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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 terminals of a battery, y+ z63 l+d0mn+iflvg ywhen no current flows to an external circuit, i+d63lzi0f n ++y lgmyvs 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 differ8 j:f7a9x lenxy zd5g/ence between the terminals of a battery, when current flows to an external circuit, is refer7 :n/eyal xfx9gd5 8zjred 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 bc1+ kej 3gdpcbr8 p5:edl7i 7jattery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connecw/gipc ;pp1 0ckz 2hl 8nt8/acted 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 thc (own+ mr26s6wx pthok /b5e,e current of 12 A flows from the battery, how much current flows through( /o6x+ 52btp6 smcwork nw,eh 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 ,;0 rz g4hoo*dc8 aly-v0vtdd71rtqeare connected in series to a 12-V battery. What is th e-v 1lygazt d;oc7hot0, 8v0r*dr4dqe voltage 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 imlspbnpe)z49tkr /4b:t nv:g5 kgol+ p:-s5to a constant voltage source, the power suszngo pinb+::4l/l:9p t)mgr b-sp5t4e 5vkkpplied 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 7ey5 qvp5saa(zngkgx4g)uawf (+v c *ee9 0 5fconnected in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel,quh j bi +92pdsjx(q// 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 vih+ha rvm)d;o58mutkle(1, connected in parallel to a 12-V battery. What is the voltage of any one voml )htk+r(vuihe 15 m; 8,daof 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 curre ze(8nmz: o 68t;agvktnt omz8 ;8nzo g(6kaevt:tf 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 lig;g5jl o- b*4wgd wyrf2hts are connected in parallel. What happens if one lamp burns out? (Assume negligible resist5l wgy*gw o2d bfj4;-rance 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 para6ziotql4 xc-n(. be,lllel to a constant voltage source, the power su4ozlq,b(lei-6. xntc pplied 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 resistak3sm-vax fk6qf/w3 crt5*bq;nce R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected ims3*f btavqw6x;q/r-3f c 5 kkn 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 ru9)x :bg :e fcql1sr2w+yyuj 8om z8(aple.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loos5-za5ar(h0r *gpd)yj( gqn op 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 * kja( c5lg3f.7i3i aspi0 *ghjoqa7eis 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 a a7x:qoep(8+i) g tjbln 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 s wua cr(ysw54b s ydc063z(4phhown?


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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 identi-loi b,.gdc g xk o/zpkk;/c5 dz.vv12cal storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a cio5bx2d v/v z.kp cz.kkco, lggi/d;- 1rcuit, 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 ("+" t1,e9pjui ;:9gf ohnjw o "-" to "-" to "+"), and place them in a ho nf:;9,w1eijupj9gcircuit, 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 iden 4moph e-8;chttical storage batteries together in parallel, and place them in a po;4e-hh t8 mccircuit, 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 arscigd5).dzro h ;nq17 socl 3*e connected in series to a battery,

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitors are connected mqy)y t g;fk ymok0ago-7o9rw)5x0d/in series, the equivalent capacitance of the combination incre/0yfk dtra-07og9wmogm) ko5;)x qyyases.

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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 serii yo 0*r,wptfu5y5v0 kes to a battery. If a total charge of Qr5yfp,0o y5 v0*tkwu i flows from 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 are connected in parallel1 )-zioepyqw-ej1 z tkuu) 48b 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, the equiv6zho,qo5ld q ox2d6bf v,ef52alent capacitance of the combination increasevqf6 ,df2od2xq55b z6o,hol e s.

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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 c x2zx0 x5wqvm,li8:rk onnected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitqxiwxl5zkx8m 0 , vr:2or 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 quantz7h5dx; 3mavjity 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 s7y :ifj8:ohb in series to an ideal battery of constant termin8:7bjo h:y sifal 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 are connected in series to an ideal pyq js t4 3idjh)y91p(os4ilgq dl(2* battery of constant terminal voltage. At the moment contact is made with thds( tsgiq( ip4hdjy1o)yljp2l3q 9 *4e 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 jqs-cf;2r to ce: :p*uan ideal battery of constant terminal voltage. When this system reaches its steady-r-qf s; 2ce:pjtuo*: cstate, 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 shou; iysivvrd*/;(b he4 cld

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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 tpoe;dt3;esq - fj 62wgo 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 circuit consio+s/cf ho8 y +evpw1l*sting of one resistor and one battery. As a resc+e fop+lw1*/ yvsh o8ult,

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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 rf j47jm6vs-hu:0vuv pesistance

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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 normally woulek;5lvnz7c+i 9 j,ndgd

