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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 vy6;f sx t,n7xen b4d+of a battery, when no current flows to an externv7+t6n,sex4x bf;d ynal 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 b1yc*7-; 3kxy+ 8vr batrgx fk .okhi-qetween the terminals of a battery, when current flows to an external .;k--3fkq1txr ky+7 a g r*byhxv o8cicircuit, 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 connected in serig5-/5czzaa4 2jgy ec bes 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 in serkqp915bu egz/6 umop ;ies,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistd-un*a( :ulkd ors are connected in series to a battery. If the current ua (u-d d:kn*lof 12 A flows from 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 c)2df i cp :od:n+eg9mwonnected in series to a 12-V battery. What is thei9 en : mwgdpf:cd)+2o voltage across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are ad0bu .ud/alrxy-qnfn i-- 7 ne,ded in series to a constant voltage source, the power supplied by the source/lain x- r7b0, qudfunn-e.y-

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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 resistorsjaaszkm4yk2y va9 : f*k/+a1w are connected in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in parallel, 7 vv1safe 3u3e qmab028,vrenfya,-vwe 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 connecteg gowih2 k4gv8*c2f k)d in parallel to a 12-V battery. What is the voltage of any one of the ggfi2hv2 kg4ok wc*)8resistors?

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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 c fz +*hyo-(k9nzan6dh onnected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of thk(nyoz96*hh zn+-af d e 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 trw,m oejz mt,aj588n*1h ,ki psee lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistani *s natmkj8 1we5 mjz,,poh8,ce 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 voltage sourcizoff2d9x z ,*we7s* ye, the power supplied by the *d9x,sffzo2e zwy*7i 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 maximum po*5b2tovlk h2ower each 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 m52tlbvho o 2*kaximum 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 junctidxbm2 ;fecuqzo7 igtjj*-. 43 on 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 loopuhlqmp*;:75k cu(5e,r u sy wl5r ,fyu 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*it i8 ewer)djft38b6 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 naded;su :-ai h9c dcf )f,7h4of

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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 cm9ky.o6 5 -,irhnlc lcircuit 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 ("+" 0iow c7;h:;yy jixh2 cto "-" to "+" to "-"), and place them in a circuit, the combinatiwcyo: hi i0x;hy7c;2jon will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+ vbjnf6w m6b-aa/k,l* " to "-" to "-" to "+"), and place them in a circuit, the combina-,mba/ n6* lbk6avwjf tion 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, a(qn75y9z uta zg :pt:knd place them in a circuit, the combin 7a gu:tqkzn(9 :p5ytzation 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 battergndgv1()9 qo fy,

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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, the equivalent capacitanceua9+5 6t h bdidi-nq:5e8ewz w of the combination inc t e6h q5z+w95w:dadbeiniu8-reases.

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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 cond/9,b :pk. elzsy bp0unected in series to a battery. If a total charge of Q flows from the battery, how lbu yp/.k,ebs d0 9:pzmuch 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 battery,vev+d; qemzq7 .z9k8o

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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 pav*puhv+h7eg/ z1i o2 c(xrk/y rallel, the equivalent capacitance( 7yg/c+ ivekp1/xr*hohvuz2 of the combination 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 connect h tycy;nzb pvty8q +7l)d(8h3ed in parallel to a battery. If a total charge of Q flot8l 3y(pnyv t87)ch;+ dbyqhzws 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 the qsv 8a 8yj3ef3j1jt/ 8isg lya,uantity 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 capz7fhvch4c-bv,7cz l1 acitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the capacitorcl zcv 7vc 7fh-1z4,hb 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 capacs q o/ry:rw ,fst57ut/itor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with to5fy qsr7 ts ,/tu/:rwhe 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 xy9kktpq(+u3(.8o h3emv6r-r avx n i are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steainxo9vtx h8m( ra pe-kqu6 vy.r3+(3kdy-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 shouz; -31odplj9dg1zyq)h 5bdkp c (q 0ajld

