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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 ter b 1pmqb3, mxj0fc p)ysm*8ej3minals of a battery, when no current flows to an externa mfxp301mjb8,j pb)3csqym* el 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 terminals of a battery, when current flows)xgb1:p, qf:lw6 lc6 i*u iiti to an external circuit, is referred :i lw f1q)u:x,g*i6ic6 itl bpto 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 a 0,f0tevzruk: re connected 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 co h l6olncs0c;8,bh5xnex*qp (nnected 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. If the curiwjl9 99m.: 2qnzptctrent of 12 A flows from the battery, how much current flows through any one z92t9tlcn .j9qp miw: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 connn1zu f*ac.bi 1.kxfa/z4 eu;wected in series to a 12-V battery. What is the voltage across any one ofb.*ecui1 fa4u/x;kn.1zz awf 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 voltage source, theuw81 f*+ qd dvjau ucq3t1ck34fv o1x- power supplied by the sourcfowf4u-cu t1x18 ucdk3j+ v3q1 a*dvqe

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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 coc 9zl:ekj6 2j zkf -kr-k6tre/3ieq x2nnected 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, we can be certain tha.jqy*p / 13 znw7jhk.ujzw.vu t

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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 paral0 8h-u qnkck3llel to a 12-V battery. What is the voltage of any one of the reqn -3kcu0kl 8hsistors?

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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 battery. If the curw ljxj+v.5j z/ 3r4h/ -x0g4ctvamw.xdrl4 elrent of 12 A flows from the battery, how much current flows through any one of the resistoxe 4lc5zw4-aj4g.l xv/xd/ l.0hwjj+ rtmv3r rs?

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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 tre,k1 fh: u0qv/8 wwd9md hg:kjze lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the k,1dwkmg9/ hw:zh:f0 v q8dj uwires 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 source, the power hq j* :fj5t/d9c; bz1 edljbc7scjjq;9dj*lfhbz/:5dt b ce 7 1upplied 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 resistot,b1 oktufyt1euy6-p; w u 2)rrs, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected tf1 - r6ye t)y2;t,wokbup1uuin 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 junctiou9at)-zcs lh3n 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 rkjhrd lje6+ 16p6z 4bmqamm: zr8(7g 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 rulep,rait9a: al* /bf7al5jhkmo)4vlm5 is 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 is3 d1;ejq*skjk 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 jjyfa 3rp)/:5z am5nu,rflxd 0 df+a3 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 eci/rh icv llw7)xc604k;j6x("+" to "-" to "+" to "0cr/;7l lwkv6xe6)cixi 4jch-"), and place them in 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 seriesubeclzf 32 (b;j55qkg ("+" to "-" to "-" to "+"), and place them in a circuit, the comblj 5b32kb (zf g5;ucqeination 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 pa0 og8l5,jp lxa( ytwe6rallel, and place thep5,lt8 6o w0egy(lxja m in a 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 as5-m w mu6)u:uunmb+e re 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 capacitors are connected in 6nddn 2re 6 w(i:6xffs0xl0snseries, the equivalent capacitance of the combination increas id00frfe w n6s x26sdx6nl:(nes.

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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 ujujp9jibl pz7n 82 0+series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry? uunblp09j2+8 z7jpij

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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 c-ozyfo ,c 6gjoyggk98vn 9(4fonnected 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 trrj6 xaql3fsh2 gm sox3025 je.9ui)connected in parallel, the equivalent capacitance of the combinat5 9hs l2o36s3tjxjau qx.gerf 0i) rm2ion 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 badto 8 jaz+dcjrxy1 )15o5j2d*kc7n t:bewb:attery. If a total charge of Q flows from the battery, how much charge does each capacitowb ytd 5::x1a51d rjc nk8 a+tjjodzo*c27 eb)r 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 quantity RC?ro:o7ir*aj 3 t

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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 om3;opcrbeg0px);zf c/s*y9nb -4 gxlf constant terminal voltage. At the momen e*c-x m4rg gf0;bb s)n9c3zpl/ pyx;ot 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 connected k+.pg0i , svvbin series to an ideal battery of constant,0p+g vbiskv. terminal voltage. At the moment 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 to an ideal b36 jk ucu5 l7l(kkc q4*lu zs9f5yp/awattery of constant terminal vqsu6 /lp fak ywkluk3*c(57 54jul z9coltage. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter showl4.jp zpneeo 6c.9e7+k y3eould

