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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 ter1hsa)tedv x/ ;s 1gjfq0*; ufrminals of a battery, when no current flows to an jffrh;geqt1 a0u1s)x;*s d/vexternal 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 between the terminals of a b)xi4kj i)9o zsnn lh;47 /qwuzattery, when current flows to an external ci l4)47/oisz9qnun) jikhw zx;rcuit, 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 cojb;kpbe xx0a.hhw, j 19r)mv9nnected 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 connaq4c a(6e+w 9qw golwpa(/rc( ected 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 connecte zg-sob5oc6qm3: cg ;zx 8lgn3d in series to a battery. If the current of 12 A flows from the battery, how much currn8 ;5m3z- goxszloc:g 3qg6 cbent flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connecte .wuyxpf +*n0xd in series to a 12-V battery. What is the voltage across any ox.0 *nyx pufw+ne of the resistors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, the wzh-lhb7+njfx pp5l ; /j7/orpower suppliedwl-;pjxn+poh 7 zb/jfl/5h7r by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are co1wn*l :go. /l sl5zwtmnnected 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 connece-xiyitxo,;r6 ; glv-fqx ddy6n:-:dted 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 resisto iitu+a1 )j lf1qs k29p+c1,q;ihp gtbrs are connected in parallel to a 12-V battery. What is the voltage of au qakjttp12lh+9,fpi+b i1q1i;s) g cny 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 tar3iv:.k:xay*sx 6i rhe current of 12 A flows from the battery, how much current flows through any one av3y6xk *: irras:i.xof 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 trzl)b*kc 1).mv*fxbmh ee lights are connected in parallel. What happens if one lamp burns out? (Assume negligib) m.h* *mczvbk)lbf1xle 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 con3g,z ki z7wx5istant voltage source, the power supplied by the s3 k7giixz5, wzource

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resisrr 8 fx1jf,x*ytors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in sex8xfr f *j1r,yries, 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 junction ruleozv9 ; +e1((bubtcjkf.
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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 rule.;44wrkwn1dff9 a r 9mv1td2v v
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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.ntjdb1e0fiyd 1 -f 5b 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 a4nn oidt y7 mfyh93rb31ozgjwcs 3*f+ m.:5sexample 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 hpy azsq.71kpu1tbri*35hu k6ere is valid for the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries toge-+ 3zcq- *2jsvmqi/7:tphi s)c fjia zther in series ("+" to "-" to "+" to "-"), and place theahsc*ji: jqf / mi z-) z-2qv37pisct+m 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 batteries together in se 8//1for3ilxxa89o ll-bbp wu,m45 rr f-gfssries ("+" to "-" to "-" to "+"), and place them in a circuit, the combinationpmrgl8f- s,r3lib/x1 l8o9fx 4 fo/5w-b asru 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, and3m5r9 b4yij6ppw x 8tc place them in a circuit, the combination will pr5x3bt mwjyr ip4c6p9 8ovide

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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 in series t j7;q- nhex7eio 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 connectx1dfvo h-au2 ;ed in series, the equivalent capacitance of the combination in a-fdo2hxv;u 1creases.

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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 s jh2 z dp(g)r;8gfo;eferies to a battery. If a total charge of Q flows from the battery, how much chargeg; ;fpezj 8gfdhro(2) 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 connected in parallel to a battb39o zs3j9tj*inrr3n69lrijery,

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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 capacitan).nyvhwu.k e 9ce of the combination increas ev) 9h.k.ynwues.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors fenhi9-k ga2: 7tru /nux0;qnare connected in parallel to a battery. If a total charge of Q flows from the battery, how much2xkni uu-; anrft 9nqe07 /h:g 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 quantityp w(v(n-+w 5oh vfpw4ocncgv9 ,jgq0/ 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 o,m gdrdb;zmlv 7n7;yg5; 6jwan ideal battery of constant 7 jly ; rzdg;7g;5wmd,bo vn6mterminal voltage. 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 a v5 - /ysq4 y6ithvh.o;jdeyh/re connected in series to an ideal battery of constant terminal voltage. At the momei h -yvyqst h/5e;vhoj .6y4d/nt 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 connectemq uo:q9s ))mwd in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the res9mso)qmq:) uwistor 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 shoul + yx0.k jrar 5x*ye z1od(x:q+ip6gtod

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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 thc8qly8 2uf oc8 6wjlu4e 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 :( ng9o+ duo(vis f/f8 *nz8bqdo2ulfcircuit consisting of g 8ffbu+slz*nv/ ofodd(io q(8u2 9n:one resistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of an ammeter's shunt 4 em)t:7aq +opuxg+ ioresistance

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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 normalz1 j:ho:50jtj fq+wcpiol5s,;m rji0ly 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 serip uzpb.;.vu d4es 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 plac t:wt9l(uldgoingh79u4 pr)5ing a voltmeter across a resistor. What happens to the total current flowing in the co )7t d gui54uwt(l9:p hngl9rircuit as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is :j*n+ gti bz;lgv,vl:1v2rc dwired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a batterrd*z+v: 1vigvb :l;,tjl n 2cgy. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmeter is placetjjaf3 n.7xe ,d 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 reading, the value of7t3, .exa njjbtained

