one lamp burns out? (Assume negligible.orrd*/; 4wgk 6bxt txwqh.;ur oo)g ) 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 voltagea2u7 dv/lhvh w4)c- drt05j :n0g0 gmyxvguw- source, the power supplied by the dnymx r:vuw 042v)ju/0h5 - 0d glagt-cwg7vh source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identica di1y0l :8zpnzjaw*: al 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 parallel jnzw* 8z i:ap0l :ayd1with 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 roj;f : x7fno)dule.
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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 ruonmeo: od(.rzig1m 4- le.
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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 :mlqesnisa0 f * h:0(fexample 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 iwn)f yw*wbyru+l9 b9. s 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 vlj7f98 /hl-tcn4b fp: n pcay)4 ffi,zalid 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 identica4qh*s- .r/f riqtmfd 4l storage batteries together in series ("+" to "-" to "+" to "-"), and place fi-f44m r/sqdq h.* rtthem in a 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 bat, :;f zrjwrs5mmq) 0zqteries together in series ("+" to "-" to "-" to "+"), and placew)z r:qmm;5 fzjq,0rs 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 batteries together in pi+a,g qx7p ddu69osm,arallel, and place them in a circuit, the combination will p do9+miu aqgsd ,xp67,rovide

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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 inx q5dr -kyw6z( 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 se-6dt u6rzz7h c-ufo hk j5(m8uries, the equivalent capacitance of the combinati7cht6z-r5 fzuk-u8 d 6jh(oumon increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitoqrc6t.dh 7 kdcfo0v0f,sn12urs are connected in series to a battery. If a total charge of Q flows from the battery, how muc0sdoq ffc1tn0d 6h7kvu 2r. ,ch 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 wy dr8vbddqy (p *8f8*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 are connected ap y:k*ll11woin parallel, the equivalent capacitance of the combly:okp 1 alw1*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 akaun+, g f t:rz54tw3jr8k3bto a battery. If a total charge of Q flows from the battery, how much charge does each capacitor+ :r345zj,rt tnwk8k a3uag fb 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 thoy.udnsoo o5/ z - .(zp;(4hnlfp g;wbe quantity 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 cons31obw/e nb1d.ob q8zctant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitorc8d woo3n 1/qb1ebzb . 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 ideal battery of conse;uev ioi +o-1tant terminal voltage. At the moment contaco ;o ve-i1e+uit 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 w -uyj 3lr+tp-series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage acro pjytu--+rl 3wss 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 shouldeyasm t)9z 1dr91g1wf v;3n+e 5mpfhv

