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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 terminals5 t7wr7xnvysq ry2 .h2:s7oje of a battery, when no current flows to an external circuit, is referred to ahyexw72.jr5 ysrto s2 q7v 7:ns 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, when currenxu 9rfv mpqb6m ;v1 li7ax+,x7t flows toa7 l;+6x19,xqbpv mmruifx 7 v an external circuit, 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 is ysp2m8fo 1o+d0 +basn 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 connectedma)l)o0 rbm9 ws,nv0 k 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 cui, jdl*p*lf 86 2mfmrarrent of 12 A flows from the battery, how 2mm lrf, *jplif*da6 8much 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 resistors are connected in )jc)yn1o k0 0vtai3clqat.i0 series to a 12-V battery. What is the voltage across any one of the resisttk1lac 0.a)i c0io3q )0njt yvors?

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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 constag nso1 lcuf,pg* 2-g8ja*i+v lnt voltage source, the power supplied a2iv+l-ucglf8 n o*jsg*p,1g 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 connected in parallel to a batter, 8-fjda yx ;kawl4lv+y,

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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 pad*wzfu2urt2 dzm: 7 9 ,dvkjz6rallel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to akvkpz3d:+az7 qj6e 4l 2 q02kha+oyk g 12-V battery. What is g oyv +j 4:06l 2qa3akkq2+d7k khzpezthe 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 in parallel to zjmebx(u,y lcgr9jb -kf pbm h7:7):: a battery. If the current okm (,p crhub:x-gj7: b9zybmej:f7)lf 12 A flows from the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connect5:nox , 5dp8xc dz,(q7yy.gchsryes9 ed in parallel. What happens if one lamp burns out? (Assume negligible rdhs 5ycnp oy7zyq9exs 5g:x8drc(.,,esistance 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 20ca;2sg jy scyfpw( g mk+q+6added in parallel to a constant voltage source, the power supplied by ty0kjw cpg ;qg+cyf6a( 2s s2+mhe source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resi*t,hbbts 7az g5f*gp,:6 w c qwuy;.khstors, 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 with these two.5z :y*7sw* ta, ;qg wuc t.hhbgp6bk,f 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 r5 kp( 60yyu/ yw5vls2edmbdp5 ule.
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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 xe2i0lx) mb m97ixhb/ rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an exampl 8oex; o;* ff1syqr/tfe 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 rulecj83ijmv.t kt+ g-y b1 is 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 valid for the circuit z*u9w5i,(n tsq.yrh sshown?


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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 identic2mx0r;l mkry h2j+16 ekwa8xl al storage batteries together in series ("+" to "-" tomlxxemhar ; +w1 60jly8 2rkk2 "+" to "-"), and place them 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 series ("+" to " n82d qo+;peop-" to "-" to "+"), and place them in a circuit, pon8 qo d2;ep+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 stohy12 p;0)y xnzcja(w l6iezn /ia-v-z rage batteries together in parallel, and place them in a circuit, theyphz;ne n-jz )x(cz-ial /wv61i2 a0y 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 in series to ;s wm7kuu--jhy . qv-sa 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 el;tcgt y(.oci20 3 ,txj.kzaseries, the equivalent capacitance of the combination incre2 t xy zgj;c3c ktl,0a(o..iteases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to a battery. If a total ch+z5 i xnd.dly 47r-uwow-nbw- arge of Q flows from wz-+dod5.uwyli4 x-n7-bnr w the battery, how much charge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors arsbb g:he)4cwz2s;nft8n )(-p jov) b me 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 conn1tpohpcgiy q;0 l xr97 +/bn-woy/v(cected in parallel, the equivalent capacitance of the combination-noi+y ylcpchoqv/ b7prx ;0 (wtg91/ increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitbd 0axxf:eqz )g,;du(c/. :ucfgam-pors are connected in parallel to a battery. If a total charf gf-)x.emb/d, :xqg0cac :u (dzup a;ge of Q flows from the 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 qiw pkex*.rkmi5z f-tes( 5e7 1uantity 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 d+r;a/a6s zb3 *r, t(fvkddoc an ideal battery of constant terminal voltage. At the moment contact is made with rd+z(r kvdc*a/6afd , b3s; tothe battery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal ba/b0qbc8vvv j8smo+.ls p+q0n ttery of constant terminal voltage. At the moment contact is made with the battery, the voltage across tv 8/m q0 pocb lvs0n8s.qvj+b+he 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 connectedlk 1hbb 1r wi1sib)*zctf-* 8r in series to an ideal battery of constant terminal vl1)i *r1b rz1wi fbkb t8hc-*soltage. 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 shoug+( +(l(p vz)c) lw w.ovosvemld

