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习题练习:Physics Unit19: DC Circuits



 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 betw+whqok0zqq em c6 va: a ov*2a-yc9s2:een the terminals of a battery, when no current flows to an external circuit, is referred to as thev: q-oaw:* qqeo22m+9y z0acasc6v hk

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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 batt4,c hdsnfvm s.4+ ag,sery, when current flows to an external cirvn ssdmc.4h ,4g ,a+sfcuit, 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 ck4dihr, 8 o1; uxkqwn1onnected in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected tq48+m eh x*ky8:a hccin 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. Ifs( bi;dhmr76) evf nb )vi5f7u the current of 12 A flows from the battery, how much ) br; ib 75 hf(v7s6mnvi)fudecurrent 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 a-jaf-w9h;.,0 hh jto eafs pd6re connected in series to a 12-V battery. What is the voltage across any one of the t ;-0,afs-aj pj 6hfodwhe9h.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 seri, vniypcu2/p: .wh -etb jd/7ves to a constant voltage source, the power supplied by thcnwbu/ph/7v i :t ,ev2d-.yjpe 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 icbx zxf)0y51 -c l3zw de4wh3rn 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 beyey*4 usi*uc -hd-;y w 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-ug*xzg5z 1rh/V battery. What is the voltage of any one of the reg5zuhxr* z/1g 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 parx(r wk5 4tqz0pbgv;0rallel to a battery. If the current of 12 A flows from the battery, how much current flows through pxzk054br( wr vt;g0qany 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 obor( 46a c6y* xka68 txjadl;kf Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading tdjyx6k6 46krb a;oaa (*x8ctlo 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 c,nvj u1(fy*ff9 nzlq8 onstant voltage source, the power supplied bln 1vf8y,9f u*(fnq zjy 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 rescflm. *nbo(6tn2yqi 6istors, 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 in parallel with these two. tq.mf6o6n2ib* ( ycnl 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 jua/s:4b p6f 2ha-efaxknction 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 rulq,iu;jom--r ;um 4mek e.
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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 f 3pvdw cn0-b t339ttzlpo0nep+9z/eexample 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 ru4j (by6 -jwix f 96h8ia 7ixhv..binsale 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 sho9 pr1r-ctoc( awn?


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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 togethed3bwa(ycyv:* a 2q)o xr in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination w3d*)(ybca xv :aw yq2oill 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 ("+" tanqsw6i 5ig)jf,j:(to "-" to "-" to "+" ,:q(6wai)tingf s jj5), and place 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 batteries together in parallel, and pkmv x (j 9cncybzjpy4up9x8eb.+30c7lace them in a 4(n+ 809jpey.pkxu bc97zjmcy b3vxc 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 are connected in series i8 c/g4zrd q-eto 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 capaci+yj*kjke)82a;,8c b okwkgrx tors are connected in series, the equivalent capacitance of th) rbec82*+; x,jok8ykgkj wake combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in sjuy dw8 :ig+bsm uk 3b4k*vl74eries to a battery. If a total charge of Q flows from the battery, howkk 7ws8mjd i:4u*4bvy3gu+ lb much charge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected ivjyi- pxwy s,ir: *zo c6(cp:+n 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 r m ys7/elwv0n4sf/pcu15d )kparallel, the equivalent capacitance of the combination increas5 /4 nskmer)wpl01c7 dvu/ yfses.

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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 connecti4ouhjc 5iv3nx7/*q) npei/0rdgi ,9i v hl,oed in parallel to a battery. If a total charge of Q flows from the batteriu ncihvo0lrii,xedpo 73n5 , gq /9)4/jhiv*y, 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 quantity k4o: u)tpi mb zqxrrf7h,o b ;3vu q(;0klio1+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 constaxpn 4.x;dbme 6nt terminal voltage. At the moment contact is made wit4;p.x nbdxme6 h 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 capacitoro;nn1 5 mysq.kx5;iho are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, .; 5msok; ynn5q 1hioxthe 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 bafyz.t lw ey*,*ttery of constant terminal voltage. When this system reaches its steady-state, the voltage acrossfe *.lyw*tyz , 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 sho9 69:tp rflhsquld

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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 py++8+k xt6q. veudc ea

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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 i6dk- vx6umqatf. oy:4n a circuit consistin a-mvkfq:.46 ydxu6t og of one resistor and one battery. As a result,

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Decreasing the resistance of ax 764l(qgdq qz1h5lpgn 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 frbzem gutggz*xe -2.i9; h, co:om a galvanometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series regn:jzp:uh0vms 7/ 1t fsistance

