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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 battery, when no current azu f6o tjcphlq (r-+5a5a;o8flows to an external circuit, is refer(u65j;zo +5ato8lpf aq ch- arred 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 differe wt9d;wmc1eb7 nce between the terminals of a battery, when current flows to an external circuit, is referred t m ;19wwe7ctbdo 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 series to a battery8x- d;lrt*9ckw1yy9ra qyw0s

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connlii6xwinrm p.6s p-4k6m/w q0ected 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. Ibwlyty 64e/h1,*5k1oww 2dx9j xvdwbf the current of 12 A flows from the battery, ej/wk51* tyw9d6yh,bxoxl w24wd b1 vhow 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 resistors are connected in sqzs 2j/g j*r/beries to a 12-V battery. What is the voltage across any one * jgjr2bzs/q/of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, the b3bh+azx/5h+le*ca8awwq0 s power supplied bb a0hw8bxl +a* we3z+ /acs5qhy 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 6-kd;rsxha:cf+hhh .k( i h w+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 /ktr b1f6+wri 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 coneztujxjf) c( 9.q/q t*nected in parallel to a 12-V battery. What is the voltage of any qextcqz*)j/uf( t .9jone of the resistors?

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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 b7x/ymly 7hgi 6attery. If the current of 12 A flows from the battery, how much current flows throuilyg/m7x6y h7gh any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree ligh,r*vfjvtmh+4z ki118xv,o o ats are connected in parallel. What happens if one lamp burns ouh*81oa1j v ,v,xk+o fmritvz 4t? (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 vrm6rv5 - 7 uqkf4bq(twoltage source, the power supplied byrquk v ( bq467-frmt5w 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 resistansh nuz.8.o z/:nuegx.ce R. The maximum power each can dissipate is P..sxz8u :ou.nz/ neh g. 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 junci:kp xf53 f wvqvzhjyv.8 6x-)tion 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 rule 08-gm20v tbx*dhwirx .
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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 ac s-+6cksr rxhju,n:: n 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 is an examplt)bfff*d81 t ke 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 circu4jn9p3dch (f9za 2 5gj zxn :sc2a.rmwit 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 ("+" dy;6 hhdo u(ob,5/jzato "-" to "+" to "-"), and place th,db5;6 ayh/dhu (o zjoem 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 identico; t06nfv9nrn aju)x6 oed :,(7 cbgkxal storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combinatiockun)e 7b n:ooxja 0xfdv ,6t r9(;n6gn 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 togethe,dd1bl uape/3 r in parallel, and place them in a e / ud,l1d3pbacircuit, 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 to /sisrhm1 6v z*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 .s f)bljfk e 49fwji/l yc//;iare connected in series, the equivalent capacitance of the combinat/fc y4si/ebjkf;. ji9l/f)w lion 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. If a qdey2,f n+lan mo)z3,total charge of Q flows frome)f2n,o 3 d+m,a lqnzy the 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 capacitorsfy cy87ekebv/2- , trexl+5ogp4sb 3r are connected in parallel to a battery,

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more and more capacitorsyt 6x6vo c+oi.q :np4g are connected in parallel, the equivalent capacitance of the combip yivqog.6 ncox4+t:6nation 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 bawq6 oem4vsw8q6il g564 oy a+httery. If a total charge of Q flows from the battery, how much charge does each capacitor c6oamy 8gwqol q+h64 w eiv5s64arry?

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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 / :n0bgnsy/4sja1g-ep0jk lg quantity 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 connecte*6eqzd:7ipc6 cdw8cj8t7pgu d in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrosz:c7w*g8c66qtj c78d pi edpus 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 co;sojsf++5g*tb s3 gronnected in series to an ideal battery of constant terminal voltage. At the moment contact is jssb+fg5r+goot * s;3 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 / c7l0ivzfb k1ideal battery of constant terminal voltage. When this system reaches its steady-710cbizlf k v/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 showzh) 4,du awub,6:( 5yqblwlmuld

