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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 of a battery, when no curio.pf lc fo,z(77hn yy1yl8: rrent flows to an external circuit, is referred tol :ry7fyihz ,c8f (yol7o1p.n 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 betwee2zm1-swlc k99m ub9,(ov7bx ry gfk3hn the terminals of a battery, when current flows to an external circuit, is-y2cu , wbs979kz formkm3 g1lhv9 b(x 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 seriexiu8kitb ,e1 93v;jx,nbv3mwulqk( ,s 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 connemat y8w,7q,b tcted 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 curikqpq9:u,;.nmb p(d erent of 12 A flows from the battery, how much current flows through any one of theeunm(9i,b: .kqpd q;p 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 conhba kgw0c +a6xg x3t-;nected in series to a 12-V battery. What is the voltage across any one oaxa-wg0g t; b+ x3khc6f 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 addf47htsr ,t+ed ed in series to a constant voltage source, the power suppli+ tsh7f, tr4deed by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in par;xps 6/wu al/dallel 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 3lu .zc0mzw,ac 9ypf0in 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 toxndyt8 w7i5val* 4d ,4 c/oxxmy4u9wp a 12-V battery. What is the voltage of any one of the resistors9dnv4d4cywm58axx*y to ux/4wpi l,7?

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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. 6;j7nyqpgh)x x8+puh*c m i r4If the current of 12 A flows from the battery, how much current flows through u8h 4pjpq6my7cg)*xr+i xn;h 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 Christ5 y jy+vpgl9d,,toc 9fmas tree lights are connected in parallel. What happens if one lamp burns out? (d,gy9c,+5tfolp yv j 9Assume 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 addedz7zwx d of/ -*2csyrp. in parallel to a constant voltage source, the power sup *p-o2c.z z7wfx ysr/dplied 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 of resistance R. The maximum pozp 8b)cm7fp5l wer 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 maximum zpm)lp7 fbc85power 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 ruzrhku6a x- aj 73f0l *qbu,3b.dmou;t 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 rulj6;5tfv1vzyzf2*osezopl lt l( /h )2e.
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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 exgkpul/9 1 t7*l8pjmvoample 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 * a86q: uvlq3tke8lbn 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 lju yg.b-02oa for the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical2*d ufea2 rb mc5pd fh+.za+esvp1w) )i)g (bn storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, th)2*z2s5(phfw uvdm i e+a) bd+gan).cfb1erp e 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 identic3e yaqx.ib1v,th l) e.( mkrbn3 mq1w7al storage batteries together in series ("+" to "-" to "-" to "+"), and plac)t .. i1era qhbxb(w3l ,mve1qkn37m ye them in a circuit, 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 b q7.)jouoxctjq mx -g,s4 jj4*atteries together in parallel, and place them in a circuit, the combuj)qcx7-t*qo 4, j g.s xjjm4oination 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 capacipa 5 eap*g+ox)9(svdltors are 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 s(x 4fc5: i auluc os*y zfyhk,j/:v*v7eries, the equivalent capacitance of the combination increafvz:x l5(acvois*yuc*/ :j7 h,4fkyuses.

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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 series to a battery. : u)zpssl *8/cir0sxq9 2uavq If a total charge of Q flows from the battery, how much charge does each capacitor cazua i *: ss8qclvs)/xpq0r 92urry?

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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 con zsw6 /(r fxkt*g*sg,/x7sgm anected 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 v/n tdlq( /py-z.a2jd in parallel, the equivalent capacitance of the combination inc2z/.qa pldv-dyjt (n/reases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a battery.h9ebmmr23oxc1pcbj 9cai 819 If a total charge of Q flows from the battery, how much charbi ccaxcm891mhob93r1ej9p2 ge 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 quantithsywz)8 r 0y5 pye6od5 l;)vqcy 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 capacitosal-w)oil )x5qxun5:r72f+ ta ic +rkr are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acro5aila2 - n)wi)7+fo:k ucrlrxts+q5x ss 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 capacu0z dfrm tg pte52)q.6itor are connected in series to an ideal battery of constant terminal voltage. At the momzr2ptu5 qf)t60em gd.ent 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 battery i oe, o;;l3ni11g3d*fcewzll. *ebk v of constant terminal voltage. When this system reaches its steady-state, the voltage across the k,lwibl*3 eef3*ovln;i z1cdo.g1e; 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 shout/kx 9c1ww3v .ey;waa ld