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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 of aqd)-.f4 yd,ooisiv; 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 circuity 3m,3d vu qlkfblbk/h752wv) consisting of one resistor and one battkyl7/ m, f2)wbbl3v5ku 3vqhdery. 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 rpxk (fwyvwkm;i+ r379esistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a voltmeter from a galvanometer, ofg c,ro8m346zlpvn c,ne 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 resistance7qz1b 4zjho.duny7 am )o5 p1s 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 itl4o(zea ed6d-tb/ 8 placing a voltmeter across a resistor. What happens to tet(bti -odad 46z8e/lhe 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 se ;3muv5v :jv*u6trlap ries with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed v ;563 ju:uvpmartv*lacross 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 voltmetez wg1,gan 6vw )2ae,rbr 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 valuew6n zga2r1)w,,ebavg 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 4.0 y-a ntxi k4et0wzr. ,,/9zsyb$\Omega$ 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 12v,r;z,hkux -gig6qypc5 b0:vi uso/0, 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 1 * h,9hu l6gitui84uym2, 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 series combinatieo+b *68wjf;i;e2kl bub* t agon 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 combinatv:o1 p-)mnsj z k1p5ruion 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 combd9mi ce ja tks;7ohpz-c7u34: ination 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 combinv8wk-tvi fk),t1z r0 oation 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.hu -+tpute yo0pk6)+ xjbmf3 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circuit: 1200-+*v cxchwdvs+hs+1r,3 b plw8rh sd(8W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what 3 8ssrxch l (1rhsv+,wcbv*d+dhw+8ptotal 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 bulbs8oa*pzgtz 9jt ( 9ybw0 you can connect in parallel in a 120-V circuit without trippi (wp jag o8ty0*9bz9ztng 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 lv5zdzekb( z - oq6/:q /bl(jr$\Omega$ 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 30kk+w)lwuzn+i a*m 3m8 u-a ,lm $\Omega$ 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, andv+:yz jzwi.t+v bcad1 +f9yy; 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 x5qne3wu+a6 *q0,,u7 aamx c xcz ty6b9.0 $\Omega$ 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 gn 3hxu+ //h9ix8kcvk$\Omega$ 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 andnw89 b*qsno*j (vh j;h 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 )z4b4)xo ;kr pq+spadin 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 throug8 + og:y:jpb;b.g (;o ggmazsjh $R_2$, 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? x+(gmc;tu fl6rx3ue *


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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, xlg 6k8b: ul+tdetermine 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, deteuiw9mq; s3avbak37, frmine 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 F s.w +x- fu*y/ h;7ik6qkpbnbkig. 19-4, 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 of poin9)o92x hd8tuw1)xjdt+kaa fk3cml wz-p:z d/t 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 phry .iw.5- jkto 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)1x;zu) i( y.epsxqjx relative to point C in Fig. 19-5?


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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows from th;cec-cwsqx- uq * r9i4e 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-u: q o(lbtjgmfw3q8 6dh0t t975?


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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 n 6 ) :x2w: 7zpc2/qnbw;1piag0hngs2tgfjmy$\Omega$ 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 theip8e67xd6 hf 3b kvkn* 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 curren w(7cd e9sk 5pkwo+kg)t in 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 t-yk*v/( 3ryv5 ltaar 4tc,ok rhe 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 inoejt1: biqo6 o9 x:ex3 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 anzlh: ix6buxf) xy rr-j 1d/..ad lower left corld xh x zrf:/a.r6.i 1xj)byu-ners?

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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 efxm8tjqpd2s rf305t 0k+7s i series. The equivalent capacitance of this combind i83qs2jt krx sm70f+0ef5tp ation 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 seriey pgpo .:)idk9db3a5b s across a 12.0-V battery. How mu5g io bpba:3dd9p)y.kch 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 series acrosfrku 63;fh w7+av-ia es a 12.0-V battery. What is the p +ehva-;k76a ir3uffwotential 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 m*b ce 5/3mdkqk7/xo g3.0-V battery. What is the volgom3c kd*7be/q/x 5 mktage 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-m .d 9 oh-nqn;2qp2hurr6a( guw1skz f1F capacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0a - ho 16dh1zuurnr 2nwkf;.pgqs2(9q-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 conwq tx 0,7cu5rknected in parallel across a 24-V battery. How much energy is stored in thi kq5r0ux,7c tws 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 and 20 mF are conn;miilb,251ql95 lgtkjwrmd e,u)t8tected in parallel, and this pair is then connected in series wi)iglbw5t,elq1t 28;, km9rj mtudl5 ith 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 conr3. ,ci 3hvnfznected in parallel. The combination is then connected in series with a 12.0-V batt,nc3hfi3z.r very 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 para6v3zemu.30pais rh u 2llel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charg60 eprauhz. 3su2im3ve 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 pah.- /arxxo, oib6tr k6rallel. The combination is then cio-.xo rxka, 6b/r6 thonnected 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 chaz(b q ::dwda6crged 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 disc /yqv.8vuv bupg t: *t2zyh,0fharged 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 capacito ,s0*fl xg:vj )4(tu(vrv+uyk zuwki4 w+4 yku4u)vruij:tv v x( 0kfszl*,(gr is initially uncharged. 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. It is then connected 910+h7rkgvxbj;qk v l in series with a 3; q0lvbx9hv k7j1rk g+.0 $M\Omega$ 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 resir.ey0bv 8 ayy0stance 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 resista mor6gh v1x.oby8c 0wiv5ov l*:y.rd 4nce 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 resist6cbzzf+ l 7:loance 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 resist vtmlhs7ynugu t., y.g*-uc-.ance 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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