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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 9 ta ljtc:bu,./qmg h)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 obta14vjurad31 l* vtxyx7 ined by properly placing an ammeter in a circuit consisting of one resistor andu xldv*v7yjax4t311 r 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 ammeter's shunt 6243zcsr8qyaw cic f8 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 f+ol tfp8ljc9 ev-w ++yrom 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'sqykl*) +5gj bc5wywq: 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 acrossvl1+ zt2.mn. 0:gne9ifnu z hq a resistor. What happens to the total current flnv i+ :.gnnet0z1.9z2u qf hlmowing 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 ser1xr6i3 0b: la; rgq m/mfmg;(bzbs,qvies with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, tb l1b(;zm v: b rmirxq; a/06mggs,fq3he 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 anj+hacdz3e( :.ekj(q j ammeter, and a voltmeter is placed in parallel across the resistor only. This network is th+ej:3e.a(z j(kqhdcj en 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, and -djaet q mf( 7smc(.t):jmz;x4.0 $\Omega$ 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, :i m7:wbi fbn,(fyc ,e12, and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, and 6.0kx.c6s1j4p17 mxgl xm $\Omega$ 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 combinationc3,*(gty ws7 r zmff:i 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 combinations5v3pgys9z;f aw6m 2a 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 prw c;sac8o g:4zrpzq5 va,1q 5arallel 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 of a 4qj9ci0s v s717em2c lc.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 p5fyw8mhu 0: 5 (gis b9/ylosusds6f -carallel 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 toast1ps p1 l(ts z6je5n dhws3or-:f4x5raer, 650-W coffee pot, and 600-W microwave. If all were operated apej(165 ld3s:r z1npafs s4oh5xr-twt 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 parallel.alfoir( , lj7 in a 120-V ci7rll ai j.of,(rcuit 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 2.09eo h5u+*f04 yamwel h $\Omega$ 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 30 od0ri/b ;an/9g3l (zp goocjm)u rj):dy y2k7 $\Omega$ 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.vvf0w.nr5dd pisw8) , 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./l mlvn8(3h 2g d8huf.9dkga ojp,qpe,w2v1s0 $\Omega$ 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 9.0c oee,/ -r2wz ioa0)g4aebc8 dbh,r +k $\Omega$ 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 jhl 7zb.aj,g:lo ;u.e9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 1jhn9v v 5: ern0,,bhbl9-2?


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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+jv n avb o3h9q)b8jnqo/0ywvc+:;k g $R_2$, 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 circuit in Fig. m0jbz*nhzv/m5 ;o,f n19-3?


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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 currentgs aziguqw 7h.p3jv9ab./. 7t 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.e,)a+tf5ialtztqw76o ,fg e mbe6:.m 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 cub7 g1i,unm s4(:fvpv q5zjv k(rrent 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 po-uqom ,p +ef,ywg: aj0u+*vehint 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 ba f*yz 7d )/s.puamu0relative 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 C .lbjtstan *:,r6a i:nin 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 batterynar+ewrju9v q8 ha-n3c z8p47 in 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 drop from point A to point B in Fig. 19-qmz 0e19dgsbh5day r1zy0 (lh:w/f .p5?


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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 th/:3-rogz4kxup yfumag(p 17: l sa sc:e 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 in6uch r h6g:c:kji5: hl 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 currentyk6kkr/0,dtb 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 j-k4nt+p-vg0dmziak ( 5vzv- 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 18 4oas, ge :peh/5t+mcf $\Omega$ 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 lower l4b y :patlyka27hlo;:8. v bofeft corners?p l72 f:boyyl8k.ob a :a4vh;t

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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 connp 1 *t yst-xpv6d4i: od e(0cwmnzdc85cbv-,mected in series. The equivalent capacitance of this combin5 pmwp*n8:s mxtbie, 4y-cot0 6d1(cv- zdcdvation 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 capac 04b6mm3cmaody pofc,ix*0 8h dd/ -ikitors are connected in series across a 12.0-V bati0 fi*hyo co0 dc4db8mkdam6 3x,/ m-ptery. 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 capacitotie p1dx2fezpl5n 150u78y isrs are connected in series across a 12.0-V battery. What is the potential difference acrossle5 z1 7u0i82t dfyexpp5is1n 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 connectesvq.sm0lc) c6 d in series across a 3.0-V battery. What is the voltage across the 1.0-mF capacit0qm.)lcsv 6scor?

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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 acr9 um3awm:e hy1oss a 3.0-V battery. 1m aem39:uyhwWhat is the voltage across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in parallel ace6yf ysm9n(o*x8t j6iross a 24-V battery. How much energy is stored fy(9 io etxsj*68m y6nin this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and this pairpj;uix ym 4nyx n1106f is then connected in series with a 30-mF capa10fun y4xyix1n;6p jmcitor. 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 6.0xb ynd uiouc1,/0/ 3sgcok;+r 0 mF and 8.00 mF are connected in parallel. The combination is then connectegci0; o1bckso3/+, u dxy/nu rd in series with a 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 are connected in parallel. T:dtq,x e e8yatlu3qj.a5b/ +k he combination is then connected in se dea8q btltjk3q.ae,:+5 ux/yries 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 connect9rdno;x i*lr 3q4xj 9ned in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voil4*ndjrx3q99 n; orxltage 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 thrql+b wb0e4 qsy43 hnn8ough 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 thron,3 hqin1 sa+ soxkk;spp47q3rxo ;p(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 1j q t7xp7spw;a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V bat1 ps7pw ;x7jqttery. 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-V. It is then connect*l9ezothw : wf : miv/q/2,ztzed in series with a 3.0 w9zol/ *tzzm tq:/if, e2v hw:$M\Omega$ 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 intern3 (rg,cpxzobyt)0h c9 al 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 coi)8r9h96 orh*9d gzq xh o+7e:rifh abdl with 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 inte bkug3 ky4i )w9lxs;3zrnal 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 a9) u2b lffr1i9;rdqp w coil 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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