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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 between the terminals of a bd/sf70ze6*xsl mgvbh7+1z vk attery, when no current flows to anlvf 0/dg7h keb*m 7s16xszv+z external 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 b khq/ ;w2xo:uvvwvx 95etween the terminals of a battery, when current flows to an external circuit, is referred to as x:vxo5h; q wv9v/2k wuthe

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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 serillqy 8r9j+x,xftl 3v1es 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 connecte;uj wmt:1srfok,s3x/ d 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 batter8y lr3l ;:ctciy. If the current of 12 A flows yrl:litc8;c3 from the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistorcepabdj9k1m 92 w 3*lds are connected in series to a 12-V battery. What is the voltage across any one of the resisto9 *2l 9cpamwd bkejd31rs?

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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 n53xckxw*w6z6a2 ma dsource, the power supplie3ckxw6w*zma265 dnax d 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 connlgsor w6g05l1v/a m 6kected 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 canb;n ee26bzgam 5w5,qb 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 resistok0r3fovs5k o4n ler m5ym 2.o.rs are connected in parallel to a 12-V battery. What is the voltage of any one of the resistorso45 k5ryso3vf20 o.en lmk.r m?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resish,b - baz.xtg7-jwu p3 sv0ig,tors are connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the res0s,zaxwu,-gt i3j gbh7pv.b- istors?

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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 strinf;n:n. h 82nvrhj/id ug of Christmas tree lights are connected in parallel. What happens if one lamp bu j;r. 2dhnvi /:nfh8nurns 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 parallel to a constant volta p ifblq;.*be)k4/xohge source, the power supplied by ). hbikl b*4pe/; ofxqthe source

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three ident 8crdz uj5v7dtt/5n u;ical resistors, each of resistance R. The maximum power each ca5 ;8cz /uj5n rtdudvt7n 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 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 junction rulef:eb x-t+v1f .p0 wrfm.
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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 xs5a hm/w;rr,rule.
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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's loop rule /ez4k xve-ilx +xbu/ 37yyj2wis 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 re o 0: r)0qvfx7na f /zn80o3m2otozihule 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 fo mbljkuq *u9ehsf)qgu,70j 4+ r 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 identical storage batteries together in servur 2/c7yif,u ies ("+" to "-" to "+" to "-"), and place them in a fcu7rvi,2 /uy 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 series ("+"r /3jr6m vd t2,3nrg ofd/gjko(rew.4 to "-" to "-" to "+"), and place them in a circuit, the cd3ng grr/ .v r2w(t4r,o k3oedfj6m/jombination 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: amzo,nw6p 4e storage batteries together in parallel, and place them in a circuit, thwpz 4oa:mn, 6ee 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 capacsdz(lr x6xmc ku:)+r73 ,qmw titors 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 co (c01*,y;09u ee6l xvn a m2otunctdxtnnected in series, the equivalent capacitance of the combinatdt ae,t*xm6 c9n;cy (1 l20 0entuxuovion 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 series to a battery. 95:g7ux v-43zhnw ok,caeys d If a total charge of Q flows from the ew5 kxsnzug,y94 o7vc:a3h-d battery, how 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 in parallel to a dyeei-4o2,w ho/hi(g 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 equivalent capaxr7-mibzw7jj ad 8/-wcitance of the combination i ibwwaj7-d rz/8-xm7jncreases.

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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 batteryn:5ism acj /*zd w+plp2;-qbl3*b sv9nh-r gf. If a total char -p2q gm5jdar+/bz*lswfbin c*hpsv;:93- lnge of Q flows from the battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quant w .+y/g)u+84wcyewaw uk+rfxity 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 69m -a7l c- c:is3bzzc kgqs7rideal battery of constant terminal voltage. At the moment contact is made with the battery k ciqg:ma zb 6zr-c73cs9ls7-, 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 connectedullpw r:wx;9 3)jp8 pn in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor isj9l38l xrw up nwp:;)p

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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 ofqte * 7zuny05(h zoz.u constant terminal voltage. When this system reach7n0zyzq( .z ohe t5*uues 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 shoq6j:h zusnj)l+d ,7bauld

