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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 1)7oqb qe0ze l hq-g1qthe terminals of a battery, when no current flows to an external circuit, is referred qq 0ez1e)1-q olgh7qb 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, whezt ,y4t,d97xi vg,vc en current flows to an external circuit, is re,v79dzeytg,4iv xc ,t ferred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in sebm1 ),m:nh nxvries 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 connectekj/iq999c*l i0z pkvzj4+ , d ndbxqe2d 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 resi u.(oxig40kzb stors are connected in series to a battery. If the current of 12 A flows from the4og(.ub 0kzx i battery, how 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 resistoeoe5 5d3rm ie.rs are connected in series to a 12-V battery. What is the voltage3 e55dimre o.e 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 constantg/: um op/5kxh voltage source, the power supplied bxg5uh kmo: p//y 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 are connected in ;l* rvutt9.kfparallel 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, px-.) exh;3k.f5h.a atseln bwe 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 parallel to a ub(d./ ob yo vo 5-xqyld(c.i)8/sjfm12-V battery. What is the voltage of any -l)sd bd(mf/. 8yo5q/.x oojbu c(v iyone 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 resistorryc fy0u p) sk-r)((oxs are connected in parallel to a battery. If the current of 12 A flows from the-s porfc)0u ky xy()(r 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. j8nz3obj/ g; :se-9izmm mp. y What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.) n/9z8e-y:z3igo. pmmsb ;jmj

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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 voltag-/ vztojsve* 2dy(fla-0dh a:e source, the power supplied by the /oya a0d(-2j-vzs vtd ehl*:fsource

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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, ek em scwj8: vtl.ry(1:ach of resistance R. The maximum power each can jr(tk8e :ycw.vlms:1dissipate is P. Two of the resistors are connected 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 juabq wd*+ zs6i;nction 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 lqibs,a7kaf k.27 f 8b+ f8j4/aieec* gafp;arule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rulew d avz1)i71nu 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 exampledn91j8frd12o 6tphxpsot: 3 0tq6reu 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 5so3ypj80yrl 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 identxi apz1 zuab. 2q7k.j,.gbg.yical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combx g,z.qp.b7bz2a g. a1.ujyi kination 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)pc5:c phyzu*v(n+ b jhyd2( oteries together in series ("+" to "-" to "-" to "+c hz(yyp (ubc2p5)h:*nvoj +d "), 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 w6 gkj;3m4j*jt)zi7e-fy ( gwrvjqs1 batteries together in parallel, and place them in a 1j-rjvgf;gs( q 4ez)w63wjy *i7jmktcircuit, the 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 are connected fy lg:bm7cg /6ad q9*dgkq1k5in 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 capacitbda y+q.,g4dr . l 5smit6ns6tors are connected in series, the equivalent capacitance of the combination increasel4 rt 5d,6n.+ 6sqmasd yig.bts.

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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 serid,sm(12aiz6f1 w vsqq+7m ye) sm kfly;*p*vqes to a battery. If a total charge of Q flows from the battery, how much charge does each capsf)lqqw e;+*vdy k6ma zm1(sf7vm*s ,2 1 yiqpacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in parallel to a 7(sl *2wkys upbattery,

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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, p34ivd.5v y :dk3b/wqa w qgzj z4id)5the equivalent capacitance of the combina5iw/q)d5 g:4bz3a vp4 w v dizkyjdq.3tion increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacit6yrvrt/lqi1xlqe 4;t5(d;r kors are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capa/;vtiy5rdkx( lr;e l4rq6t1 qcitor 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 quaniq z(i)yt.s.rcwj+vqm .6o+t tity 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 capa9c7ekg*p)4a(+le kf6 uf bfmx7sn4qgcitor are connected in series to an ideal battery of constant terminal voltagp4bg +kxfq4 a9eg*s(fnku e6m77 )f cle. At the moment contact 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 connecte3 :9is 3 vkh;rx4naqgbd in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage 3n3 gb94xkivhrq; :asacross 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 connectedk*fea1(0 8rkg w /adoe in series to an ideal battery of constant tera* a8wek1f0r eogd(k/ minal 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 shoundgyk*,z;;9e sijn,vld

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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 tom .yv/hi:7iqy 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 c1s dk6 :x z,:l+;lx.bpunwleznzs,e 1 b3jkd5ircuit consisting of one resistor and skk uwsd l,lx. 1znb1: 5,nbx+e6p; ljdz3ez: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 shunt res e0twyzfr xb ,huezw2c23 4t*-k+d p0aistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construca.g*-gob ( wgot a 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 voltm+hq*dg( /cocc*fo ys5eter'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 if.h,;tkz(yl 5a/ qrpa voltmeter across a resistor. What happens to the total current flowing in the circuit as a result of this a/(tl qaip h,r.y5 f;zkction?

