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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 t2xyf)oxll4 uzg/p2 / x+xwp /kerminals of a battery, when no current flows to an external circuit, is referred to as th2lyf kulx /w/2x4 x)/p xp+gzoe

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference betwey afjo6zxoh0ao 4; . s j)zw5i4mfr6nc9h+l)len the terminals of a battery, when current flows to an external circuit, in9ara6ilzyc . )m ;hjxjz405oh fl4wf+ 6so )os 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 sex 0t81nzr3*ue*f y lkf.a0soo6l e)x yries 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 series;s klr8. -oboijl77wj1 n6m/b:cbz wv,

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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 ba ny ;fnu ) 6p/g7b/hjjndv4h(kttery. If the current of 12 A flows from the battery, how much cur/d )ku4/vnhjnhny(7j 6;bp gfrent flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. What is j v:2251s c,l zjo4slig8fvu jthe voltage lvsg:5 j,o 8szluv12jj 2ifc 4across 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 series to a constant vol5 q7 kku*b5bratage source, the power supplied by the sk75 k*abb ur5qource

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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 confbf7l2va(q s zth7xjie4)6z7 nected 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 i tk bpi,6(kab91v,x nl50vyk cn parallel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12-V pqvjkv4k : 2w;v)2m+z vzg x;pnyw;*gbattery. What is the voltage of any one of the rexnk2qpvzk;;gm 2 vw4zw)gvy;*+pv j :sistors?

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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 parkh hqnnl*t +rd,:yt47allel to a battery. If the current of 12 A flows from the battel+:k4hd,tq*tr yhn 7nry, 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 coovr:* ftd)aic dv51 4bnnected in parallel. What happens4r bv)1vd* acftiod5 : if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in p m 7by-7/nh(x 8dxtbixarallel to a constant voltage source, the power suppl/h x b( 7d8mnxy-t7xibied by the source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resistors, each h si-)w7w1gc1es1 p fbof resistance R. The maximum power each can dissipate is P. Two of thee1pih wf bg-1s ws17c) 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 juncti6x9 cm(e5hfys tynhb)(7 k,tbon 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 ruek ib6)cctww4 a, pocr;6 he*4le.
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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 examw2 ; +jlc,bg+;ug 9oizplf(fople 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 r lv a fp4uo5zy06h3to( 5homc+ule 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 the circuit shownhv3rpnewp ;a (nxcsv :,d4v 5mic2*u5?


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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 ("+" tx6tkjif ( 8 v**)h7*dd elngdwb z7l1io "-" to "+" to "-"), and place them in*7 d6jef)vdtilx78 dig kwhlnbz**(1 a circuit, 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 identical storage batteries together in serb6gfw s:l7 n2oies ("+" to "-" to "-" to "+"), and place them in a circuit, the combination will provnf:l67wg s2ob 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, qv;-qpq1nmg *and place them in a circuit, the combinatpgq1mq-v *q;nion 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 are8jsk 71 yxa8a you+t4yrz 4q8e connected 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 capacito4.s 9t1vquy jb d/5locy3(zsmk-0dtf rs are connected in series, the equivalent capacitance of the j3 y5 yt/ldqtc ub-s zfv9dko(. s401mcombination 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 x n34r fq5 .0kjnd l/bly4pw6ho6/ mmware connected in series to a battery. If a total charge of Q flows from the battery, how much cha/w km 043o5yrx.6bl/hd4nl qp6n jfmw rge 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 a1+sk*aizkzo3t1wi br;o- ) xm re connected 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 equiv -r96lbflma s/alent capacitance/ 6m labsr9f-l 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 connected in r) mgr5b c1j.qc0bi u3h- t:tl 2u1-a/ulibihparallel to a battery. If a total charge of Q flows frh -jbut02q )c:- bh3ltilgi. /bc5riua1ur 1mom 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 quantitys m)h:-nr u-/w;8v6ez vzxdpu RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal battery of conb d.b9*f3l s0ua/v6ozu e,bajstant terminal voltage. At the moment contact is made with the battery, the voltage acros aa.uls/bb6z 9vbj*,f0 d 3uoes the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal 2gkw.ve;txv2 w,+ ity g)ge p;battery of constant terminal voltage. At the m ttgpeg. k;,xvwg );ew2+yi2v oment contact 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 in series rks8d7., ;a9 y;n gd(3ktsnuaxt s9ko to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resi d; r;ds9o9 a3k7.nsugnky, k(t8sax tstor 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 should c5p(rqz v (twlbfg.-*

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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 conve; 9qay67ngfk*:j .bwdwhgir )q -gm.arted to 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 circuit c9br,vl57lj7kyhol8v wv z6h )onsisting of one resistor and one battery. As a zhrj8ov5)k9whl ,7b6l7v l y vresult,

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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 shp dzd89h: s1dsunt 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 galvanometer, one normally wouje8fp2c++pnk5 v hc9b ld

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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 lnzx8-p ..p q ;xh5glna 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 plajg6(3 * -qxnwah+xnt mcing a voltmeter across a resistor. What happens to the total current flowing in the circuit as +-6nwx ha3mtqn x*(jga 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 imob+:. 4o ta4 cye0bh8/ f;shm emrd1ts wired in series with an ammeter, and a voltmeter 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 orh .t +ob 8hmamo t4:emcs1 4db;e0f/ybtained