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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 at,v g-iqi29v tl tx*;tmmeter 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 placz3fil-*a 7p6f:ug ha qj(n9vyxq7h)ybm5u ) uing an ammeter in a circuit consis m6uq*qjh y5v)xu ln fpif b:z7guy9a3ah-)(7ting 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 an ammetlzkfaa0q +c 7 b1bw,qi n)6gs0er'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 x 9qfv,qj*yik wx39d7 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 voltp 0wnv i3oa/4+h2m mqrm;*plumeter'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 obtain/d8 x:t 1om2sp. rwftled by placing a voltmeter across a resistor. What happens to the total current flowi1f:mt 2r/ xo8stwd .plng 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 series with an ammeter, and a voltmeter ienf hbgda1 15;s 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 by5;a1 he1nf gdb 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 wi+o 8szmu-hg4mf a hk69;gk+kx red 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 the value of the rgkxs+-hg;9 f6+ 8kkhzm 4 mauoesistance 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,kvbhw;3axa p;m)w d )/ 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, 12, and 6.0(ihwc xnv x98ba,xw5;i7rkf 1 $\Omega$ 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, an d-99qoo sj2 *fvodddk uc 1,f+*t3e5b:iqatfd 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 combie2 kdpv)i* jn: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 combqy laa-f: /k tf 8p(narjefs4./, i 4u;qlo5ibination 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 iso 8uyk.dzxq61c+ b ;cnto 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 combination oft 7dqe,:ryj2d43xfsx5 eb *kx a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 6.0 $\Omega$ resistor?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination ml508vs2soa eof 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: 120 dmg 9 61mapjzakm8e600-W toaster, 650-W coffee pot,6j6ka981e m da gmpm0z 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 bulbs you can connect in para*lc +syp/jcok5:3bt i llel in a 120-V circuit without tripping a 20-A circuit brealstj pi5 k:y/+cbo 3c*ker?

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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 nv/dgvil.. k i:bv;4c 0iegq 0$\Omega$ 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 30b0a;9rz x kqu; $\Omega$ 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 10.0h8h 8hb(7pyn9c bnz koc)* rl1 $\Omega$ 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 5.0iqq.p3oo )4z6*i adqrxlh*4c 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 +o d mftdu+6 yui43eg/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 and 9.0a4 5tjl truu.3 74cxoeu5qba1 $\Omega$ 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 cir o2zfz93h2sy6jx /pkggz b.b-6/rp rj2f6fy pcuit 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 l 55c hrbe+v.t$R_2$, 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 resistanctq dl7 (rgz yvq)p6;c,e 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 in5 g7bcie(cilnll)b24p, q tg: 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. a+o)v8kosj04 m. i;jo z+mmks 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, determine the currenegcz8j(* b se)o8so rb 9:)qket 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 point C ixaskyob5j)o4k(*8 hv n 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 t 8y7ec chvvqr, ek)s0lx/y5, 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 poin78rjs1ms )qsllyf )c e6uh:/yt 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 ieyqmh+* k b3-6s06mmhqfvu y3n Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drox+xpmjx8re ; ,41a bg lu9v.q k7k)umop from 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 currenco .;r++ymx 1fagqk:t.a dyi *t in 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 8 d2bi/p4f0be e $\Omega$ 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 stpq lvhk/j+r6r5 2a4ei,p0n 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 o 3m/jfh)f4 ks zuw-q;(ur.as 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 inq 2:swq pwo8oli4a94fp5 ys, i the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left andl9xpo o;ike3 98izcsv)nk:x;(i dyp( lower left cor(x8 led;x;icpzv9y iko:p3( )koi9 snners?

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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 th gbql,h79bi: gis combination b,9 lgh7qi bg: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 capaci5z0/yuloe *4qqt-2 1 *mo/ 1 uahexgpde aw9ehtors are connected in series across a 12.0-V battery. How much*ee 2/oaq-te/ x9zm d l1p0owe4yuh1qug5ha* 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.yt1 lglf s,(x*4c wod90 mF capacitors are connected in series across a 12.0-V battery. What is the potential difference across the 10.0-mF capacitor(1ltc so, df*9yw4g lx?

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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 tm:p5 - bx)zv ghq+p 7 n7blr2(s/zkbea 3.0-V battery. What is the volta/q )nvz72zph-bt7 :mg lkpb b(e+xsr5 ge 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 capacit5h 9,fi n,x exaa /nw7x+d,mxtor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capaci5 xnxidx7f ,thm/e 9wn,+aa ,xtor?

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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 capacitk27iko.zf + ifors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitif2. +fio7kkz ors 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 tl ec3p/pjd(q1dtk,.u/ 2ihnn his pair is then connected in series with a 30-mF capacitor. Wh d1qkiu,j(l 3 /den./2c nhtppat 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 connected in parallel. The co6 0g vofa4ncvcango hb* /:9m:mbination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalentmgo4 ng6 va 9ho* 0cbc:nf:/av capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in para12s1:ofzk vbvzc +j3n llel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What 2vf v3 okzzjs+: 1nb1cis 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 podg8n k2r: vy+df j(e1arallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage arv d jo8:f+(dng ky21ecross 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 ty gsuku *d0jq4/8vv6 fhrough 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 4u -v8yaf 4iiypq, whtt3w*p* a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. The./u nen*up;oim sa a k5:bx:6s capacitor is initially uncharged. The RC combination is chargem b sp5e6k.sx au;*a/nouin::d by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0- *j)gr ewcu0ktl/t 9oa8:xed,V. It is then connected in series with a 3. t ja0cg)/te8 :d e,u9rkxlo*w0 $M\Omega$ 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 res9 yhtk3rq zc7)istance 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 ap+ 3+8ojikj30c*ld maqz 1ege 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 anv;fdoj*k28o ha4ym : k internal 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 coilfr0 tvll4lv0k8 pk, *o resistance 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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