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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 batte,a;0 ggwjr 6pbp +w-vme i:fd4ry, when no current flows to an external circuit, is referred t m+gvrgf640pdj,wb -pawi;: eo 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 terminals of a battery, whenc:3h0/zeyw *(u)m b vuk3 srnb current flows to an u k3(uz:bvr)e/b3yhs mc wn*0 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 t4av 0kmb ez+.fnyw4l6o 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 series,b o ,idg ; *slvs54(jzylkk.5k

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors a uvogql,h:q . uaa+*t4re connected in series to a battery. If the current of 12 A flows from the battery, how much cqu,av:h.*u +o4t lgaq urrent 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 series to a 12-V battery. What is thq8/uphfaz)8 c ov-iv t(iu91a d.cko/e voltaiu1.ic vz ot fd8 u)c/ov -q/9p(8khaage 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 added ai 9mrc (jke8v0 -nm:bin series to a constant voltage source, the power suppl a-ve0nirbcmj:m8 (9kied 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 resist+t:s7owet5n f3gfoh h/w .9;4/d*ktnyn icy mors are connected 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 connecte,xqa;2.h0kkyzk2 xy g sx9 d2zd in 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 resis4 0po5zy-rkqi b- :akotors are connected in parallel to a 12-V battery. What is the voltage-05a o byo4ikz-:kq pr of any one 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 p)*5rimlxwmb 85 qxc4v arallel to a battery. If the current oi*4 m xm5xl5rcq)8wb vf 12 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 are connected iniyx is9qegg.-y8r dp4 b 57+ai parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading t5yepqs yi-g7db r4x 8i.g9+aio 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 voltage source, the powerm9*a8b 1aulbc8sfn 1 n supplied by8bmsnu1n *9flcaab8 1 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 r h o.5n:;p-/bszmyx d pzzs7p7esistance R. The maximum power each can dissipate is P. Two of the resistors arez poyx;phz/s7 .7zm nd-5 sp:b 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 rulxk9qh6 vi;803 fwsao72vea 5 itrmul, e.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loo5sdlay1;tf7w9gh /v k p 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 is anoh1vd:gnz9 c+ 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 exampleyq y2jvaxagte* lu e72 ,*4s.m 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 shown? dzgvrma62m 7 7aozy1/


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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 batterieca,*f-fn sh /9i ;mqkks together in series ("+" to "-" to "+" tq,kskhc9*a-f; f nm/i o "-"), 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 together in series ("+" to )/pt n3fc+izs "-" to "-" to "+"), andnti/s p)3 fc+z 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 baoj,++ 4qno(8la; fj sk sot1gatteries together in parallel, and place them in a circuit, the combination o8 (,+4jt+o la;q1f sgksnaoj 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 conn 1sl5pw mxxqnqnsn7310xbn* (f rko.*ected 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 connected in seriejhd p+ q,;ot aknl 2;zk,ctg y,,w;rb.s, the equivalent capacitance of the combinatio zko+,j;br h,yw;,;2c .gqt ndatlk,pn 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 toar -jg6t,jz cs1 6yxjyx/g 7:gual;6etal charge 6-s:cal6,ja1 ug yg6 j;ytge zx/j7xrof Q flows from 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 capacitors are cot n3.j3; hn:wkzvrpi4 t6m (ysnnected 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, the equivalent capu8 uh9 kyaws7+gn/g9wry8 bd.acitance of the com s9ub8 d/hw+ay7w rkg.nugy98bination 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 are5jc 0x6 duz 2os:0ykof connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does ecouo 5 6kjd0sf: 02zyxach capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the quantity - uhr/x8yl 9zjRC?

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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 - atk5eoknl22k: -y mgof constant terminal voltage. At the moment contact is made with the b2 k- 5kmt -ok2lygaen:attery, 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 cap*9lq gah-+w rw+ne)fpacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across -w+nh)feq rl *pwga+9the 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 sq..i qffi )ixc,/l pe04(p iymeries to an ideal battery of constant terminal voltage. When thism/i.q fliye(, cppi. f) ixq04 system reaches 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 shof*t qq6b7x c;auld

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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 amm/t jj4j 1-imlal( qsy9eter 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 gv8d*)x7 ncj-/e z e asf/ hsbgo+0un5circuit consisting of one resistor and o 5+vg) o-s8nu*ahnd bxf0zgejc/s7 e/ne 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 shungs1m:e, x:c cnt 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 galvan50z 4pra yek(yometer, one normally would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resistance of a voltmeter's series re)7pp 4xu.lcmt6 kcq 2gsistance

