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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 terminalsp u c8 ;)up7aox9/;q(yc4rnso5kiyzm o. mw-f of a battery, when no current flows to an ext(r)u;z/fwounkm i9-m7p;o.5 xc 48cypyaqo sernal 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 betku72y4wie9e+l t e+xw ween the terminals of a battery, when current flows to an external circuit, is x+eu 4kt+yiw w9e 2el7referred 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 / nb f7pxv3wix2dm7 (ybattery

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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 in se:za.g/taqy/y -0.8 :oaht- jc0u2w xojo oojdries,

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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 battermvowi8 /60t- m0zl(f cqv4zjh yx+ud0y. If the current of 12 A flows fro-qxzuihdm tc0 l04vv0z woy8 6/j+mf(m 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 toqkr8r y fw3*qm2v/w:q a 12-V battery. What is the voltagv8/f:3qywq 2 kwr*q mre 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 serieb d s5l 3(iodrqt/ pud4ld3 lxt;3r713m2imzzs to a constant voltage source, the power supplied by d73/ii531(dus32 mztxl tqzrrpll3d mb 4; do 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 battery,v 5txlf 3o8/6wpug ;yx( 2sfsl

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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, we can bxhwbfx2d6 2b1fhw +.ce 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 parallem8-,fpk xd w0/gh(udl.f 5opzl to a 12-V battery. What is the voltage ofxo g-l zd,f.kpdhpf8u0m /w5( 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 a batter41r- i; co-k glvuv9pun+dvq( y. If the current of 1 k qv cuuio +vgv(nr91d4--p;l2 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 treau 4s 9b hk0mvmn;t/g,e lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lam bs,k;t/hnvm u0 9ag4mps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors arxn6 gw 8q0 5ji-j1fg1k3rv*nbl8wzq pe added in parallel to a constant voltage source, the power supplied by the s1qgj3bp 8nlwi1fw zvj -0k8x6q5g*nr ource

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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 resisxibct m4ll y3xixxq5)8--f -m tance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected i clt3l x-xbm--xfm 5 xy)q84iin 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 ju.lzz;0 4xkdpa nction 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 ruls pk pg/q2g.:byb jp-:e.
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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 exa 9t-;)ie jepgwmple 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 exoo+n6h fmy .4aample 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 ty ple 3i3e3d,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 t7hm l 8ow4w(lmz6d *ygogether in series ("+" to "-" to "+" to "-"), and place them in a circui(ml7 gld8 6wmo*z4hwyt, 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 iden, x9ipms6tws 7w14vyvtical storage batteries together in series ("+" to "-" to x4pv wy 6971istwmv,s"-" to "+"), 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 batterh xe;gdt4 gz0cd5 j./g sc;)ilies together in parallel, and place them in a circuit, the combination will providehzlccex.s g5 jtd;04)d ;i/g g

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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 sk 8v i--yisuan1z7(rd-, 6 vq yk5tucyeries 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 in series, 4jf6(xplsbi5mimj3v7 lesd82vv)e3 the equivalent capacitance of the com ev vjjdmpvml75 isi)x62 348b3l(sefbination 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. If a t)k 1*9.hcm mwpc gk8bpotal charge o81gwk c).b 9 pcpmk*hmf Q 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 connecs6s 9tfnm11lj id(1mmted 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 connected in parallel, the et mtlncao/. pp3o 5 40ed9t6zqquivalent capacitance of the combination incr6 a4 /lo0nt.mqt3c5p9 dtop zeeases.

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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 parallell7 -nbz 2cevq1 to a battery. If a total charge of b-nlz 71q2vec 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 8 bzd26pwyj6g-a k 7:ga sehpm1 +0vrcthe quantity 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 conne7sewb7jr:yq:h )s4 sspzv1i(cted in series to an ideal battery of constant terminal voltage. At r(jisz7 :ps7y b:svwe)h1 qs4the 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 epovzb3 ) 3-ghare connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the volt3h-3b op)vez gage 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 capacitay;uprgmxd +m 7f1 .9xor are connected in series to an ideal battery of constant terminal voltage;pdmm xu g1 7x9+yafr.. 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 shouldlyih +pzt0j-k(sq o9vv yoz;. .l7ot+