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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 vol+ x,00h o2/dymkggtw mtmeter 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 dividing the voltmeter reading by the ammeter reading, the value obtain,m02g0othk x wd yg+m/ed

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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, andn cj- oky8):d/rbh c*b 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 rerncoc8y-:hd b)b * /jkading, 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:* us lqc9 e4rod42/jx-ou.jjsy t i1d.0, 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 68j eq ik3,z/qocnw-26 g/jamz.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, mqqy(s5 3ax5t 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 okla4qfz h(+hugu* -+jf 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 sm:d8 d*d2xmp .ftb 6u,xfux9stf7v;t0j v* bxeries 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 combination of 4.egk5q4 n* uc4b0 $\Omega$, 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 parae.r0 h aoctp.4llel combination 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 combinatx7r qir7b-okf o4. 3f zxff*s/ion of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V cijfgu 0 6w5hl4pzw2xm8rcuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all wer lhx428 0mj 6pwg5zfwue 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 number of 100-W light bulbs you can connect inf7 bi mjto hyj.6,:d(fb+ :yan parallel in a 120-V circuit withoufo:y.jim(ta bf7,y+6:d njhb t 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 2.0hp ,bs+q s.1 32achcl je43pkt $\Omega$ 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 30 n 5 pe0ex:.zjc$\Omega$ 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,r/zb36fdilba,3qe ,e pbcc 1* 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 2hus-ew/( n/ ;bzd 9/nhotx .qmr v2yt9.0 $\Omega$ 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 9.0 t, b:4brdhfk1$\Omega$ 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 9.0 *baev)a;r 6no$\Omega$ 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 ofj)lxq,b4vr 4b pz4 si/ 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 n ge72f w ;*g*cmzv/tj$R_2$, 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 Fig. 199 9,og ,(o;r dtvdtada/ky:ow-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, de35*jd3ar4; f7 smbeolo n/qku 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. 19-4, deteru1)b1n s0)m dl4rnv,nh b*qxgmine 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. trgp4utj1q8w*; n gz3 19-4, determine 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 relative to poin sdxh6 h4lc:8at 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 os .bvnx- rju62f 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 relatg 5/8kqx) qfjj i)clt*ive 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 whd*7za76tosqia ,5+0cv; p spczr + uFig. 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 /7nagk: o;lr-vka; .rrcet ip43d h c.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 nb4ep/.4gg2wcbr.(qmwz . ththe 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 tf8iq *f(wsx0 oh0:yqvhe 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 alavb -5k d/3zyoi39,3s (qik.sh nqothe 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 the s -ulr mz32no6i x9/xz12 $\Omega$ 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 /:y 8jy)ae0 drynh x9nthe 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 connect h-d3nab.(lio/4vmn d ing the upper left and lower left co h/mvb-3.a(l nndio 4drners?

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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 capacitance of thf5hf 8z kk/l8ois combinf5h8fzkol8k/ ation 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 connectedji/awsb6il/*xu;pz- hfs2z * in series across a 12.0-V i/s6;zf -w2z*a/p bius*jlh xbattery. How much charge 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 are connected in series across a 12. p-dphe(:.3 vrnpew,+ 7kuig 5la:fvq0-V battery. What is the potential difference acro q.vpg f,wnvpakrl:i+ :hu3(7p5- deess 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 ,jpp)wmtd 0ei9wuu0 v/k/s a1 series across a 3.0-V battery. What is the voltagu0)v1 9dkwt, iu/wpj/e p 0smae across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3pf11/y,9n,sq xyspg n.0-V battery. What is the voltage across the 2.0-mF capacito1fnn/yp91,sq ,y s gpxr?

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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 af cdksh+3*s/l a. qoo2cross a 24-V battery. How much energy is stor 3/s+qsdoa *flko c.2hed 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*zxd+zt mtf,sc v/s1mutnkp /g(4 )6p are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of thitpz)6pktc(ssmu+,f v/ z g 1/md4xtn* s 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 czva s71oto,p)k r7s-rn q4q: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 capacitano4o pk:t-7)7rva1, q zq crssnce?

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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. f7 z;ik -4nzcl The combination is then connected in series wit-k znc7 ;4fzilh 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 parallel. Thkix( qm 5f7,ife combination is then connected in series wiixfqf, (5km 7ith 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 charged throtzcuyazk irh3+x6zh+64y .- iugh 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 div3*6jv ucz sszn r/86oscharged 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 capack:4ca1pcsu 0*se wccl3ls0.q rj0 ;qv itor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between tcq0ja qp;lus0c4v*rc : k cw.0l ss1e3 = $RC$ 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 chareq 7nvvg - vq:q7v(om)ged to 6.0-V. It is then connected in series with a 3.vq(7ev vnm7qv :g- qo)0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistdh -suqza; f;ykya: -2ance 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 ase3s)hk y-iu5 resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance -5:ltn q z,zcblb e,7gof 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 g0 z-bx i2vshl6hk 2e(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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