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can bcsgno:o ;)ka2 e converted 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 .xor52t5qfqi circuit consisting of one resistor and one battery. As 5q.itfo 2xrq5a 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 tpv(1)lfjl;j9picvg , 8mb 7oan 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 galvanome*il2 j)ncezbbv c)bew/hmcyj n 857y25a(uw)ter, 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 resisx nq5hx ubv0g*)yc5 2atance 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 placing a voltmeter acroe:l2 z+j na,jrss a resistor. What happens to the total current flowing in the circuit as a result o :j jre2alz,n+f 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 at.kf cz;c3fd6 mmeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. . ;tf6dkcc f3zIf 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 seriey bw:h,uu9(/ dxj ot0xs 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 the value of the resistance by dividing the voltmeter reading by the am : ytbudj(hx w,uo9/0xmeter 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 4.0mtk92 9,lx fu qlv: g+v37oiyb $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and amr ,;4xdymk2 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 6.0 f ilv- dvnm 0dm;+x3ojvz13,n $\Omega$ 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 combigy z,6) gqq/pbs2 b;fcz+*t2ktp1 bor nation 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 combin6 0 eq 4k0qhp0haewk v;lx5lyf dm4z44rl,md .ation 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 of 4.0y8i. eoo/9qzcg8jxllh+ wh55 $\Omega$, 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 combioe(v9 wzgo wm2:(sz z2nation 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 ikmr4up6)be8un h hl )6nto a parallel 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 appliances are connected to a 120-V circuit: 1200-W to +8yyoknda 15baster, 650-W coffee pot, and ob5ya n8k1+dy600-W microwave. If all were operated at the same time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum ocxs, 4:n cv2onumber of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuit breax2 soc,n 4ov:cker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0wxa8 m2i2i r:)yd l6ws $\Omega$ 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 anh -)2gjsg 8jkjd 30 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10.0o0 (iah4j fbwb 6r/9aj $\Omega$ 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 ;pt t.geqqw6y6/81wk;t,y d evk p1mh9.0 $\Omega$ 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 tne1fu *)gg5xf sz3-u.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 9.09;tumihau )1 2pbsi h0 $\Omega$ 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 res58ej: *7tzb u 1hcap(vspi :hgistance of the circuit 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 throu os-7-y is-kscgh $R_2$, 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 re6x cnl ;c e1ea9 j+*dr*rh*wigsistance 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 currenmik ppzr pr:2/rn-k 51t 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 F,. jaierg8*h4yadot.0cih c:b 6 z1p wig. 19-4, determine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determ3z w(kme, 9l0 *xa;7 6n edrxshq, fwqifzr;1sine 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 oeaz iq f6jrhf 3q)*9f)f point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point j,shhvbs *8c3l-v vkyr5x-f )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 tby:dh 4m*pv ,/ql-yovrs rd8 :o 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 the battery in Fig. 19-5 k9 zddid3(9lkhn0m 09dw phy-?


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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 in0b *,7kdvpj; 3up gip(wot yg-9h slk/ 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 qfd ml3 9 g22ykxh,ot;sem0;psa x94 fin 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,g *v m t7:k.qgxjjk(c - o)pj7:fmeqx 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 iqa szlw5bu5 p 8tbv4 6g5z/gc6n 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 tm)l3*ad yssc0 he 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 tqg y(wqy1)4a;tjd(dw8gkiqid* .o4 hhe 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and loikv( e e7.;wbb/r0ht8irz0 ng +j6npcwer left corn n kbjthr+wi nzeci8pg0e .6(0vrb;7/ers?

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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 of trj/ q1d5xml)zhis )/5lrxmdq1zj combination 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, andkrx )y mf; e9bb21sbb7 50.0 mF capacitors are connected in series across a 12.0-V battery. How much charge is stored in thb smk1r7b bf9be2;)yxe 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 a , rbzunh89s**dg*rv4 nl etca.1,amtre connected in series across a 12.0-V battery. What iza1 bls,etmnta * *v.49 curg,n8rhd*s 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 battergwhd-::ip g*by. What is the voltage across the 1.0-mF capa*i:bgp hg: w-dcitor?

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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 capa hp)jy0(c euq7wk2 m-kcitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capaci-j)(0m kk2ep7chuqwytor?

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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 parallel acrossfn-31lv gl88yvmc5x v a 24-V battery. How much energy is stored in this combination when thegmv cly1xnflv58 8v3- 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 coqcf4-x+ rt76e6l-nr1;uq wxg1g- uhvhsp:vonnected in parallel, and this pair is then connect; w7h4- g1r6 6h+x-xvfltpe - q:ouqu1crgvsn ed in series with a 30-mF capacitor. What is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are rxze 71(sb:biconnected in parallel. The combination is then connected in series with bi 1:bxsz(7 rea 12.0-V battery 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 q e-b7g v o7dgcj1e;j-are connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. W7o-gbevdej 7jq; c-1 ghat 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 1d jd:r7eafen*dh22gf +f+ w dare 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 voltage across the gr+de17 j+fwad*22d:defnh f 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 throuxp1;tg2 eo4elo*cv c.gh 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 dischar0 mpsx- tr.nlv):njd; -e22 l/d uwubdged 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.y ec9i jx8;he6s/s) bc50-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 t =bs /ec jy9;eichsx6)8 $RC$ 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. .2 znkpvx v+4caou/,dh+foi c/q:r(n It is then connected in series with a 3.0 +/ x. fao/(+pck2hnuiov nvdrzq,4:c$M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance of xqdp0nb xs:8 qi * w/.8arh:so100 $\Omega$ 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 rese,g1d r/ uoe3s-,fq)0y wdpyqistance 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 inter 8 xmlwxeo28:woqf9of m:29e8yj2r l ynal 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 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 resistance of 4 np a9qt.py0,ltd q)z)0.0 $\Omega$ 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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