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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 differel9zh4iu0y izj5kuv .( nce between the terminals of a battery, when no current flows to an external vziu.5 hzyjlu k9(0i4 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 terminalswgc )9s84;hg 2ezvjyo of a battery, when current flows to anjgeo4gs) vz 28ch;9wy external circuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are cus7hv)b 5itx m1s;-kconnected in series to a battery

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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 i.cmfx/7 kuuz ,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 resistors are connected in series to a battery. If th 2wp( gi(9/;d pvimydn6)skkhe current of 12 A flows from the battery, how much currws dvy h ng);2(kpp6k id/i9(ment 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 bfq2 *1j25oasrteo1a1 kod4 i mattery. What is the voltage across any one of theaif*5 1sadoe24t o2kj mq1ro1 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 to a constant voltage som9aafma(:r lns/2t3 xwc5j h5urce, the power supplied by the soursm( x:ca5hjl ftm9a 52an3 rw/ce

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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 inv;ahy.tz/2lpg:n(de m p z+;x 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, we can be j5jn0pgeoxo,6v. k1o/ea t b:certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to abi*q7v s. navcova 8-kagu4gh+h( -v4 12-V battery. What is the voltage of any one of the resistors(hkc8 gha7bia.ga -s4v* q4vo-+v vun ?

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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 battep gy)ih 2 ,cczbu,2js9ry. If the current of 12 A flows from the battery, how much current flows thy u,c,i )z2cgj 2h9pbsrough 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 ii7m-137l . qjseuc pvzn parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires1l-i ujvms3.cp7z e7q 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 :rzwnuj 9w3wphp+ ) u5c/kty9to a constant voltage source, the power supplied by the 5p h:k/+t)rpu w9cun 9w3 yzjwsource

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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 maximu. 2icam/dq0j0tes2/*-v lpyze 5aop m m power each can dissipate is P. Two of the resistors are connected in series, and a th5t0 eja s0mvlp*2 -cm/ ide/py.zoaq2ird 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 junction ruon2tyi ,rmbj:5,l, 5wfl2 xew le.
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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 rul,l7d5rz m3nc5v*b jeue.
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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 i 5y /htc7qde/)e.yo els 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 examf) 4vsf7 ayf/sple 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 iw otmj l/g-+g,2d li0circuit 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: dwzto8+ xpu/ct 3:tuj5pti2 series ("+" to "-" to "+" to "-"), and place them in a circuit, thejpxt o2p :t:id/ u8wc5ttu3+z 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 svn9d62al9n:ad q l dj:eries ("+" to "-" to "-" to "+"), and place them in a circuit ldl::96 9nq2avdjnad, 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 batteries together in parallel, andpa n 4w-wcs;40 ug:xoy place them in a circuit, t o;40nxgc pays-w:4uwhe 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-t xo: (vbfl-h40b ,ry w(xbtx 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 areco;j8o:fwsl2b9h ) nb connected in series, the equivalent capacitance of olsf n)9:w;cjh bob28 the combination 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 seriesk-:iir;wh w;m g3w1vj to a battery. If a total charge of Q flowrvg miwi:;h3j; w-1kws 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 :9q epo-yj8s2d k,fxvconnected 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 ara x 6e9lhwpl,f1j c(l9e connected in parallel, the equivalent capacitance of the combination increases.x9hlefp lcla ,6j91w(

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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 batta0r8 ympnqg)pzw 4ngto /j61u1d9h2 eery. If a total charge of Q flows from the battery, how much charge does each capacopnqt)az r gu 6j 19/0p y84dnm2hwge1itor 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 4v o.ucnql1 mfn 37 xh+o q)aj0:8rfqhthe 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 connee 6ccum*y ijtc)7c)c; cted in series to an ideal battery of constant terminal voltage. At thet67; y*c)eij cuccm)c 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 connecte4b) ln:lu4wovd in series to an ideal battery of constant terminal voltage. At the moment contac4o lv4:lnw )but is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected ing d,k*vilv0j v4iit3. series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistor iitvki*l. djv 04gvi,3 s

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shouldt* zkqrlpf+,66c+a 3g:b3bs /s vlkvi