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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 addition (nm q: -hj8n/ tk82nciht0 bpcof 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 obtainedh5puixzu2(2s su:m xsm .bf7 1 by properly placing an ammeter in a circuit consisting of one resistor and one battery. 2u2ix mb.751ss uzshu:fx(m pAs 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 shunqdlg l:n sr 19r+xk427hot f;ft 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 amp+rt sozu f ,(:l6s2j46qnj er2rj: c 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'u4k) 9t3jl cvgs0dv0m3j:rw y s 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 h95x(urwt k5fvv.r:zxy8m x) nl :n 5ca resistor. What happens to the total current flowing in the circuit as a result of this :x(v x y:m9zn fh.c5n5vwk5t8r urlx)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, and a voltmeoy qft;(oj -9eter 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 resista- qtef9yo( oj;nce 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, andzzp k;i-a th9( 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 voltmeter reading by the ammeter;pa(z h9t-k iz 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,fk m(ooe+p:k9 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,p: v nm1 ,kmhmv1k4z(c 12, 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,in 1f5wmjbddv*)0o / w(h0fvb 12, and 6.0 $\Omega$ are connected in parallel. A 12-V battery is connected to the combination. What is the current through the $6 \; \Omega$ resistor?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combinati jp gjpa-* y98ayu-w*fon 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:*g7nbvmj*sf eq4. ;io saea series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel comx08x7 knrh92lgb7zxmr xw-- sbination 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 comec2g)4+jmqk;hi ,8w+avxf )s, qr ugebination 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 w2/ .bagi vjk;evrn ;.into 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 appliances are connected to a 120 p mjd+) qo2gznelzq7jf w.u7x*86 ;zk-V circuit: 1200-W toaster, 650-W coffee pot, a;u mz2z*f .lz6 q)wn 8d7jgpqo7+kexjnd 600-W microwave. If all were operated at the same time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum num,:goju o8uanya9/yo01: 8 et nxw/vdc ber of 100-W light bulbs you can connect in parallel in a 120c nxu :0go8y d/aot ,yw u1/n8:v9ejao-V circuit without 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 6qxia bz oa-h5yb5rv /uw6-k mre4*/w $\Omega$ 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 andtvusu:d z5z1 ( 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, 6.3p2ottemna9,a7 xk5 *crzdw 80, 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 4vr+50wsnblq a5r1q*c 1fmc zand 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 9.0e,u ooq02s 2kb $\Omega$ 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 li u chrdj.*ne,xoa0).o8 5us.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 resszecmf4. 87i r5f.qicistance 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 throu/d9ys xmib+ p :(5ygiqgh $R_2$, 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 Fs/6kty may 5(3eqqo:+fyy)+ cc oqqp0. fmyn3ig. 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 Fi0k-bnt:mf 3hv g. 19-4, 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. 19-4, determine the current 0vg d26c 8veivuit8v 6in 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 curren5 fj/pg 2fm/sct in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to poinga x6q7lvsos j /7cq/8t 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 2(t8m5bs cbry 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 uj5 +mzaeh12b 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 Fi 1kr+fys5z krwe6 (jnvoua5 u u-z;g62g. 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 Fiqjurl eiw 8-4:en/nzme.c ) /kg. 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 thenaqsw /q ((onw)ji m(2 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 ro6 a83ivk: hpin the 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 4 r/t5 zzi+;c9 yu. bn*qvesyt4$\Omega$ 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 12 9/kokisy;z jxl 71uv+$\Omega$ 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 /q,kf9xz lmtgp3 t/b 7the 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 inst)v. (tch()pw5am (:ozs. pgz(mk rt the solid wire connecting the upper left and lower left cornermagm) :tzcv( .)opp(skzw t5( r(hs .ts?

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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 capacitanz ui7s1os x*)jce of this combinassu7)jx*1izo tion 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 se+f 5+v6)l.uxcwxyz/kfhqkx , ries across a 12.0-V battery. How much charge is stored in the 5.00-mFw5 cfzvl.u,f x)++kkxh6y/ xq 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 qj)a9zm1s/vfg;x x2 xcapacitors are connected in series across a 12.0-V battery. What is the potential difference across the xa29q) mfsxjzx/gv1; 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 s qht*h/*for,x eries across a 3.0-V battery. What is the volt fqtorh* */hx,age 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 capacit-h g ya9jty.u7or are connected in series across a 3.0-V battery. What is the voltage t 97uy-ga .hyjacross 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 parallwd7-tn/; -/nq) kckeq3hzfnn el across a 24-V battery./k3df)/nhn-qtwne -q7 k; czn How much energy is stored in this 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 connected in parallel, and this pai83hpshb,51rg op6gi7r,f e wsr is then connected in series with a 3,hhopr 5es8si,w317pgb6g rf0-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 cb8( dhww i o)k94-agry h7o a5og9,tkconnected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent obko( )gcgd7aro 8kahwi9 5-h ty49, wcapacitance?

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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 in parallel. w/blp4-pc2v*x xhy,oThe combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. Wh/lx,v*4bpxwhy -c2 poat 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 connecbe38j9ngx8 jv 1f 0jsuted in parallel. The combination is then conbf svj3 gjj01 8x98eunnected 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 cha)2yrjg p5x(m4,dd qmm8 lprq(rged 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 thrch u*iqu jh7vr d)vaj6 mto+kos(74up ;sw3 +;ough 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 wit,ekm9 fqdomfq20 1ewy;v-v : rsvw,; hh a 0.50-mF capacitor. The capacitor is initiak: e;fsvqwoy;1r v0,-mv m 9d,fqe2whlly 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 connecteteoyv98 h b3p+o x)v bm 9vw.gbd85zf+d in series with a 3.vovbb88 zptb+w.9fvo)5m x 3y9gh+ ed0 $M\Omega$ 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 res8dp-a, glp*v.z18x9 rnzet v v9lksu)istance 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 2w-xdyg wwejoy b;o: h26h3/h)4.0 $\Omega$. 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 interw p/a yu)/;yfhv- ;ivqnal 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 1ub6 qtuvay15,- he-tt dkj3f 8nup-ia coil 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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