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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 wirey4 gi maet9y3f,nea)u-ujq(/x3yf w7d in series with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes thq,jyu/ 9(m3y)iuwn y3f axe7ea4-fg te 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 12dbsmni9 kgtj,3/y:8 -r z( fjd, 3.0, 5.0, and 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 12,8be87zdunf y4:i fvn/; 5vyq7:tsjh h 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, 12, and b-seyo)ti0 :jww**pa 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 serpyn6oh rk:b2z;ky4 mh :a 8pp;ies 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 s 5+ xrmi vv6nml*t.ia3eries 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 i, tr) -bx;yoiu2 ft iwol8j6(into a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel comk:4hr pwi2f7i* i )/cxsfg:j/ej4pfqbination 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 com,yrwrio5-,zbakw0s2so + *l wbination 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 are connected to a 120-V circuit: 1200-W toaster,xn0( dif4m50attldnj1 jqwk;y1 j j (* 650-W coffee pot, and 600-W microwave. If all were operated at the same time wdn*l1(j4j0(iam5 wj; qjdf 10ty kntxhat 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 can o:ld07ndr 2ao4nia-nconnect in parallel in a 120- a0lrod4n2i7n no: ad-V 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 2.0 ev0jdnq ,fi.3 s+lg. g$\Omega$ 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 yp qv,51rsl*ya + lcf*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 4i( 6k q)rhj ;1io9lz9 xtn/zgg.0, 6.0, 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 5.0losb.r2-5ujqhp tl 7 8 and 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 x.sgw/0zo0u r 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 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 )v/npw9l.q gr-r(xh0 jo /tvrvy(+op 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. b 3h4gh/64zi ldypi7l19-2?


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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 throughel6 q; ffqoc46 k0jy;g0azm6h $R_2$, 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 resistf3,svxs 1hbe) ance of the 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 t cm8uc1q8p h hhc4(slis)a0/khj (6bwhe 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 3qo* -re: vqsj)obld, 4tn4wh, $\Omega$ 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. 19-4mxo1 p;5j3y4f jelvimw +9t;v, 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 r(s* (n :m2i9quhgr iiwh-oz:ielative 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. 19-5b0q u 2m(zg:s)lkgpv 4?


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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- 9o;mg1as y yrcl24.b+ pyq0jx-vj) yp5?


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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. 19-5?4 2igloe1ch8y


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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 fv. j c-hd/f10 ipwypn8rom point A to point 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 a.pc y nj8p7+zw+o kz27 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 8 w1 n ;ds m-w.co;yfqt0$\Omega$ 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 currentf *x.al prmp,)j- yjl( 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 thu e)w h,9h3sx7zjn h fi*m*8rc(r2k yoe 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 18 2khnsemqxu+ 4xuq0,,$\Omega$ 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 conne6zvlmk+4pv ,t5teh,r 0 c+kiacting the upper left and lower left co,54a mp , h6evckvtlkr it+z0+rners?

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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 hct n.)h1w3 xljdtef5: v es1/connected in series. The equivalent capacitance of this 1ev5/w jhd1 :nxsfel th).3c tcombination 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 .zm 3vqupxt+z1fi1 mh 5gp0w8 connected in series across a 12.0-V battery. How much charge is stored in t.mz 835gum i01xzhfpptq v1+w he 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(am(s. f cgiiu-q8ps * across a 12.0-V battery. f as msg(ip8.c *u-(iqWhat is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V batta+uh xxkn-urwy e8h 2)3ymh;) ery. What is the voltage across th2 hum-+kyxr) wxa h;hu8)e3yn e 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 ac7st 9lvqba evh*2c93 sross a 3.0-V battery. What is vqs2a3c7et9h sv9b l *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 capacit romyidt )u;prj65,;wors are connected in parallel across a 24-V battery. Ho r;ju;yd, 6pt)5imrwow much energy is stored 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 and 20 mF are connected in parallel, and this pair is th9pevpwen2 o w( 6yp81cen connected in series with a 30-mF capacitor. What is the equivalent capacitance of9npc( p2ep8wyvw6 oe1 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 connected in pa qj zm3 )j*q( mg1x,hy0khtpy8k4/nmcrallel. The combination is then connected in series with a 12.0-V batpk 1qyxy,*n0z8jg) kmj/ c(q3mm4thh tery 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 connectedn3*mahy oui 4ekr+3*x in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. a3nm+oyxu 4i**3ek rh 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 ,thxwbh-:vhno c5 f)nf4sb0 2parallel. The combination is then connected in series with a 12.0-V battery and n xh o )tnw5vf:hb4f sb2h0-c,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 throh:),vb j/09hczohlj jugh 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 discharged through 8cf2ltt*mj+n9jr h izm(9gktk*5 k c5a $4.0 \times 10^{6} \; \Omega$ 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 co5xi*n70fzx b .fkt:wxp9 4o xannected 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 between xai5p0fwn .*x7x o kbx:4zf 9tt = $RC$ 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 seri,j*r* i,wqu kkyt;:zs es with a 3.j ,zst;ki,:*u w*k qry0 $M\Omega$ 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 resistanc7zg (juiyal*f r;:+(uyyv9wjy5 )pree 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 resistance of 24.0 u,a2e lyrr 1p*$\Omega$. 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 resista 67yohkc2 f. fiyz0nc5nce 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#
 
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  A galvanometer with a coil resistance of 4omjc+3 .lz 8iu0.0 $\Omega$ 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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