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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 btiasja6xv two1h) ub o,x/ 4,3y 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 properln8)vyu/u)so7vnem d9 y placing an ammeter in a circuit consisting of one resistonmn9)e7dy/so )vvu8u r 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 resistance of an ammeter's shunt. lo h8hjju27e 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 vol)vmj;m5 g 7yo6mqc dm/tmeter from a galvanometer, 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 a voltq- siei994h5- rmfaygmeter'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 resistob ucdn ml49q/0z5jo/f r. What happens to the total current flowing in the circuit as a rez/nl q590umjoc bdf/ 4sult 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 va gmif pp 98lug3/a3v;deca3w/uy 5v3oltmeter 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 dividing the voltmeter reading by the ammeter reading, the value /igupmd533uwayv 83 ap9lc;v3/eafg 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, iia)k*pux , )4,wvutz 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 reau avz,,iwutix4)k*p )ding 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, and 4.0tu+;l3 xd fyhdmrt 0qse63+ v7 $\Omega$ 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, 2 6d/anp9oq y: buw9du12, 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, y8clq +v:1mmmsgk3 likdp3 b8a:; wv 5a4q;yj12, 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 se98 ) wzshl2ntaries 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 aeh;/pt 9pgpc* series 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 into a parallel combination:i t ,-haefhs+ 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 yp8r zfuqc5at6c9: z0 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 combinationlbbp7o) ies vm g;47+z 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,pxib+5bu 0wiw5 md0 l, ofr)s 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 thedw0 ,su55xi0 pr b+wlmfibo,)y 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 can connect in paralwg ;t, 2so uc1 cylja .i8w,ob)mff+5tlel in a 120-8lbc;ia5fw)m,y + u t.ogo2sfj1wt,cV circuit 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 2.0c27x :orlkw.x $\Omega$ 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 30 c* 4vdh46ub wk$\Omega$ 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, andb y(,moe9m2n f rmgvg7,9hx4yfn a0j* 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 andzrec6zqp 2):-j 57)s0 guob b) ugwdqq 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 9.9mprvwss do-2 m(60 tt/hoy 0w0 $\Omega$ 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 vmxp(n pn(/k)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 circuit in Fig. 192*ls vc 4ich.k-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 throu0( gdm**cn sxwgh $R_2$, 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. 19-39 zpau)sei 29q?


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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, detehtnd(j:iy/b g 2bct2) rmine 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, determine the current in t+xavf.;xp l02ovt mh0he 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, j(dc1 j og/xc(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 relative to h*x ar:5wiei: 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 o i(vry5r55mz :ou0hpv f point 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 point C in Fig. 19-rats91c 6v0x i5?


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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 twa,u 1ukn(n+2 1u fbjzn6 .yhvhe battery 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 point B in Fig. 19-b- u8inhmtcox e tvpt k6sy-,;9nc7y0(x5g3l5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current ij-pt i:h ;7z(obi)tajk :jsq :n 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 th9yb*k )-u2p *vnabigzso hy;v+em3i0 e 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 th/; iovzk d p/hs9vm20ye 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 infi: izmo(y:j -l3m./t6 tnoqn the 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 i58 *.pdaktkaf n 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 thcn(f: 5m 2wsfbe solid wire connecting the upper left and lower left cornerswfbm c25sn :f(?

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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 equivalent capacitance/f4t 0u 2u:se-a8i*rlxpw r am of this combination x08raa 2wuruis -mpel*/ft:4is

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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 g wh +o3rny b:n/og1,wacross a 12.0-V battery. How much ch/nrn oowg y3bgw+ h,1:arge 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 18,.u psssdse.0 mF capacitors are connected in series across a 12.0-V battery. What is the potential difference acro 1eu8ss p,ssd.ss 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 rrj)w30n 0zd ,l pha.ain series across a 3.0-V battery. What is the voltage r 0)pad3 hn.jwr0 al,zacross 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 acrod0ej oh)z)aa8 gh*x 5qss a 3.0-V battery. What is the voltageah)5q 0o agez)8* jhxd across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in pb vw1q bg8 jw1j;29hji9jt*gnarallel across a 24-V battery. How much energy is stored in this combination when2 ;19g*whi8w jbn jjgbj 9qvt1 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 connectvejzm -68i*rxb.0uvf8/yruted in parallel, and this pair is then connected in suurve8xf0 .* b rjmt-vz6i8y/eries 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 are conn-2f q6 bbs iy+whmgi66y;qyrpux0(4nected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalen2ibpwxin4(my 6+su- ;ry6hg6q y bfq0t 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 f j7+yf e. kasoe:r1g6x*3jra mF and 8.00 mF are 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 charge on the 6.00-mF carg6fka3f7ojy e xr :e1j.+*sa pacitor?

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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 iosl.9z j;m 0wt+-*ctxalyk*kn parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is thec;ta0j **+ xow sk.llmzk9-ty 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 i otm6,j9zlw.:iqz8al x2wf2ps charged 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 th,9g 4:4lq+r 0wcwp)pvbr5 d as vzsx4,erpdp 3en 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. The capac1n6 )wmnjoi9w itor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in v6w 9j moi1nw)noltage 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 sxc +qa1pad6 1p;mr m9leries with a 3.0 p ;aplm m 911xca6rq+d$M\Omega$ 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*u nonw44i8 cr mc-)s zqqoe67 internal 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 4 m12ntr7f bzbcoil with 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 resistance of ;;xnkk-tik08bx;*: ;ucyo vupvq 2wf100 $\Omega$ 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 coile: fmzd//5f bo:5o rho 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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