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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 resistor. Wha7/m9qhlp2 fvc t happens to the total current flowing in the circuit as a result pf9l h7vc2qm /of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeungctk+,j jho19 /:odj0tmt5ter, 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 th5tm+h/90 o jk ttju,o dgnc1j:e 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 voltmeterphpug ynhl,kv1,6) 4z 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 value obtai41l6h pu y,hzkgv) p,nned

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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, anm4uylt(n4r va8 n2x:md 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, 12hh)r sszoqwx)8 o5(g9 , 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,*xx )sqpkho,6t/n0i p 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 sbzzt ;, .h,hcmeries 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 z)hwd62.jh cv series combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel cnevmv 7 5.+f+bdpi 4;9kn nthkombination 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 c-t m ;k-e.as.oog(lrju 3 kge-ombination 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 paralll7(f3: *dy,57 nw9gbzh:vs gm enrbfg a4ptg6el 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 ap (:jlsg hqvj7,s1zn)/b:oi cbpliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pis:h,/ :7g1(vqsn) zjjbl obcot, and 600-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 number of 100-W light bur 2y16i g4ppwclbs you can connect in parallel in a 120-i4g2cpwyr 61pV 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 :u:65grbke cu $\Omega$ 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 an2krp6wvrjunxa1 ,d3 5 d 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 uy265zq/ x+,8.mw - aslbu u sgui;djh10.0 $\Omega$ 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.n):/:qqxjxr s2 fg a.x0 $\Omega$ 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.ru8*p7)asjc.pbsaq 9g+f b d .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.ulbtgf e97biyq;n3 7)om8m n 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 inp 0kr ztjix3i 30tg+*9y avzl9 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 througeiu h4d.3sd(9( bist lxce5.uh $R_2$, 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 czv,+bv c6utw-u6v s q:ircuit 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(2q- sg7y o8bwb1 btfh:yy*l r the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the currentiv0b-ugi ))k/wu9d jw 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, ta3hdaj 1ij8 ( tsx+4vdetermine the current in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to poq u w/ ,hzvzwf(8 x,mczbitc1t,:1t u2int 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 potentia b 1ybgg+s v :nuz1cn1o+3,)z fygiw5fl of point B relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative mtxqwt +*l2d bi dsjl1;wls9z. 26mz -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 the battery in Fig. 1o41o wlcs*7- ht jvy.r9-5?


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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 poib+uxlj7-ug*c o+tonoz 7+ei- nt 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 w,(/rf yhizd bt)5id)the 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the u.jk a91fjc,uct6lb: 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the jgh.( *wi dy,c4 $\Omega$ 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 fy12plrt xl2dfv qc+5hkg x 1w 5b2z4312 $\Omega$ 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 thejs58.ektmqy1 j 4 5nkdqi a;,s 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 upp69+ cew1vdfnu ;kk1gz er left and lower left co+u6z1wdf enkc9v ;k1grners?

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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 co.a(ba1mcu 5v an c68wlnnected in series. The equivalent capacitance of thi1(.5c cnu 6aw mva8blas 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, and 5m/ds7pbmtn7t z( ,wk 30.0 mF capacitors are connected in series across a 12.0-V ba3ztsmn(7p,dtw/ mb7 k ttery. How much 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 conneoj q7z5 tpgo19cted in series across a 12.0-V battery. What is the potp71gq5 to9 zjoential 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 se:7juf5-q94iphs0 7hync mrcb ries across a 3.0-V battery. W h niyhp: -70b juqc5479rcmfshat is the voltage 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-mF capacitor aryd:5wo-baz0 r-vzu5pd5 mx z7 e connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capacitow yzr5-uvdb5dm-7:z z0xapo5 r?

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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,oho bi(ts7 l/ capacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the c b,7otl/(sio hapacitors 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 th ornecq+ 7n c0nir5bpt4e1k/a --fvg0is pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of the1v 4b+n 7i5p t-cnqcao k/0f-re r0gnis 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 connecm :skppc2h)7bted in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacitancep c2 kp:hmb7)s?

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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 parallsj;9px w)ty6lel. The combination is then connected )pw69; sx tjylin series 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 mF are connectedvd(kmv(;ozq c cu/v0av 1ah 7( in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the(7m/(avkvz ( d 0 qvo1ccvuha; 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 through a r4)fe/xxjf t6-l ara;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 jdsrvp;d8h 0( charged to 12 V and then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in serusjy3 :-no8 idies 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 dnyo-8 u:s3ij between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in series withrmcfc1r ht0)pu 0 d+,xht8c 9e a 3.0t h +cf1d)8reux09pccm 0htr, $M\Omega$ 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 inta+)nbsg yqn t/.ao :*hernal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resista 5deynn n,oz.lrw 03pr8:l7ctnce of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance os.3ieu1;o yokw w9b/rh ppd8hx pi:.2f 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 res1q/hr j7y :tkwlgbk*c: 0+mriistance 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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