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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 by8mgo4( 8z ybnu bahla5w8e 0+j 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 f3zr-d 00mv*yhbt, hs circuit consisting of one resisd tvr0zysbh, -mh*03 ftor 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 shunxcg9:0rbe.pjxp7q zabbi 5(/t 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 voltmkm5i21vvx bu /eter 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 resistaxgu dxdgjrmznb,4)*d,( -8bt nce of a voltmeter'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 acr g h*tb 0ie7/oxeeeb(7oss a resistor. What happene geeh0 (x7/bbo7*teis to the total current flowing in the circuit 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 wired in series with an ammeeihke3s t (2w7 ca fwusz8,ok t,1*m(ater, and a voltmeter is place c 7, ua*eifwkaw8k(st,em1z(2 s3ohtd 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 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 ammeterq4n37axgu 5ym: bkj+gow7d1n, and a voltmeter is placed in parallel acrosq b1: gakdxwo475m n7 +g3ynjus 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 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 121xv(x7m1 djdg r/ lt .oj:6hme, 3.0, 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, +fl afscj utch64pv ,0(qj86t 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.a)we qu6b8hy,w4u1rg0 $\Omega$ 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 comb6n 6qaq21z;fhb 7immfination 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 i5hmyg 9w9 gz1a 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 pa0+ct xl2(qh+-y./j)fp iffxv gvcp :d rallel 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 parb2.ye es6rc-iltmz i pl8+2h z47n6kl allel 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 combination ofx :tbllx**ltxu. (q2qdz0ntys lt(9gfc 3 : )w 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 apa tste4fis; m6ux(f h9k :k/3qpliances 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 current would they dr6(:fsam 9uxtfqihst/ kk3;e 4aw?

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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 con (ijq a(90 ,vhwqvte4:n xo/zwnect in parallel in a 120-V circuit without trippin/owt :ax9jq(ez0 4 hw(,ivvnqg 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 b o(q n 0o4 e40bcffeo(-puf6d$\Omega$ 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+z;eoqlvsxn2e 3g/ ffd--0xy $\Omega$ 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, an/ 3f/d kyprc4rd 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 5.0frgf;+n9k* k z3s1vlx 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 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 n0un e0qxdz+m zpw :0cn3d-)v$\Omega$ 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 an)ve izm13o/m bd 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 the zdofr;n+8gl 4circuit 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 throug3x-ynq0 k(5bjinv l5gh $R_2$, 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 resisqdyk5ic1r .-itance of the 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. 19-4, determine the current in ths+3iil h-+j.pueod 3v e 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 tlyfaf* gy.- )phe 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 currentwt1t , 7;av c6qh xvjkczn/j(8 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 point C in Fig. 19-5? j/7ay8o 5/2eznizwct


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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 Fiemv,e8,, ypxb g. 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 reln0ywij13mt0fvg rm: gy b:53v a5wd*native to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from the battery in Fig. 19b)woowke+q )psp : b. 9r1j(km-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 drop1plc1)lpq0xvd- cq 9f from point 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 in dp2:q 40loss8tt.n q(u k3eeu 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-g ab39(aomq7xcau6 x 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 the 4 s/ c*/1jolmbfsdox0 c2 5wt5y $\Omega$ 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 th6 2eqdif,g lw2e 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 the 1 0m hk.: hfyz25jye5cn8 $\Omega$ 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 connecting the upper lelkp2xtnno.i gqbw n1uf7ey;1/,t )6qft and lower left cornq762/ ,nyel.)ukqntxf 1pn1;obi tg wers?

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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 serr/* 6 vpt4fh68jpgsg z3ci+ygies. The equivalent capacitance of this combingv8jtc6gp3+p gs/6hrizyf * 4ation 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 connectx*(vr*p .se yeed in series across a 12.0-V battery. Howvs *e.per*y(x 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 a mptcfogp zuk8ws .yzm0is74;1 ef320 cross a 12.0-V battery. What is the potential difference across the 10.0-mF c y 0z2putg8 cfz1o;pesiw30smf k47m.apacitor?

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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 connectedbmzmwoj7a71p6, af) k in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacitorbajm 6o 17w7azkpf,m)?

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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 conneo7( 0w2jc o x/sodtc8zcted in series across a 3.0-V battery. What is the voltage across the 2.0-mF o8oj(w0xtzc 72sc/docapacitor?

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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 am ct 2gtvpb ;c.q8rt,1o 0o:izcross a 24-V battery. How much energy is stored in this combination when the capacitors are,c8r.zotobci t1qvtp 0g:m;2 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 :w-x8)fyw7zdknbp.p z03tk f are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangez-bp kpfd7w38k: 0wnyx )fzt. ment?

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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 parallelibt/:j8a(ly6 t)j v cb. The combination isya8l)v :tj/(cij t 6bb then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in paralled;tvo;3;qgo,xb cwk * 1i kqoq24jgm /l. The combination is then connected in series with a 12.0-V battery and a 14.04g cm,bq ijd q32k ox1;*ok/; vogqt;w-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 conn7rx y*ey j6jw mw1au1-s,zla/ected in parallel. The combination is then connected alwzw,7er6j/xy ayj1s- 1*umin 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 charged through a 5 +7koars,gz.9;y xg5c he kt9uwkv+7z0 $k\Omega$ 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 charge e:) th1a;awx9pmx-ksd to 12 V and then 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 capacith8b ts3fxrx; *6o +il)k gwxhi/qg(3ior is initial6b3loki ;xw q(hs8*hi rxxi+g3g )f/tly 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 thpv iy-nvo5oj2; e3)kq en connected in series with a 3nykvo)qi3ep5jo v2- ; .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 int8b,1izy cb i+uernal 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 resistance of i 3o208z2vwu b fn9uij24.0 $\Omega$. 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 resihfq9i*; bi15bpprj7 xstance 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 resi e)oekr*k .)oi+6yl qsstance 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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