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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, wheiob ,960s5m)erb ahqjn no current flows to an external circuit, is referred to as thmsjbre,6oah 0 b i5)q9e

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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 +4jqs(4yf nksy)var3of a battery, when current flows to an external circuit, is referred to as theay)4ys 3kr s4vn+q(f j

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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 battq dh05cw11b7p eppk wxb. 4bqqe1-+reery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected ipw1e y9voa 5b5yfc1c )n series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistor/0ta ynfn- ,tws are connected in series to a battery. If the current of 12 A flows ft n/-tfa0yn, wrom the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. What is th --it+1 sxoptte voltage across any one of the +-1x ip-tso ttresistors?

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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 constj k0/qn-ps o2b v7-;l c0xygqzant voltage source, the power supplied by n0p-/s-jq7zk;y2q0 lbvc x gothe 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 cot;nky+h p0v +70dewujnnected 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 paral p/xi9f 1);9cq,ro. ggsa6afn1h waarlel, 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 connec fe-jvb1ouydg5: y, t+ u5l6umted in parallel to a 12-V battery. What is the voltage of any o:6yvl,d f+yub-5mut1ge5juone 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 + -cha kdv, ce2wip5m+are connected in parallel to a battery. If the current of 12 A fvdw5hkccme a+2 pi+,- lows 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 Chd woqsiz4iq4+cp hv/-k tc p+*f)i:k*ristmas tree lights are connected in parallel. What happens if k+ c+pop) qiiv*:q4h w/i4fk*z-ctds one lamp 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 pi 0npln9rc5 1voltage source, the power suppliedcl 5nppn91 ir0 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 resistance R. The m5d4mhi)1pr ifaximum power each ifmdh54r)ip 1 can dissipate 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 junctiox2j3qa*yie1; dy3pmp n 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 rulerl0 l)gt /vdenw4,j93ox p9gu.
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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 i4y uidk 2.cdi0h1om o/oepr8)s 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 example jrk:y:hmiaj r l/)i1 g6;lh-wof

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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 here0ptcw).0o rwt 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 829oy n+uialt(x/w gctogether in series ("+" to "-" to "+" to "-"), and place them in a circuit, the coci/ o+8 untg9(ya lw2xmbination 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 storckc ;:m.m cr g2bqjog-l1(x0tage batteries together in series ("+" to "-" to "-" to "-tc;1qmc lo.x2 m:( gbjk 0crg+"), and place them in a circuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage bs,(f 3 iimbfk-,f x41mf ywhhq )*pee*atteries together in parallel, and place th)b(4*3hfephi- q1ffwx*eymm s,fk, iem in a circuit, 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 in series to a battf u -kh2l:*edtery,

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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 capapxmh t84c.oelp:, eu-s/ 03jqgd /fkicitors are connected in series, the equivalent capacitance of the combination increases. :/,o4f- egu h8q3t/e0j.mlpsickpd x

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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 bat)p dnm9l(h 6 ;tcwpwa(;qak 2vtery. If a total charge of Q flows from;l(6 amp(;n)t2w9vqpwh akc d 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 c.6tgukq a2,k-14qqkjuqz ( jin 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 connected in parallel, the equivalent capacita ;konm;, pl1ot5wbt0hnce of the combinakwomp1h;bnt5 ol;,0t tion 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. Ifyoqw x.k5lxn7s9z/ e5 a total charge of Q flows from the battery, how97k.x xesw 55y/nqzlo 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 quantu+h ,vf)2mkf nj1m ,tbity 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 any8)8/mmic hjfs ,e kco,cy1m5 ideal battery of constant terminal voltage. At the moment cosf /m8 jkymc ,c),i81mh5ecoyntact 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 batte8vutub n/ 94xzry of constant terminal voltage. At the moment contact is made with the batteryx 8v nzubtu49/, 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 tub ;bwq69- eswdio83 battery of constant terminal voltage. When this system rwbq 6s eu3tw-9i8od;beaches 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 shouldu5ug:)7o :6d lx:oc k-bw+tl,afkvca

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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 to0y flm+xpu qj9a7 k. af9ch+e: 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 proz+il7nvry 1fv)sez))zr;-sidf ty.rk/: t/dperly placing an ammeter in a circuit consisting of one resistor and one battery. iezd)ydkr i-z)s.ytffv r s/1+;7 ztv/) r:nl 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 resisv+fe td1foh32us 1s x:tance

