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习题练习：Physics Unit19: DC Circuits
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 77 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://51fly.win/test77.html
 作者: physics  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 battey02lf) j3yjsy i* 9xswry, when no current flows to a90yxlwi)3 s2 fj jsyy*n 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 betca++ gx vb1 jjgzv3u7g4duj0* ween the terminals of a battery, when current flows v7gu4 jxd1 v uc* gzjaj+0gb3+to an external 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 resistors are connected in series to a batth3e,zk/mijlmv 9hh36. x*kexs6y d- fery

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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 ser 8sp:ho eiuc-7ies,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a battery. If the -qok56mou)-mw m tfq mjyq-oic677g 4current of 12 A flows from the battery, how much current flows through any one of the resis4ofqmm q6- kwu-)o-g6mcq5 ji y o77mttors?

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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 series to a 12-V bat(gq ua87uske1tery. What is the voltage across any one of t 1(k7qea ug8ushe 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 soh9): affrnzc d 27vg/0:ikeeuurce, the power supplied by the sourcven earci9ufh07):fd2 z:g /ke

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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 i paq-;33w d 7p-znchsrqhb09 pa;-bl tu 1lk1mn 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 i vz..swu7nap ht96/ nan parallel, we can be certain that

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a 12-V batt0.dr.ne-etck)r(z gji -.i urery. What is the voltage of any one ci e kduni.rj )-g-( 0tz.rr.eof 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 battery. If the z 9r k( imga;fdv(1h0jcurrent of 12h( dk(1;f9g 0vm ajriz A flows from the battery, how much current flows through 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 w vn0cki3 cv08z:vx2 vare connected in parallel. What happens if one lamp burns out wcz8v0 v3kiv:n02 xcv? (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 con 7ggcb3 ldhu29cl9 :8 psfg0ajstant voltage source, the power supplied by the s7gj0c 3dpa s 2uc9lg:hflb8 g9ource

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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 rexvo/ih qwt wh ))7)9mr hv3rw .wg/4atsistance R. The maximum power each can dissipate is P. Two of the resistors arwwv9h4q a.r7x)ttm w/)gvwhr3ho i )/e 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 juncti/yb mavp8 /qpxc93 4 v+lbyhe6on 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 ru kx/.nb:c(- jahz5 mgule.
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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 exam* ap lde5odai, 14ck,2mub iu.ple 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 q/2aql f cyc4y yab-+*rule 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 show+a( )vx9mog;2kusmq,fyo z:) xym s .hn?


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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 st2h h4sdguot;:;a2ly euk dd/1orage batteries together in series ("+" to "-" to " ue 1dk;ld2o/a:hy;d4us t hg2+" to "-"), and place 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 os2y k.t) sjrjd(4.hs together in series ("+" to "-" to "-" to )s dsj y4r.kjsto2h.( "+"), 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 parallbx6: xgoq9o ef6* 4kcfel, and place them in a circuit, the combiq:6of9fkco4 *eg xbx6 nation 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 se.8l2)lwcnn w *,vx vkfries 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 capacitork+5 r-at go 9mvdfnx- b.y:eu/s are connected in series, the equivalent capacitance of the combination increasegubo-xev k tr:+m-ay9nd f5/.s.

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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 co3rud53/,oud fwrn6fp- t;rcc nnected in series to a battery. If a total charge of Q flows from the battery, how much charge does each c,ut 6r3ucr/d ;c3p5-wndf orfapacitor 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 i427pdslpg r7 xn 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 ivnpo:6j5 j kr8 6 v/qnl4bej7tn parallel, the equivalent capacitance of the combination increasesvrv b8p65qjj6: 74ek nt nojl/.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capa/ 7lzbhh-d 9hmcitors are connected in parallel to a battery. If a total charge of Q flows from thedzb hl-/h hm79 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 qua(/ ti/f5a zxr6w0rssf ntity 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 b1kv rg3o7hi;)td oq1p ds(d4 to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltab hd4 ir1kq p71vot(ds)og3d;ge 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 wmt:u hivbu;oar9c ) 10 *z.mpare connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the volt19.pummcuw ta v*h0 ) :;oizrbage 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 *t/j gypwus5,)z: )za g4tztjideal battery of constant terminal voltage. When this system reaches itsg:)sz j )5yttjuza 4gwtp/, *z 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 shoul+et q) pgq5aj.d

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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 amme npt6sy0/jw j(ter 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 obtyhiv+tg/gxryj31wx s* w6, ;aained by properly placing an ammeter in a circuit consistingw j t ,ixvhy rwy;x*1g3+6s/ag 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 resistan)2*th9j rapr nce of an 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 from a galvanometer, r dx20d:bnl k5k,al4bone 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 resisusk/)z+:*lr(0v siq ox ,uocrtance

