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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 f l * q+mg7y-dnot,mfnoc-f/:the terminals of a battery, when no current flows to an external circuit, is referred to +gdm :fcomq-- ,f/o ynt7nl*f as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the t(jz1*wu0da r lk; haj)fsi7/cjdo vb 1g);gz2erminals of a battery, when current flows to an externaika0od72as;zj/ 1cjlzrw(;) 1gugfhj) *vb d l circuit, 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 resist5 *v9mvph2af5ep;y kgx6 8xy12ynn n; lo*h tzors are connected in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in serite9 1y wri ponsf*-t- ve tf*)w11l)nkes,

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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 connectediu+ i96pzqg mx;l o9j(u;9gbe 8ln,hm in series to a battery. If the current of 12 A flows from the battery, how much cue ,68pu;n zg(u+j i 9hgmmio ;9ql9lxbrrent 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 se4p5q)xgo2wpnbgzb; wzuzftt (5/w+,o) c cn1ries to a 12-V battery. What is the volt( 5g 5nt 2zzxpwobo )) z4qbwtpn1w+cc,ufg;/age across any one 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 adde7bc6e5ittqbmg p 8,8 ad in series to a constant voltage source, the power supplied by the s56 8qbbt8catm,g i pe7ource

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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 parallel tozz34ey c2py7o*m9 :qr2mjq zv *,gbhj 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 patvdz u4i;00fota yfl;6 x0r0arallel, 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 to o1gjihn3/y3wf(itp:p cz., n a 12-V battery. What is the voltage of any one of,i jt/(yp1 :pw3 g.nicfn3hoz 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- 59ctkji6.jvclet,y1rw 9 rg parallel to a battery. If the current of 12 A flows from the battery, how much current flows throug9e1ry tgj.krl-jw6i 95ct, cv 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 Christmas tree lights are connecw83q: 7dvu kqvk mh4dsuv)/7zted in parallel. What happens if one lamp burns vhvmqu7dk/qdu4k 3v:z) w s78out? (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 fm0fbf3n 2yk(mu q9v4 added in parallel to a constant voltage source, the power supplied by(uk2 f4vmqynfmf09b 3 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 3 0m3lun a.et++pp fahR. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is con hau33at.en+flpm+0p nected 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 rurf.uo qm;u-.e ys9(ople.
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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 rulejqnk ,i:0l)a c/a oa(*z 0nton.
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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 examtu m co44np ,y+bj-z-wple 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-3.x(;7kiq pj 2 0c*jkufmr ah maen4u 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 equatio7m)n9k p/y t 3u cwb 3iawxvbau736xs0ns here is valid 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 identical storage batteries together in slc6bp1lz9 nn4-jo n kugq -e7;2;kalzeries ("+" to "-" to "+" to "-"), and pk pz;ng9 a;4-llk1l enjn76o -qbuz2clace them in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in series ("+" to w- u4f ijui7xb5bpuw16 qk4u2 "-" to "-" to "+"), and place them in a circuit, the co7q 4 f upxjiwu5u2 4ki6u1bbw-mbination 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 e5 *bsn.tthl4 place the*nths el54b. tm in a circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in serie9-yo g 5o3twii sp(n8hs 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 capacitorsr4 rw6 rg6ql ajl7j0c z6vf..olfe n,60qv)nq are connected in series, the equivalent capacitance of the combination increasn606w f6j r.vqf,g ocqanlv704lzr .l re)qj6es.

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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 odvj0k5a 3dx7f,ysp 4a total charge of Q flows from the battery, how much charge does vs,jd7dx p504y af ko3each 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 capaciojr2 :pvms6w1 tors 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 capacitors are connected in parallel, t agx2j(oz1de1he equivalent capacitance of the co d aze(1og1xj2mbination 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 battery. If a totalz5g4qkqa4k4 + ibhta62jlu )d c4b4kizgk 5)l+ 2qda qht 6ja4uharge 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 th6hhw0 kn;nsrd v -p2o*e 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 connected in series to an ideal battery of con*s4wf )2we jeiaj0wfmsqxdv71 1x: (ystant terminal voltage. At the moment contact is made with the battery, the voltage across th)q7ev ey *dwfsw1i:x 4s0 1w(m2ajjxfe 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 ar jmydz.g5rq* +g )rai*e connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the vy *rq)gjg *iz5. +ramdoltage 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 -r efm qz-c w:w5mb/,kbattery of constant terminal voltage. When this system reacmcwzwe -k:r-fm bq 5,/hes 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 shoul8 la qwt)z: 6l-c4wusfd

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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 ammekw -r o t,6mufuo/l:b1ter 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 circuittgf4hm5x;*q a sf5jjn*rue (/ consisting of one resistor and one batt j4m h*s/ 5 farqx*j5tfu(;ngeery. 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 resistanc+ r wvonbpc-y;9d*j. ee

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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 galvano3r df33p juxgy p96ku*meter, 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 resist3bnjs5 ykheu3a9cg ibzy2(+ / ance 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 y-e,(tvh q 3 kcu8n1.m;iq m uy+p+groacross a resistor. What happens to the total current flowing in qhe y.n8 k;,tomrc1+m+u- p(qg3iyv uthe 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 is plackd/7;ya mvu+f .x4nq)7eheh le wy8/red 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 veyh+ n/f;).r 78 d 4k7eam qvlhwxuy/eoltmeter 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, andtvpa ;72:, w8vdkyh rw a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammet8 vr y :tpw7dak,w;h2ver reading, the value obtained