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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 t6k 7dqvmp-zd /o 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 circuitvq2-;ks n*i1ppsw v4 vrm2 s*g consisting of one resistor and one b- v**mks ;q21wnsvg2i vsp4 rpattery. 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 shunc (w61f2s j jlb1cmp2rt 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 galvanomexjg63kg +w3dnter, 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 resistance of a3+sewi,j19vnl/lj 5n kpj ec8 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 across a resistor. What hxk effjug9e3/,;ee ;yv5 mxbh0 ;f b0bappens to t,b3; ;/h 0gjxee fxm vbyefbke90f5u ;he 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 ammeter, and a 853i7wvvbdre)p (p9fb w h mj3*sob z1voltmeter is placed in parallel across b3vdw(73p*hw5)e mpboz s8if j19bvb roth 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 w(0 y(j( b krs6ndi/wu lj9:smcith an 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 the resistance by dividing the voltmeter reading by the ammeter reading, the value (csmkyl/wrn 9 b0j(i (6jd :suobtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, and n7l8 ( setygae4*vn(x4.0 $\Omega$ 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, 82niy h-wuecj- x:.o,cpxp 0 uand 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, 12m(avb .wr6l,v , 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 series s5*h8;i*nkch5 -hgzggmo s6 fcombination 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 serrhjn+)1d 1 mgdnpv+t1 ies 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 intfb66; dqy *b ,v.ap/.la exxkfo 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 parallel c0(*b7t+bvq 31k uv qcty,br bcombination 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 4.y;z u7;c5g;kbcd;x ye0 $\Omega$, 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 ci/ gauh0i, uka-rcuit: 1200-W toaster, 650-W coffee pot, and 60/ik, a0ghau-u0-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 bulbs you cajtrqf.bd:9qwojl-- 1 msv d-.n connect in parallel in a 120-V circuit without:v.b1jd9 m qt -l.-fjrdqso w- 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 pd0j z dbb)z234mzujz zb:v.9 $\Omega$ 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 mmd 3 smm30p/bzn7js9and 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, anynot*fl1ubkju5 // ld5z:51pd dsto( d 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 9;;:trnjn; o x9qi 54tfu7 zuks.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 9.0jy-5- gd3.zekrc u zy5 $\Omega$ 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.;y-p kw-m/npo+w3 6yvw6 ,oe5/qb2sumg py my0 $\Omega$ 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 Fig. 19zbllmg-4seh 2exxt76/k1 h(, dkgig9-2?


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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 v7rzq 7c1oqt 48c13nqh4im ns$R_2$, 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 th-c6vh 9kq+8bcm y srg,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, determine the current in the 1rv+ri(m gqkf.-h*)gh $\Omega$ 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, determinkzv0:yj9ifji1 ,: mrde 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. 19ybx b/ue0 0s9 s+slwjo-s +*3ud+ kvyi-4, 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 ro,roq5 +m:x;tnjta+ of 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-pi r)uev,vem: *)z eo95?


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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 povj-7ol, t)v5)ueks edint 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. 19-b3v dsby0 jq2+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.b-7-z)8 p;3i5lhffdw kzxck u 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 7qx n(c 0;j ndkq2mr.zthe 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 currenv-ld3 vx *8jzet 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 r04548 uod y9i8ymy:o urimqhin the 4 $\Omega$ resistor in Fig. 19-6.


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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 12 +jk r2ai qzq:sg: us*7$\Omega$ 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 int.2htvqt+2cs yekl)+q 0 hi c( the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and lower left ch71ls4 2gpikv)l6 e6 fgwn3 ;g/kb mwcorne;/v2sp gh4clfn31blg km6w7g)6 w keirs?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitors are connected in series. The eq *dp8:9xikj soh7uzy*/+kt;2m lrxbouivalent capacitance of this yx*oxso9 7miku28rlk:h t+zb* j /d;pcombination 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 capa- a4bg2v)dk. (mfx8pzvtui f6citors are connected in series across a 12.0-V battery. How 4 -pifkufm2dabt(.z v) 8vxg6 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 abe2r3 i dt2q3yre connected in series across a 12.0-V battery. What is the potential difference across the 10.0-mF capacbyt2d e2r33iqitor?

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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 acr3ql j8citma5t * :9lq) ;sancjoss a 3.0-V battery. What is the voltage ctlq83as;95 qtic:nlmja* )j 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 battery p68 g:8jnfeyk- gye3w. What is the voltage across-n 6 :egwy88k3f gpejy 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 capacitoyp,s-z*,hxz y g7ifm; n)0l (mdtz/by rs are connected in parallel across a 24-V battery. How much energy is stored in this csy*zxdyzm7/0b )p h,,y(t l-gmfzn;iombination 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 parallel, and this pais,pqk o p5-4tbr is then connected inbk -pqp,4st o5 series with a 30-mF capacitor. What is the equivalent capacitance 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 mF and 8.00 mF arekan++ 9u wz/):zemoza connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacz:oz++ nma z)uae/9wk itance?

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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 co9 md;l2oh. znn*qk *oembination is then connected in series with a 12.0hznlo9e.;m*q n 2*d ko-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. Thef j0-(+9 2t vi/zvc0ufiy)nn 7jbwmki combination 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 capa)jv fb v( y7icz0nik /t+iw290fnujm-citor?

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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 xd,fy36rb+y 1bsv 4gha 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 ch)zhbp0lz2 5+ d(ll.yehja.ekbb: cz .arged 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 connezpq23 *elfi jj,ib 3 mrha6b1/cted 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 voltage b m33eijbqz2/61,il *ba phrjfetween 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 y3j yk-ud8yu/u( ix53wxejxas w,4c6co((vis then connected in series with a 3.0 i8(yx, (yj 35oc3sax-vux wjd4ke (i6/wcu uy$M\Omega$ 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 resistance of 10,n9-feqq r6 ws0 $\Omega$ 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 withsnj r w;ibmmxh ;.05r* a 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 resist3jhq+ v*a - 1w hqtbb.fguq9b5ance 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 resis ;;kf35m e g9lrg1pwqdbs2 0oftance 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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