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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. What hap9z/zs)-c. pnj-xlbio(dc o ;ppens to the total (xc9-plp d .obs)c no-j;z/i zcurrent flowing 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 ngxy0cg,b 8f3b2ui1p 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, the value obt8fcibgu031y2bg nx,p ained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor iss *7oo3choddf35zi23bq xi ) u wired 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 resistanc3suoz)x*o3ii obd2q3h5 f7dc e 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.b(czi(95wk a y- wpfr d*1 u3.nue-qqs0, 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 qakmt4w3 r4kmzd5yjh(. 2r:dc nfj4*.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, afv wqt,,h ll*. lsvmxys332*nm2v( dw nd 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 combinatio,be2( getdbr* t mw4*tn 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 i* zzjryx3xw1 7nto a 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 paralc 0 vrx ssjhmbj3,.8tk t8*6s1za*nwllel 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 combi9ov3c(py l2mkzl ,wgd) xemq.:d 1-jination 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 combinationp,ix* xbs)lpa2uc 1q. 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 cirlnh;5nnwauaa f,( 8 -bcuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. nfnu;n 8 ahwl5a(-ba ,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 ) jetb )pv3isrwugix-)v65 q 4,jayl (light bulbs you can connect in parallel in a 120-V circuit without tripping i3jsv ,j 4qip awub )56e)-tl(gxv r)ya 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 2.0o8pzk t j:3s+c $\Omega$ 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 aray;z 53rc n1j*;k+ ts:qmoznnd 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 n k*g4 xr*b7rx10.0 $\Omega$ 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.k,tc( use;ryrl9s; g: xpp+ 3c0 $\Omega$ 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 jmn s 2vb,*b/o;pjwl5s1g t,k 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 anudsyc19z+l 4 rd 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 ;*h-t gufer3j dv(ll9 j1g 2grnri-k (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 throum1e:uw. 8mrv.6 rliefgh $R_2$, 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 r-6 bqnr qly) *e( grq;x88pwwcircuit 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-q e 4j/au0.dywbr)gc a)6h j6h4, determine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the currp+kox0h37tg kent 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 F 4vcnwzvl-1ofl4c +(o t g7jq*ig. 19-4, determine the current in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point A relative to point C in Fig. 1ukyh i v j zwz)t6m;*d6;6zs:q9-5?


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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 point C in Fiudo8skh 3 yaaxg f1e*)x-;fg:g. 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 in F(qio 6:d6o9x ,yuq 9dnkfu(yuig. 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 from0dlcsjc7m;aw x2iw -*rmv:/d the battery 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 d-.m glfjya9db,vf +7 jbn2p2krop 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 current in t fe/y,te8 2vurhe 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 t) qw2katj7c ;xhe 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 l5f /hre(zmf/b;+c- eh 6vhunthe 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 ie tzwkxd*a,t:(1 r*zff)8w )wij 2 vkun the 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 1,i3 + 1pja-zrg(x6ifr)gyspz8 $\Omega$ 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 le;-ogw 0p iz;iijc0 h2ift and lower left cor0;iz0ioj icph;i -w2gners?

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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 connecteq3wvv vl),c ,nd in series. The equivalent capacitance of this con,cvw l) ,3vqvmbination 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 capacitrpwu h-o 3esuec2 9buu0t)uf 2k.7,hr ors are connected in series across a 12.0-V battery. How much charge is storedsuehf.r 3uh2 ),u9uto7upre w02bck- in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected ipko g,/tu zwj 6buf/8jmi:0; sn series across a 12.0-V battery. What is the potential dso0ufjwpbi t/j ku;6m8:z/ , gifference 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 series across a 3jv vrefeym+e 1z g49*6+xtzb3.0-V battery. What is the voltage acrov4gzvx*3bytje1r e+f6m+ez 9ss 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 acrj3)wctbet zm8)tcow.i vs9o/7e zm -8oss a 3.0-V battery. What is the vo.)ceoe)w-/ z7 i8c 38mvj smt9ozbttwltage 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 capacihww03o.m5 tenp tt8d8xaq m/ip06k9stors are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacitors are fut0m8on 0hamkp68w ttw9s./5 xeqid3 plly 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 pair is353 4exmu8dly4 u 9*caldfulmd lah*, then connected in series with a 30-mF capacitor. What is the equivalent cdf 4dl,4l cm u*umh59a3l3 ya8l*eudxapacitance 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. Thatyq6:r2o c+)tf3ky be combination is then connected i +ok6 ar f)qyy3:tc2tbn 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 a v2l(g2 srf:+5a tic86emjccm nd 8.00 mF are connected in parallel. The combination is then connectc2semc6cf5 a(t+m g2 8lv: rijed in 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 connected in parallel. The combinat9)k +m5 i3 asu;vpgvigion is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is+ kuvgpv img)a3s5i9 ; 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 50vpq: 8nhyxw070(ryr ykh m7nt2 gr6 j9 $k\Omega$ 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 te8msl xyhfhuh4, v4(uj3 up7 me /(9yyo 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 s8pc.f (hfr z(zeries with a 0.50-mF capacitor. The capacitor is initially uncharged.z8hrcf( pf(. z The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in series wit/ ql z*uf*;iy;ob kyp -h+wqy2h a 3*+z;blupo-/yyfqh qkyw*;2i.0 $M\Omega$ 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 resujy3 ote*s30u z+c2wf0kv 9ri 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 a resistance of 24.vm)ju.my16p* 6lpohpt) o ( lq0 $\Omega$. 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 inteao0k 8q-xen yep4/2 exhfzt(5pqp1 v*rnal 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 7h ir/ 4jn+d/ brpld,cfm 5)pbcoil 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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