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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 differe,t6*n vvay0sa 2r2xbynce between the terminals of a battery, when no current flows to an exta6n02xvrytv a*sy b ,2ernal 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 terminalsf lvz+bzr(21c/:0q4lmo 249 smodmc j v9mcyw of a battery, when current flows to an external circuit, is refe 4cm4/fmwqrc+ld0m2my ( o 9zs9zvoj1v cb:l2rred 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 battery*o fugg ,kii4p4n l.sthf8m02

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connect1 zwlq,m6 / ;pn(adqdxed 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.5-tv;mz hds*aa; o lv9 If the current of 12 A flows from the bat a9;vzh*m l sov;5-tadtery, 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 xm: gr8cg 2o+ez..mxo;5rakz series to a 12-V battery. What is the 5 zoecg.rk x2xg;z8+mm ro: .avoltage 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 qzjfj b94f60xd hwd 3:yei,1x added in series to a constant voltage source, the power supplied by the q1x649jx0f 3fjd yw, h bizd:esource

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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 u gkd4y pm/bf9yof20 j71qry0 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, we can be 6yw unto1h, /l+x ir7p0- dvgpcertain 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. Wc7dmhntz5/z7yxv d; 2,nzyd4hat is the voltage ont72d, mv7 cyn/5 ;zyxzzh4dd f 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 cuv7n. n:wmnzr rz,tfbhk7hg 4)9(: usonnected in parallel to a battery. If the currenf kh: nt97u h)muwrsrzg,znbv7(:.n4t of 12 A flows from the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights are connected in parallel. Wh;shk)wt.u bs; at happens if one lamp burns out? (Assume neglibts .s);ku ;whgible 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 too+we e 68ddx7d a constant voltage source, the power supplied b e+x67dddo8 wey 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 resistd en :xy;gibf16t ndo+0w u7kok -u6c-ors, each of resistance R. The maximum power each can dissipate is7- wuni :1 ok+og6t-yfcn0; 6ebkudxd 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 juncyau/p( b3ynrols 50 (xtion 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 lop83 ef zchq(x/:1fa0a7pjf r yop rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule is an example mgdum0,vvi, v4/pb9 y 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.)s9 b0xxtptmcr.m y+ 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 ther 0+ :(qrs,rj-zkz9k(fw .4yzvky oaf 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 together in series (.f/:9yx ypkxjsc*s4i "+" to "-" to "+" to "-"), and place them in a circuit, the combination py 9if4 /:csjsxxk.*ywill 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 i 2j;x88z lalctn series ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provl l;8cjxt82za ide

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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 batteries together in parallel, and pla z m d /mx:(0.:)ohoz7rdbsngzce them in a g7:d/o:z (z.m 0zh)o nbdxsmr 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 connehsydi4yzr*; 3 cted 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 in series,r q697y x5ibp 2bltg(kxw06 jx the equivalent capacitance of the combpj7bwqbx il5 6x(x2t9gk6r0 yination 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 aj,5 hge6mwjp31 z(mn n9op*rin series to a battery. If a total charge of Q flows from the battery, hm95ph zojn p*3(emjan1,g 6wr ow 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 parallel to a e2htos xs64f0battery,

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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 arhy vx2moi v.1z7e7jzf m7k *4hyuo k7)e connected in parallel, the equivalent capacitance of the com74fo2z xovk7h zjy*iv. em)7kym7 u1hbination 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. If a totas9(4dy zt;g1k 5tbs ffx 1*yc-rtmt3al charge of Q flows from the g* -1y4dsf9 mr3 z a;tbyt5st(ct1 kxfbattery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the qu *1 ur2jjwo 0mdn7gaj763 tcncantity 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 connecte+o bva8wv:u ap*z(-fxxhp4x.d in series to an ideal battery of constant terminal voltage. At the momenzxbf-o*u8 4hv. (av+w xpaxp:t 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 connectio6+fix 1571nho /vg 7 wksypoed in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltghw6i n/v5fioo1o x7sk7+1p yage 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 (cbnqr(mj1 8 kan ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across ther1kq(b 8(nmjc 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 shouldzzkfo45v 7s3 l52kudt

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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 addition or(ur, f5j)rmrf 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 objle3ye g:c;cwluq74q uw7m8k nro 6. 8tained by properly placing an ammeter in a circuit consisting of one resi.we w:j 3re nu u8cglclq;qok746my87stor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistan 6l32 9przcwwte3+eom ce of an 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 g z mrp/mg(:22q- l;yxnxhxi*talvanometer, 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 5q0ds b6q x9ze:lk2(aauk s2 xa 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 resis:;jzjpob ;dt 4tor. What happens to the tota 4o;tz;pj jd:bl 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 wiredlsi)q tw* -o jhw,squi)+anrq0. z1h(ty b51g in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then pit+ ha*j rln),0w5tzq(y.)iugqs w 1qo1hb-slaced across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmeter is planw6q :-u chm zdrg6*d .0ogmt.ced in parallel across the resistor only. .dcg-nhmzum0 * g.t 6oq6rwd: 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, 3.0, 5.0, a* p/njnyg zcd6n8 ir .-:*wtmbnd 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 bh-kbc0z0 h4h, 12, 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, 0tly, a0opajdl/s. p .12, 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 seriez/u6y-8sf4cl ssu+qy ky +3vos 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 combination of ag typ gkvu/,oyu) r+,16c ixt9 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination vtjbtfu) --m3 -ocw. aof 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 paralldk;a:lit4-6wd3ijn 1 a9 k q 3zjq6sokel 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:b*1 b ssfo 1 5r,c3azhn4cbxm combination 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 api /mw-vg ebll s;2/vmeh13ye9pliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they drawb yvemsv;w e-1 /lh lme23g/i9?