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

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0, and 4.0 gxac n8/.tg)t $\Omega$ 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, ant6bx))dgb zz4mvy zzy (+;v x;d 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, vzqp - vxytz6a(rc 9h1p:rb,. 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 combinar t6 v2cg8yxml1h4mt/tion 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 combination uau9 2txcjmon4nl8r91 pq67i 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 comy7,f;3o/pv mpnp (g xrbination 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 pzlq1n* ub.f/cb:3ldje6dh/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 combination 2wa k9 3jwvu,dof 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-l;2:-+g 1wem lpv-efgwtvh*k V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current;e:-+ vmvwplg2k*-fwt g1 leh 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 is)k-kk slj1 :gi 9j;ege.j7t100-W light bulbs you can connect in parallel in a 120-V circuit withoukse :7gtkki e9.g jlj ;-ji1s)t 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 +t, h*t(gd4pozh ngj jy-uk-*$\Omega$ 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 andw pak:)g2 1t)m,1 ynic jwg5md 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,/,te(:w nwp,adrl1j 4v8a shc 6.0, 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 /roh 6nc /pjf h3 gnjax4bcdg0x)u:yw4(t 3k29.0 $\Omega$ 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 5.0inuw1r+bqyi e- ( lm9* 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 9.6/w7hp r / ieti;dr5eme)(vgr 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. 0g9 (gpj 5 k:zixuwfg419-2?


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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 througtj/mj g3*j/c ih $R_2$, 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 resista5yup7 idqx)3wnce 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 td9/k8df0f1 x dbfx-qr he 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, determinejr6zya pv,(sdrm* 7 xm/;0 tkd/yw5;g z ,omsp 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, i2dmzs/n ux7,(3yu i,jnh+ bp 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 potential of point A rel w1f g(q3vwd2aative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to pcl6(s:ek 3 7wiyakk,koint 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 j ym8 b*4wqi4*um6szspoint D relative 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 iaz8:74ekl1mpr i( lt)1io fu n4gzex3n 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 Fn wl;pn 18o6db2:qxekig. 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 vgomr: qu 02(mthe 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 8axuq9xf zg17 y9ggix08 :bv5 h $\Omega$ 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 i bd)c jmrimz 49z,l2c /x zl(t6gr)j7dn 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 12otcy/ szjnqi16 2aew0;0e (ud $\Omega$ 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 1e:tl wgm2 .,be8 $\Omega$ 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 soltrqz p e3.ya8ok( 4 r,99ghshmid wire connecting the upper left and lower left co8r4kgmze9tr,oh(qy 3. 9pahsrners?

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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 connec.zw sy+hznx7hp/jqt / h(a32cted in series. The equivalent capacitance of this combination iqhyhh/2 xzszcwt3 n+j7. p(/ as

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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 capacit7-vxkma da8 ;xors are connected in series across a 12.0-V battery. How much charge is sto7-m a8 vxad;kxred 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 connectedom x(twg-,6c*38sbkjj dd lg)brr8: k in series across a 12.0-V battery. What is the potential difference across the 10.0-mF c8-b) gj c*od(rlk3x tsm wkrg6:b, j8dapacitor?

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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 capacvq5)jwmctwc02 xk pty/k; fpu f9)i;:itor are connected in series across a 3.0-V battery. What is the voltagj t)t;; wf9puwk520)p q f/yx iccm:vke 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 are connected in series across a 3.hv5l g x2c0tk70-V battery. What is the voltage acrokvch7txl2g 0 5ss 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 across a 24-V ba bo2j7z93 r 9ikg(qrch;t a3bgttery. How much energyrq3tgkgb9b3 (r; i2oj ch97az is stored in 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, andz(zbayvxt 1:y //v1y x this pair is then connected in series with a 30-mF capacitor. Whatt: zxv/az yv1xy/( yb1 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-lavt rjv3 v enw*/f9/. The combination is then connected in series with a 12.0-V battery and avew//fv ljan tv* 9r3- 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 inv+ 6cz*nwajxut54 m2/m0sy p9;dgz am parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the cv+mg*y cmw5;4 /ptd6 9xjasan0zzm2uharge 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 ah-e1jt6z2gdv n5qmotyjkp 4c y38 :(wre connected in parallel. The combination is then connected in series with a 12.0-V battery ann 6jw5ttjh3zqpeco d(4yv-:g8ym 12kd a 14.0-mF capacitor. What is the 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 50 97a dwdgucl)) $k\Omega$ 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 dischar yo:x*v:vsxsv u9+l*l ged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor.l*qr7k+ 7u:kd*owqfq jpa8 :c The capacitor is initially uncharged. The Rq+ :r 7oj pk*dkc8l:wq7u*aqfC 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 charged to 6.0-V. It is jb+,h3j juwld/m6fa ,then connected in series with a 3.+bjhju 6ml, /,3dwf ja0 $M\Omega$ 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 resistanwyl*d smfo kg88.nn- c8vbt * 70p7aeace 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 witr )njhvn,u( esqxi7naey gtut681 )0;h 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 internal resistaetjl b3vc2pd2*yc.wt. :kd.t nce 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 okc;ci ,5h w*cxtcn 52resistance 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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