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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 term o1ix,w 0cpfmtzh:o5d- 8nm ;pinals of a battery, when no current flows to a:i,p-m 8ct xzh;on0 o mdw1fp5n 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 between the terminals of a battery, when current fljl4fa w7btf; kc76-kmows to an external b kc af64fltmj 7kw;7-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 in series to a battert.(;z j/qbii o+jbqf7 y

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are conj84ryiy/g eogo95 r lk:n 05b cj6zfb.nected 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 ki j)d 8dn+kmu5 -hb/nof 12 A flows from the battery, how much current flows through any onei kdjhd- nn8k/b 5mu+) 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 seriellve)21a7.xkzj2 qhsmv6 /ay s to a 12-V battery. What is the volta2yljq 2./hm ek1a)sx6v z v7lage 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 t2y/imq1wvsqk8ro 0u 3iim)vh+k x8(x o a constant voltage source, the power supplied by the sourivi)w ( mksqm hy/881iu0k 3xqro2v+xce

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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 res b igsh sp 3/yl3kgk*+/tz:nj.istors 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 co4(da vf75yxrv+e g; rhnnected 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 resistors are connected in parallel to a 12-V battery.8 7i rs-bioxt. What is the voltage of any 7t8so ii.-rbx 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 the cur 87ajkk72ox rcrent of 12 A flows fromx 78 ojarc2k7k 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 connfz gdnze*wx -zmb(i6q 7sy 69o5c8ao8tq 4*i rected in parallel. What happens if one l-4 6 *qoei7 gdcr y9ow5qx* af88nsbi(zmt6zzamp burns out? (Assume negligible 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 voltagem t.71og0*5grb cygg x source, the power suppliedtg.bgrgc701 g myx *o5 by the 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 resistors, each of resista*zlo zm -jov ;r kc 05zgqg5i03ehm-s+nce R. The maximum power each can dissipatm0s;zhj- qg0ilm53- z*vrc+ekzo og 5 e 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 junc+-nxk9hkxvn0tb)g5 3aj7 r+v 2muaertion 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 t44 n+l b ucaco(,4:zcrohx/o 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 f4 eoak hpz) xgc/ rq,xo/ 8(wa23og*ris 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 ynp8k;vbrl0 3 rule 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 cinj tini 3t,//3ohlf o*rcuit 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 idto uihadcg,xg-(-4txf7 a40x 1sxsj *entical storage batteries together in series ("+" to "-" to "+" 7x(xaj 4 i od-,tsf axgsgx4*ht0cu 1-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 ("+" p.qzu un,uvj)* z st7*to "-" to "-" to "+"), and place uz* nqp tvj7.s ,*u)zuthem 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 batterie 5bl,/ z xmdac/:ydsb+s together in parallel, and place them in a cir5lb:b d, dc/sy amxz/+cuit, 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 iw 8/1czu xcaap9x1 y8kn 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 capah4ryr/ i/fp 9ecitors are connected in series, the equivalent capacitance of the comirp9h4 eyf //rbination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to a battery. ;62dx0.05 rhfts-z lf df snetvdd 8.a If a total charge of Q flows from the blfeth .5 ;fdvdd r60ftn0zas.d s -8x2attery, 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 are connected in paral*r xb;0l7scr klel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected in parallel,fs 9h7e q;n 8;tferle) the equivalent capacitance 9t)esfqhe l87 nf;er; of the combination 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 to a battery. Ifiy6l dmz ))i6/ (ee4bili.4t zfeh*e u a total charge of Q flows from the battery, how much charge does each capacitorle he.zzi)em )de 46iibl*uf4y6t ( /i 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 quantity RC?hbwx: u c0t9y ,zaf;3b

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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*m 6kvyq 2s); z n8lnp+i*irig an ideal battery of constant terminal voltage. At the moment contact is made with the battery, t;s nvr*lpq)m 6+ki2iziny*g8 he 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 capac*7.vozc x ff2yitor are connected in series to an ideal battery of constant terminal voltage. At*v2zc.fox7 y f the moment 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 connected in series to an ideal c2,q uc.uq 0 hzepzb3/battery of constant terminal voltage. When this system reaches its steady-state, the voltage across tpc3.uhzceu0bq zq/2 ,he 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 shou.mz 8ss43ytfild

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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:):t wmgvmwhuw+)m uq*0ve d 8 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 prxhkit8jtck,4 + h+w k,operly placing an ammeter in a circuit consisting of one resistor and one battery. As a resultw+chkti4k8+ h jxt,,k,