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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 numbtie1f8x iy6 - i6kz3tper of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 203tif i pi6 8k-tezy61x-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 aed4cb:s(, te cz2m p0$\Omega$ 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 andhm6q-+ h /pb* eqyqgyb*w3m6m 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, 8cshcdw4 .8rq; v:fkn/z79bkk k 0 kfl6.0, and 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 9h5.w*p+dyzl mfu .k2 s.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 ih qlv3 ;wi*crf86 fz*$\Omega$ 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:swvxa vq-u, 3 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 , p)9plh 4l ;jiseeu2ncircuit 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 throun lmt 5zll:7+kgh $R_2$, 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. 19-3? huay+9rf,w l tf/az)0


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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 r09 o8y zpmh2bcac-h-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 the current in the 3 8ea9n flj -*gwk9rv4x rh2zm8$\Omega$ 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 curren66obort 1l )r8 y, 1smw-o7xq ziu firoliq6(9t in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point C ix2 wp:lqg .-qjhp7e,an 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. 19-5?6ci,u 11ih 6rx1gfreq8k*n5 bj.i cc o


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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 in Fig. ke*)a3 ck)ch )6q2zrmq/plm j19-5?


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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 ba ji20/roxly a3+g1sa:i )jw dd5*tymq ttery 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 point A to po8. rfi/ley-9zdn)fdr int 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 7 oqqr y3g1v,znpnr9kqr )ko 5y-*c ( o3$\Omega$ 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 currentaues 4w:70 eqtc9;d tv in the 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 4 ynbrg20:yxz rnx :77xb/jyb ,$\Omega$ 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*pwcok 4*so6i $\Omega$ 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 1h 9g(+-o,4a o wjhgnz9axjwt :8 $\Omega$ 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 tqd5hydapu57agwu4 h zj7:7cg t703 n*qngf+z he solid wire connecting the upper left and lower left corne7dq0nza q 7gtf55gnc:* hg7d4ujpz3 a wu+7yhrs?

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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. wxr4 :.2 - gdkhwrhly: The equivalent capacitance of this combh. :h2 :xw4rwylr dgk-ination 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 auvf75k: pq +oocross a 12.0-V battery. Howuo :pkq57 vfo+ much charge is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in s as ,it(z*3x2kockdi 5d4ssc3eries across a 12.0-V battery. What is thc sx(dia kiocztd32s,4 5k3s*e 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 series across a 3.0-V batterevgbhri s,rl1;9 qa dnwj 0 b ky4x:v+r;m1+4ry. What k ;ls94b;yx: rarv bd wr1+rmnjge+4,h0i1vqis the 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 ar .q b6e9yglw0*xfbfh 3e connected in series across a 3.0-V battery. 0*q bbfeflh 93xy.w6g What is 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 capacv5kg b 9hegon3zrudy;/**c)o itors are connected in parallel across a 24-V battery. How much energy is storeuggn)rck/oov3b9hy*d* z5 e;d 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 an n3 ,,c v1 5j1jou,xcmphimr2cd 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. Wcupcnj, m1 ,c 1o3vm ,2j5rihxhat 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( 29ngto-s2 dzws yxu1 and 8.00 mF are connected in parallel. The combination is then connected in series with a 12.0-V battery szw(o1g2 stn d2-x9uy 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 cwps9/w 5.dwp7gg ;7jeknii8ekmbn -/ia2)tl onnected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF ci/ln/s;-ap b pei tmw e 8dw 9k7i.2gwn5g)kj7apacitor. 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. The c+(kvi 2gquo j7ombination is then connected in series with a 12.0-V batt27(ujiqv o+ gkery 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 pg;9 yp8.ve0*iu7epy- y uvx egq 4al)$k\Omega$ 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,1xp 87muxtw i 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 ser 5rdf 9l s8q1tma8ah9uies with a 0.50-mF capacitor. The capacitor is initially uncharged. Thedtl1um8s9rh 5q aa 8f9 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. Inc txu9: h*8 nwfa1q d70+vbezt is then connected in series with a 3.8:xe n9f vwctuq7* 1hdn0+baz0 $M\Omega$ 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 resistantqy(9vvu1a urde) n- *ce 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 r/ay6tlo ;jqq(esistance 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 resil l20.crp,r25;m5ig je lckqistance 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 z-iea7 ebf.y+,ei)u g a coil resistance 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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    总分:102分 及格:61.2分 时间:不限时
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