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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 galvanometuev,+ 0o,,z*e yq1bpyl kf in2er, 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 resistandz7 exo/-ruu m43eaifm6 29lx ce 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 vo nrul66qg8;c wltmeter across a resistor. What happens to the total current flowing in the qclu86;g nw r6circuit 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 *id 5c)q5k5ztq0x ccuvoltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividingq)xc5tkz 5* cuiqd5 c0 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+qrwingx 9w z).yr9*ozl ow.) ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of wwoyw9+i o9gz* . rz.rl))x nqthe 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, 5.0, lv* /n cj7qcb7ob bk32lc h/1dand 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, 19ia1jw:n qvepxjqt981 k il) +2, 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 6.0 t +/3t5bs xtpg$\Omega$ 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 sere cu5w .w/5bnyies 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 combinaax3rzoam( dh3 u09/ 4 ,ettfcgtion 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 2mz;d56zk 5bb sa6(qyomh.mt into 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-uqd l1i)8ln84j;qnxuoy9 gl into a 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 into a parallel combination of a 4zoowqgc13jom u /*w k-3 +sq8lr/n.mq.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 circuit: 1200-W t*cdh;ub4.n) ,rje mi soaster, 650-W coffee pot, and 600-W microwave. If all were operated4uebn *c,rsi );dmh.j 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 ligm2 x ut5mm) 1p, 4l5z;zqypgioht bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A cirzxp)m u,zm m4t5opyql ;1 52gicuit 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 2ynfy -l+g 6ps$\Omega$ 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 and6qaw n) ;u , sz(kn/kb*eua1aa 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, and+nahn6 rnyb4uc yp5-:;5ze yz 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 9vo qgo59 ue4d9.0 $\Omega$ 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 9,7re.d wj0y5i4ewny b.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 a .ar6+im kqf d c(0 8kkptv:lz(hh+s0eq2c w1tnd 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 df d4.nu(y 88qi*( o3yyf5pg opxro1:hpgq k+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 throuwroh7k9c d ;vm7a3he7gh $R_2$, 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 thvqbzy 8n77dq ,z-k2bk e 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, d 6ow7 xblo:2ugetermine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, 5y ;+xztm44szg/f7 4 4)qikgrkncaknu lfu +7 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 * rxq/0lj cfnwz/a 9z)d u3*jain 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?+p3uk 1odt-ue


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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 lc re, tx/j5q7c,ixh0point B relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to t44r6/fbmkcthoy : y9point 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 Fi7e35;gs3rfc j1u aq h+rx) vebg. 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 B in Fig. 19-5? *5k ai f24zh6ameo *apvjb -68yztl6h


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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 c2h klpk.vco4.,b *ea 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 the 8 c; sw9(:z5jqlg/(b idlqa * vq$\Omega$ 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 xa 9t.ek(p6 qtthe 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 thex, 8b6i i341 tf7,.qa h,aqpylvxjqtj 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 in9t08 1ddv /ul1p n-:yok+f3 vobhfz 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 opao-:g.cp ea +dr)z7the upper left and lower left corners?rz )peca.a p7:oog+- d

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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. T2dn7dl atiy6(he equivalent capacitance of this combination isi6 dyt7(nlad2

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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 a6e 8q vhh/rc.ycross a 12.0-V battery. How much charge is stored in the 5.00-mF capaci8qcrh /v h.ey6tor?

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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 vjtpwwtg0pkt*7sqc 3vp-o5 d 6 )7us0 50.0 mF capacitors are connected in series across a 12.0-V batu-g*ok c5tsq637pp 70w s 0td)vvjw pttery. What is the potential difference 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 ser/ ;jj7 lpwtl7 t12dv:vld vrvkl3o 02jies across a 3.0-V battery. What is the voltage across the 1.0-mF capacitor?v :7kv /2oj7l01pdlwj3l2 t;tvrvdl j

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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 co.acu 8r+sqh1x nnected in series across a 3.0-V battery. What hux q+a1 scr.8is the voltage 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 capacitog4izsr;0lll ( vv9ynb*)u-j wrs are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fully char(sz4b- vviwl gl*l;0ru j)n9y ged?

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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 parallel, and this pnby55zgvu; o;, ch qxsx)n( n-air is then connected in series with a 30-mF capacitor. What is the equivalent cxo(gy hn5);nnq-cz u;vs5bx, apacitance 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 6.0er s.5efp 3k8 ts0dvv:8rd cjox5k- ;h0 mF and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V b.8;8ordc jp s0e: kd-5kfsthvv 3xre 5attery 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 parallel. The c q8ib cdzq5v1/5n 9ntwombination is then connected in series win zq5/tqc1wn9d58 iv bth 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 azlul.xj .a+-c nd 8.00 mF are connected in parallel. The combination is then coujzlac l.+- .xnnected 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 chcvs(xdhb1 jh3q(u )v7arged 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 dii-esdu 5ztfd :fb36u :scharged 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 capu+j1rkvkw)i k, pt+svgn 77 rhhqyaa 8( 2ji/(acitor is initially uncharged. ng7/+i )yrjk 18 +(vu2j,hpatiqvs7kawkhr (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.u uq.j,h;ovy lrl. cbee/8 la/ah9:kgvc -j, 3 It is then connected in series with a 3.0 :yer/kevh cg8 al./ , 9ojh b,a;3luvjcl.-uq$M\Omega$ 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 1lh7u)c6 lhiqvl8 5geinternal 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 alh)*e be86cc4gfk02 z 1zy emr resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resis ia a0p6r-jf (fj.o+ c(vmioi4tance 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 r* *z:oc utu7dresistance 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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