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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 al gb2avl2xfb8n4 hvs+cb01 2g n 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)sj8)eilx s-v circuit consisting of one resistor and one b-))jsv 8ilxe sattery. 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 sh/wemxe a23og hd9e+ y;unt 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 normr /,4co2 5u fuumv0qzoy 6cz8wally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resista9p j hv/)l632la z jl4pmu/yv )zo4fztnce 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 across a resyr/ yjpa-ieio8 (.:fxistor. What happens to the total current fi:y i-/ ayr.(jp oe8fxlowing 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 sej 4.aynvvgyj;k o5fqzy,s .+ 2ries with an ammeter, and a voltmeter is placed ikyy+vnq4oyv zj, s.2jf; 5ga .n 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 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, an,oxl8p;b dp:z d a voltmeter is placed in parallel across the resistor only. This nelz:bp; 8, dpoxtwork is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, y rwbgk ww3h+v(:n+.mand 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, vt5a u tnrs66ral0 8rsy y9r7t0g21it12, 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 12,2ie 4ti6k;uhc 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 combina2;q29wx4*zff8,z rid ztr1z gw2ygl8 hd4mcjtion 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 seri-c.nc)af2ag wqwsv:1rhq8x)es 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 int 4wlcivz2j 4,no 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 azhg0 y*u,) )1 x kfvlk:yrh+mw 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 combinatigf f je/9vv0k1on 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 appliay jm3q1nv*j a t;u)0e3e1w pqences 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 q)1etmjq;npj0e3 *vau ye w13current 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 bul 7) 0fjrjdgj.jbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuit jfd.0j)jg jr7breaker?

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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 /1 y:*ah*dsi4du,-oi(we oh hth iip -$\Omega$ 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 30wv w*ek4)g7vq $\Omega$ 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.hgk( , ont:(,cdb,nvc0, and 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9.0rc 92o i,bpq j3nmlp702-iugi $\Omega$ 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 wwf*nwcp: f9ya7o9l8b 5le 9p 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 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 5/p5a .gmza qtp.:adpfu2, vvand 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 the1izizp+c9fa.jd*t3 j 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 through v myegvc 6 1n6mhk*i:9$R_2$, 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 t,ibs h4b:+f,xl /mzrer82yrs:nxb4.l(p uanhe 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. 19u/l*3mf+ r sbbd0 q9ef-4, determine 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, deter pyqx5 /v :dlvc3-xwz)mine 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. 1: yv f yf ,hf)yi6(oun6.-z7wr f5uraq9-4, 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 potential0.sujy 0 ruw2ma**c cg of 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 q 9ltmad.4qj- 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 4+ ic eod8wgoy(jbhq;(f2n:px vsgx -0z2ly8 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- 5r .dcfz/k+wpt3+qwu 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 x k0y 62apzhw4(wmdx(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 tvby2e3 q uhar/hr--k6he 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 ino,jiru7w; ame96zi x6ksxie; l0h( y6 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 currenk,g o2k 3in+2odhhlh+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 the 12 lx99qaxb)vh5 nl( h;m $\Omega$ 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 inq*-sa)srm- l y 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 2rtd-2p 68eprkkwx9 ;ie0jtlwvg 7e )the upper left and lower left corners?;-plpx8et7 re0rwe 9)k2j digw2 kt6v

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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 s)2y f. kt4nb i+1bdtmferies. The equivalent capacitance of this combinatiok tf1 ny4m2itdb f).+bn is

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across a 12.0-Vh+3sn1ekyj+5 7m xs(,iv+bmwqyk:ai, jw l5 n battery. How much charge is js,y5 wk+mkv 1y+q:3hnl,jsia7wex+ (m n 5bistored 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 across a 12.0-Vu al5yhlb9pbc ;ozr 5--ui4 k0 battery. What is the potential difference across the 10.0-mF capa0yb 5zhik95culp ;-bo r4u- lacitor?

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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 conne 2j1 +(oa utmw6s4crhtcted in series across a 3.0-V battery. What is the voltage across the 1.0tawtcor6+ m4 (u1 h2js-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 across a 3.0zt k/e.;-qngt-V battery. What isntkq eg;tz-./ 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 xsx m4;fcvlkxw8mw0*k i/(k8mF capacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capa sm lkv*mxwk8xfkcw(i ;80x4/citors 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 paralj1 4jjh xr;29zhks d2alel, and this pair is then connected in series w 4jad; k2xrhj2sh19j zith 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 a, dh tz; jg-,lo)iv9gyk/ycd;nd 8.00 mF are connected in parallel. The combination is then connected in series with a 1jggi9z;/th l)y-, ;kdy ovd,c2.0-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 are connecte9t3 ou t;ux8srd in parallel. The combination is then connected in seriesu s8r3xto 9u;t with a 12.0-V battery and a 14.0-mF capacitor. 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 )xn 8x9s (xmi)b ruqu.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 voltage acro( .nqrs8))xxu u ixmb9ss 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 thr b 6s(-+y4rsk zpkrt8sough 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 throxe-ycb,prn7p li.5 u +ugh 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 cap6yu4uv qk d,1uacitor. The capacitor is initially u,4uuyvq6dk1 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 charge5og- ,hq fq z.:agv1vbd to 6.0-V. It is then connected in series with a 3.0 q-v qgo.:,z g5vbaf1h $M\Omega$ 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 100w ,2yrai;gu cupwy4+:p,ylq7 $\Omega$ 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 wius2+kwuy v2w w +0hly/th 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 inter2e( wrdlc:cws j:xob qv7v1* -nal 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 40w;w khkhj-e . w:2ri-f.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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