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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 obt17g.pv bo3gk4sssot* ained by placing a voltmeter across a resistor. What happens to the totag1ovkot4gs73 p s*bs. l current 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 sergq)gz q1sjk8qxp5* v)ies with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across j1zq8sqxq)p5 )kv*g ga 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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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in seio ,6u9k tre cmoj8 ixvo23j(6ries with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a batteei(o2xicv,o m orj63j9ku 68try. 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.tthqe6g 7 +lo jf-w3- 4qid+lp0, 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. gyost. uv1pii*//4t7jk 6waz0 $\Omega$ 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 1)ik+ (ak-ws xy2, 12, 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 combination ofk 32twr kufht fn(q5iu.i 9j+0 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 ra/wa0 :t xs/u+k1ltj 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 combination oflrcw+xwx8ev. j* k4wkgc,)p23 pn8sf 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 combinationsgy8:61*jlkhotn k 3iqc+c4 m 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 of9t2s yrt1gw v6 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 circx/m *czxv sa(l5g8:qfuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw?x fq8(sx: /cz5*l gamv

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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 nuplz3pacqy00 1am k5-zmber of 100-W light bulbs you can connect in parallel in a 12 z00zm 5-lpka3p1aq cy0-V circuit without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 1j,yyv7 esmt0$\Omega$ 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 3h.p67bbg e0oj0 $\Omega$ 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, 6.024gco;l 0lsse, 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 5.0qkvx1 44owdyc2 kr(,z 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 5.0kh;jy 5yd pz8i/98t fw 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 0 ij8/x usrh +:lbb9ojand 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 ofyi ;ipwh+9b y6 the circuit 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 throu,d;7+g f4oow il59mtnlv,pg ygh $R_2$, 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 ream6c.aw 7i:zeqiy*nciv 89 asf h+ -k;sistance 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* +vw8q5ryrtx5qu4ea -4, 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 cup *izgq,i.h;7maam) v rrent 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. -/n 8 fg-b,yw4+ffj8 s z43 2l5apvihnypqryz19-4, 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 tx550z mou;o*kzlv,ou o 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 d7a2ay7qsy78 6zq n d0: vqns a9muqo7relative 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 in Fig. 19-5?)7 dvngxf j 3vyuozf1mwc2zh 79ho -.3


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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 i4/+ zyqwx k voinr:9j.o 3en9un 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-/8diyu7l f2aw nm w-+zxvw)a4 ajj*crop 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 currentou ,a+7)33.cppd z*r gq,xizyya m i4n 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 08gv/,tpj x.ss+z rzaolk(-z8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the*+* 6:s1 -qwevwxnvf gw x)scl 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 12 b w3exrxns9s1 bm w,1 1/is*cw$\Omega$ 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 3qd-9qn0umxv 5r9 0kh)qiq ,wt yy.wd $\Omega$ 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 sly4x5,ls -wc colid wire connecting the upper left and lower left cornersl ycxw -5,lc4s?

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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 equivalentk.;2ngiryt; )avs :qf capacitance of this combinationk:;vsgn.tqf i;y)2ra 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 capacitors are connected in series acros , fda4pee/ -j+j(rkjis a 12.0-V battery. How much chargepdj(-j4faki jree,+ / is stored in the 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in series across a 12.l91iiwa2q0 j )0rowco0-V battery. What qloa 0ri) 91cjoi2 0wwis the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in ser/-dc .p-leil rgdw/)iies across a 3.0-V battery. What is the voltage across the 1.0)l-.ded/wl- /i r gipc-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 ac wbc.fwu/ /jblnc )to:d;/c7 lross a 3.0-V battery. What is the voltage across thebn)d lf7:lw; bw./c//joctuc 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 acr)2has wmxzw od y(k+to: /6ph:oss a 24-V battery. How much energy is stored in this combinp:zodh w: +2ywmxsko t(h/6a)ation 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 connemb/9 ,1 bdloqkcted in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalenodmqk / ,b19lbt 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. T)yh x: rcmip.9d9wpo-d xmk 49he combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the eqdxi.c:d) 9m4- pow9ympk9x rhuivalent 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 parall oaw9dz 03kg/qda 2q758y lycwel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What k5cldz203qg9wq yaaywo 7 d/8 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 com/ h/8bel+y h4c zyp4agbination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across ylb/ap 8 h4ygec4/ z+hthe 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)*lh ye8s4nn+zy aka+-bec 8n through 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 th8 j ,ukx4bll.zrough 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 inukz1-zo)+ peg ta*h /n series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V ba*-t1ue)kghzaz+ o n/pttery. 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 th(l9 g7)5xy dxutexoi +en connected in series with a 37lx+9 ud yxtgx5e( )io.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 rescf zpn4iz; 4*n zy/1svistance 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 rr)e /l5a -rxpwesistance 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 resistm m (f:h)eo oixe, 3z4l+gyaz2ance 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 resistance of 40.q;*d1.o cz2qwa xndros; y* 3l0 $\Omega$ 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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