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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 voltsx.; m hau 7;xm7stz9smeter'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 resistor. nom,h8 zl(63pt/ doloWhat happens to the total current flowing in the ld8(onto/z3, 6ohp m lcircuit 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 ammeter, and a voltmexcyfn*vns- 7 /ter is placed in parallel across both the resistor and the ammeter. This network is thenyvn c7/s-f *xn 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 seriesi zemg +;:hx-2 h7 hhzspjhgir:1q1r7 with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery.z-2j 7 ;:zi1 rhx:hi m1sgrhhgp7+heq 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, 3.0,bq5 r8 g/mx- hb,jmov)a4h3v h 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, a hi0l6a ggg p4eh76j1v7q 1llznd 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 dxemmkm ba2/ k d6*t s/kb7p2:6.0 $\Omega$ 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 of37f0fra/ahvur t* x,h:.nqm yzldcvs0 /h2.m 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 combination of a 3.0 q(dnys ;k8f *k$\Omega$ 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 combin ).2(mfl f)/f/adg/j sftzrfj ation of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination ou0rd cg*5gyu.f 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 combinat w(h8p:k2 ml 4 icga et4ndj)uq:77nrmion 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 a (4m 5bfr8cxrpeu4s-dh;egq59 cc wd6q 0re6circuit: 1200-W toaster, 650-W coffee pot, -ba xp8h0rg ;qm re6f96 wqeucd5d4re5s c (4cand 600-W microwave. If all were operated at the same time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbn lc5 ,utjteb0hwq*9,s you can connect in parallel in a 120-V circuibt0 wq9,j, h5 lentc*ut without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 az +un4a)3puv j-mc8d$\Omega$ 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 30zyu b a9p3f-2l)a* byfc9io4 q $\Omega$ 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 10.6glz -cl :xs2z0 $\Omega$ 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 andk 0j)c*oywln3 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 u:9i0aw yz*4rfe;b drj )6 iaw9.0 $\Omega$ 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 5.0 and 9.aw39 6 -rbt.xrw (ybwd,xlif. -ag6ng0 $\Omega$ 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 circuit in r n-agr .,ggp; r,r+tz4 fueu:6q nj)pad*,dv 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 p*822oqgn6 pmr 6aogc $R_2$, 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. 1ncuwgpayd;r;5eo )c /gu :b7/ 9-3?


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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 currentaq h.ksis 932mn -pbz; in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine 6xh.c/37rp, ex1q / 6a g6cpdbrti nbtthe 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. 19-4,4gkn 0uj:un -q 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 relacqej / :o/lo o8 u*c*tmsu6ft1tive 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 *p08xvxic7g-um a.e mg0: :9gcmiist 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 relatyv7e8y,7 vil2y 5jj ynive 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 battx *xgdx9. h5nq8v qw(7ogy k-fery 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 from po x 1z zg.f0f9rml15(jj ;ardyuint 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 -tv-aw,y k,os 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 in s itxy1qw9f88the 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 4mfc2ener6*/t di t48zd/i sb3 $\Omega$ 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 t-3lu*v 3h ) klu15btvvlex5fb he 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 thedq 5 t3od9d+ly wj c/kbjux2(8 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 connecting the84 ilog hu.c6pxw*oe2 upper left and lower left corne iec x.up 2ohg*lo68w4rs?

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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 seri:4p,k8u 9b 8dk fjwin5e kjjn9es. The equivalent capacitance of this combink8,kdn :ijkwnb9 u9 8pjfe 4j5ation is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across9xlicx( ipv / q;gzm/: a 12.0-V battery. How much charge is s/;iixzpqxl / : cmgv(9tored 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 con/u8fnpwhb1jt4,o p .h 4a2yxmnected in series across a 12.0-V battery. What is the potential diffe 4/oux84mw tj h.y,1pp n2bfharence 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 a 3.0-V b) xw8 zq lb/kqj1n7i:nattery. What is theilqn 8nq)7zx/k: j1bw voltage 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 3.0-V bat9.uq,ppcjw7+ +lgyc-fu:e0 s q5y lun tery. What is the voltage ac-c.pq+jynyw+uul5 cf79l,u s:eg p0q ross 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 parallel acros8mjf/ 0g c4anrs a 24-V battery. How much energy is stored in this cofcn0ja4rg8 /mmbination 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 pkka4v* 0icxs+in3, (va7f ei parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitaeski4 *xc,pikf3v +i(v a0an7nce of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 m;l: /yaob18vudb b rm-F and 8.00 mF are connected in parallel. The combination is th vd;/lr-byab :81bom uen 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 connectehw-1;,n 3hmn.b k cojgn6yt .ad in parallel. The combination is then connected in series with a 1h3, jgk wno-y;..n t1mbcnh6a2.0-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 8uu5.x jq.l 9ob.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF c5ql.u xbj.o u9apacitor. 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 f;xwnubut8 rs) +9 ;w u(tkb*u50 $k\Omega$ 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 c ,o4h;ajvafq)ovl- ; charged 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. Thefi1ilfm5*lz m,p- s .x capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What isim*zf1i5lx, lp.-fsm the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in bz /yfmp. )in8series with a 3..m)b8 f/ nyipz0 $M\Omega$ 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 resista:; knv twt 8, ynguj2br(:1nyrnce 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 24. s e80(*tzcxnv0 $\Omega$. 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 of 10e ywh:y4mn1tl2u; *cg2k bve20 $\Omega$ 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 resistan8vtw7u5 1zx9(1r/ d oowlrzgtd g1m4pce 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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