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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 ajesdu3-t,igj: l69 qgn ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltmeter from a galvanometer, one normas-1: 17t ghrlzy nwv)r+p d-0zldac-nlly 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 volk-.u 2 *ugdpeftmeter'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 a resisthf9ys4a .og 8yz(ct) oor. What happens to the total current flowing in the circuit as a retoo)cyf z h8as g49y(.sult 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 ammeter, and a voltmeter is placty r; axd;dbl)//d(r pxo t0*ced in parallel across both the resistor and the ammeter. This network is then placed across a battery. If onrd 0(oc xpd;)axytltr// d*b;e 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 pla+g2baf s(z1z mced in parallel across the resistor only21 fzs(g abm+z. 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 12, 3 wg+ e3b sz wxxl6;f:05 *e4gafddxcn/ux tw7).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 6z eeyl 3ky(*(:h;ao05x(f i5n w jhoyp.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,xt w- e0h n)vcp2-xry5bk3.qm 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 seripi j:og6 -4qvces combination 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 combinatt )*g 3:dxm m xv54tc1zqtw.crion 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 raki//t.1x ;)bm jl3 2 kytxbyinto a parallel 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 parallelqp e:4zgw: + zjoyrs+n7d+: dd 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 o o95 oat3uj jk2lqn1o y4qa+2zf 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-/go8 /bawyot 1ro8wfc- z :b jw)(3gkp1nfd5iV circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total1 i5bn c/3w1drg8otk yapf8o-gow z)bfw /:j( 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 numbepow6 +fd9nk7lr of 100-W light bulbs you can connect in parallel in a 120-V circuit wlwn9k +6 pd7foithout 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 .s rpgz58dkm(pllk 2- $\Omega$ 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 1bagw/d7vyd-v 3x b,/fw cdg2j4vaj (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, 6.0, aw fnh:03j7-clwvc d1end 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 9z,rj4j:pqz* w4z a g(q.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 * v-njamx1hbx7uv , 4y$\Omega$ 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 andk auq)3kg9tz/2rc)(r(cv v7c6j vb cp 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 circu+)c sio5hvr i7elh9p8jw kx 1.k gdrdp(kr4;9it 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*luldkn: 6lvjuzjh sm, 9car3ws59 4w*2x *s $R_2$, 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 lkje /x+m8q*kcircuit 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. b7 l *y8ihbr2f19-4, 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. mlai z 4d641 sgs*9a,gzc2f sp19-4, 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 curr:w kcna9ix2l+mh n9d;ent 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 ofgll8ejb c88p; 8emughuml,b1(;; k n v point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C in Fig. 19-554ljm6ku s7gd ?


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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 inib9 82 )u ;ut9bk/pjp i,xp1xgwkqez5 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 batterysu:0 pe8x/h 7)jqg7 9luybvm timwk- 9 in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop ga;y0 izwr yc72z0f295 chnigfrom 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 the 7l g-/cs5kt* j8rxpa8t $\Omega$ 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 im ;i u24 d*kjm) vch3h3dbp4ean 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 ionpmehkj* 6pm w 57;dg9 0rf3$\Omega$ 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 1)r*x umxs8qn *2 $\Omega$ 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 in21(ex+h ifq+x7yd q qkqhx3 (x 1vqep. 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 kj-kmq 9xe08b solid wire connecting the upper left and lower left corne8q k0kemj9x-b rs?

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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. ,pz,/ a0r ura *6dvika The equivalent capacitance of this cod0a/pz,i 6ua kar r,*vmbination 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 mh s6.7bp:bub+rm 4b fgF capacitors are connected in series across a 12.0-V battery. How much charge is bh+6 :mgs7 bpr bufb4.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 ca tum ..1nw2v zf9ed,f*ip2kczpacitors are connected in series across a 12.0-V battery. What is the potential d f.vdz 2n.ift9ep wc1k2u*zm ,ifference across 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 series across av:4 gcbfv,l6e 3.0-V battery. What is the voltage across the 1.0-mF capacitorf6vb4 g:lc ev,?

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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 m 0yk/5kt, 3- jrrckw a5h sw8kt7sp0aa 3.0-V battery. What is the vkks7 3y5kr5t/rpak mt0 cs0,j-awwh8 oltage across 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 parap qmumdam.j5 v,0my9c;d s- 0ollel across a 24-V battery. How much enoam9jc 0d.5 sqpm;m,-ydumv0 ergy 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 parbmpmj4s) x:b.fyo 1* yallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of thi*y bpb ofx sm.)4ym:1js 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. The combination:n lqx 1zxlnpz1*nlt(6. knot++d1sc is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is theckn:s 1nt z*d+ lzn6l.qp l+1n( x1otx 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 ..wot,0bjp,n gz ri/ymF and 8.00 mF are connected in parallel. The combination is twiy z/. 0opg, jnbt.r,hen connected in series with 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 ai25r7su dr7w l.61w5waxoiq knd 8.00 mF are connected in parallel. The combinatiowa5r 7xwro6.ld25u7q1w si ki n is then 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 charged through a 50 )c,sft g 7mwhva 7kl/de3zr g(:;i0hm$k\Omega$ 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 thro6; df2 r:fjt rgex2 a,520+nfybbn bdough 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 connepyis, f2fnj8,a:nh kz xy5e/ag6 2 i0wcted in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltag65aki/yn,:2e fai8 w0sx jghfy2 pzn,e 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 i crjp0w 2ju0i* op(z.us then connected in series with a 3.( u* p0jpc jouw2iz.r00 $M\Omega$ 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 resistanc nn5m y1u 2k5 +8lsdq,ucjmcw3e 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 resistancvs g*p19ewn+mqym(4je 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 resist *o;k,wu+m lztance 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 7an56opzlb u -e7bo ,oresistance 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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