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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 g0z)u4lwul hx yz,l8; 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, 1j;p+)6 1lwpsa lbed4 x2, and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6.0fd3v36crgawy:rb2 0(f :uv3nyygcv , $\Omega$ 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 d qm) v+g8n4+v. q-utdmuz, nucombination 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 cls;(n co,(lbgi4suf 8 l 4rz2iombination 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 a 71cdhaxi19carallel 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 a9ln9vhsc y2p of dt/99 parallel 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 6dvh*g-l yici y-lto2hz18 z9g ,an4 qinto 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 a i5lso (ahu;s5ppliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were opealsoihus(5; 5rated 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-*stw z - c-)*g6kf;ee upiygr of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A ciw *pi) ;t g-cf*skzyr ee6ug--rcuit 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 gck:2r5n 2qm -k/+ae s4-pspq+ fd xab$\Omega$ 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 3gd*tt3a ;btv+x2 lnk*0 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and -4a48dz xmoed10.0 $\Omega$ 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 jd*cs h:hk x. 6d)zuy+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 a xdn l2/vp5t;und 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 5.0mpcwt m,h:dl: hlc+3;i cc3(m and 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 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 ,w ifhzbh;zha q h wa199()cb9the 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 u0+i kzi59hukg9y +nhgh $R_2$, 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 cibuuy8pwoz1*./ox g; av*e(ay rcuit 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. 19-4, determine the current in the 1f5 cme5pdt k;6yq0+ms $\Omega$ 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 Fi sd+l(w, dp*xuh2s -kfg. 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, determine the current in, pdiundin 2xpm9em /nxo0* ;9 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 point C in Fig. 19-; t-pq1y9nqwj18l mx :cw8rdaye5so y v;)qk15?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig. 19-5mfcio63 l 7zk.f99g )assuuw,?


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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 to point C in Fig. 1.b*.)ff z3mi0jx+jsyk lhf e(9-5?


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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 inju94:uerx im 4 Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point Bw2f d uek9.(e7zhy,ap,5qvs g 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 thek8 7yiwtuj8p2 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 currentqfhuzd)z /k 98wu)h;lq, uf*n in 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 th3j s:awh qsxajrkq,7ci* - *)de 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 xt+:t1cnu ed,dhz)m,6akks7 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in zid:q2 l;+wb-drru: 9 ki*i9f.gy.m1vi tarn the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire cor2gswbw 8 29ay(lg:2ennqf-gnnecting the upper left and lower left corners-eng2ar gqys2bgn 9w 28(wl:f?

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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 capa5)-ptg sa4 nw79pb6 waxza3dh citance of this combination isbg3pa7s 9hp 4 5-da6 nz)watxw

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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 53j 0 +/sdjn5vcs2 jtyr0rfwh:9 )mjlh0.0 mF capacitors are connected in series across a 12.0-V battery. Ho l5t0y)jd2hfcm+03wr9jr/ss: jvhjnw 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 .v1 x.t58l)cz6n)yjt+ pf ls npce8tsconnected in series across a 12.0-V battery. What is the potential difference acrojp vl ct) etf1l)zs5yt.c8 .xp6sn+ n8ss 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 connec+vu vu2n t48im;dblb4y.e1 fj ted in series across a 3.0-V battery. What is the volttvui;8blv.d4b2n+yumj14ef 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 capacitor are connected in series udaqii*sa1j h7+.q m .;8hhfkacross a 3.0-V battery. What is the voltage across the 2.0-mF ca+ 7.u;.sad8hqfk h *a1mijhq ipacitor?

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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 connema)q j-r /faxi6.ql dq,u+dn 8cted in parallel across a 24-V battery. How much energy is s+6, qlxmdr.n/8a qqd)uia f j-tored 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 conn1c5sb1 zuf ;4fuxl, ukh36nxzected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of tz5 ,f z; ucxh1b641xkluu fn3shis arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. e*2vf 3 m6 b9najo3pywThe combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivaweay6jn2pvmf3b93 * olent 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 ri *f:3vbw c(1rbe x)u( z-avm8cba,r and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0mr bur8xi,a( 3: b1-)r(*vccfwb aev z-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 para w tb2+:dqow86rje:r c + dm7xz6im2xollel. The combination is thenmxioq+c282d7m: d ow+rbxe jtz6:rw6 connected 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*l/; d)nlddru 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 db+(yz /(j3w tz; *slg; sva/4xxgqdgaischarged 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 vev ,rg*vvny,y5bw*ksz+;5 a) sfv9b a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is chargedvn5 )ygw* ey ;9,vv ,+svr*bsz5 kbvfa 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-*ba;uwi:v3x mV. It is then connected in series with a 3.i:vm 3w a*;bux0 $M\Omega$ 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 inter-n0l*igkt7w b nal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resi*zk 4)nysd7o estance 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 resistaatz4ij;p2ku k. ;x r)qnce 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 resy;u(1l1ni dq;nduj*mdmx( 7t istance 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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    总分:102分 及格:61.2分 时间:不限时
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