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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: 游客未登录  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 betwee:b nttaa7o 5 yk7o9bir403s irn the terminals of a battery, when no current flows ts4 r0arib ok:9yn37b7it 5 aoto an 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 differe2n v9scf, r:kznce between the terminals of a battery, when current flows to an externafkcv,rz2ns:9 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 resistors 9f 30oqz1.w 8r/wpkjqle55ntjlrae2h* :nr u 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 connecoyt6rjt tj1g06rw q, ,*iug; kted 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 resistorc*rm nhoj:k4h,ty* f,s are connected in series to a battery. If the current oftk,n y:r*h*4,cjho mf 12 A flows from the battery, how much current flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistod if6rxi0l1f,n/p ; fgdpj +qx :xq:m+rs are connected in series to a 12-V battery. What is the voltage across any one q: ipqxd;1jg,dr / x+6l :nfm0+xpiffof 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 seritd 1shh:b e n15hl*qsrd0o):ees to a constant voltage source, the power supplnq sh*l011 r:5t dehosd:)bheied by the source

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in parallel to a: io;; fachq(yg20olnf ey+.i 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 th/z5:p w a bb1xuxyy+oj,9tiz9at

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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 parallrn zrd0.;kw 6qel to a 12-V battery. What is the voltage of any one ofw; kqzn.0rd6r 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 areyo (0whzq )c.l connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows thrzhq.yl() ow0 cough 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 in paralle,f f rm l3d1 ladc5mnta0c7h4(l. What happens if one lamp burns out? (Assume nec1f753 la( f4rh mamddnctl ,0gligible 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 voltvoj4wwe*y 4/9d bk*5ocb 6kysage source, the power supplied d k45vs/*y *wb9jc4 6ywkoboe by 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 R. The mfo 6i4 f.p6semaximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network can disf.of6e 46mpsisipate?

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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 rule.g g46 *2s yvanw:k4khz
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's lol/tms5d tp*98ei r5q jop 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 an example otu-g f:d8pvp ;+t+i kof

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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 exa,eycb*t33pqzq dr01tmple 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 v2ri,- qywgfz8 c pjyk/q 1pam/+1t ;mi: gu:vualid 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 batter5 ty/a ga ux7y3/ezn/pies together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination53e/apagtn xzy/7y /u 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 togetherspiqs(e 7q2; r in series ("+" to "-" to "-" to "+ ;er7iq(q2ssp "), 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 togethe8cu ,; jy/- kg ex4 ei,e0vkt3lwe)vxsr in parallel, and place them in a circuit, the combination will providee0uwekvgyl et)- i,/ex4 3 ;,8xvsckj

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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 cone :)n rrzu;g20z+kdvanected 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 series, the equio8y(2o; va.wn qghsh 9valent capacitance of the combi9w h8s 2aoovyg. n;qh(nation 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 total g3* czwo, ;h8.1ajkxkc )gr a;syo o6scharge of Q flows from h;okys g 3;srkxg1*ao o)8a.6w jzc,cthe 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 capacimx+ yqj f/f496i 0z4ywpxjo(ttors 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 capw2h -boyy4s r1acitors are connected in parallel, the equivalent capacitance of the combinsw-y12 bor y4hation increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitob*gml v82 yn)prs are connected in parallel to a battery. If a total c lmy8vgn* )2pbharge of Q flows from the battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for the qua0:6kbq ddziy*is5 bj u:tk7 1xntity 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 idealq(y0l n ,cmg9a(gk3t r-d)mffyz :dy5 battery of constant terminal voltage. At the moment contact is made with theg y-nrmd0ymf(q( ylda 3zt ,:9)fc5kg battery, the voltage across the capacitor is

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in e )a nufqogf :pl5:61)nmsj6cseries to an ideal battery of constant terminal voltagclm f6 g)ef:no6sua qnpj)51:e. At the moment contact is 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 ideal battekk. 85 t d;m;9s-rlhbk,af;mqng gq letf; 9(ary of constant terminal voltage. When this system reaches its steady-state, the voltag;seangfm.9- (h; gda5qqmkt f8 lkb 9;klt; r,e 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 shoulqf+ppzh ( :t-/mo. 5/g )dxw7crzu u/rgord /zd

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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.xdfgpy1a wpftk:4s v,c9 q. 5 converted to an ammeter 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 circuit consi5a e *n a(9/yosjbnu(vsting of one resistor and one batteryabye5os n n/ua(9*(vj. 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 resista( rsbb fr. btqzm.dx::r-s2 d9nce 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 vo;2et,v,( qdy+fpffcz xnp86hltmeter from 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's series1q(3gac*5:s /ffw+s yc tcc 4os-zutk 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 across a resistor. Whatjrxj8kat 6 /5q happens to the tot5r 86ja/qx jtkal 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 series with an ammetesisov-se*p 22 0+m peor, and a voltmeter is placed in parallel a vs22 seop+o-0eis*mpcross 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 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 i-p ;puxjaxx5/802 nh aa-j y9avor gn)s 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 tja )0xjrahx9 5-x-au2oyppn a 8gn/;vhe 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,wztn/1+28 0z gxcbf,ewkx)a8 +sxou u 3.0, 5.0, and 4.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 1+ 3(jskeoc6bx/oj 4d a2, 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, an t+5md/z,i lkfda5c. qd 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 seriew ()wrfm1fr k--/e lats combination 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 of a iq3/s l6llakgf3zh06 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 op0 hwrx6m o1.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 zl09 4sdy d+ +mpfw4uzof 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 par4bmst 2-br-s yh;:y vpallel 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 nge5u 4uk*(ga,c a 8faa 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same t5c4afa *eknu 8 gagu(,ime what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs you can connect in para-n2cpkkkn xh87t *;m kllel in a 120-V circuit without tripping ax k*n78t;hkm-k pcnk2 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 2.0r3l :-14u6 i -opnppk3wpflx* lfa;lu $\Omega$ 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 a fdfg/ f(7tcw f2sz1;jnd 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.vl zp-4jy4 +dp5tdu *n p:ie9z0, 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 a4r8vs d8tc6adnd 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 4.0 $\Omega$ resistor?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and ,qkk,*)m,dfjckoaa4 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 a eoly8 wv-w66b3boif2nd 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 resi0i mu9-hua06 kbknu6 sstance of 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 through (ds2e3qvjqre lbe+ ;/$R_2$, 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.wvc 0 *;2phsbl: mmzugfox;- 4 19-3?


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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 100 \; V$, what is the voltage across $R_5$ in Fig. 19-3?


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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 4.0 \; V$, what is the current through $R_6$ in Fig. 19-3?


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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the curren wh(on fd0d8fs s44 21yyze(oe 0bg6izt 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 a z+7 jh8a-fwgoh +yl-h;5ezi9 gz yw,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 cur ;crfz fklpdfv ildy)1n1.q2-+ e3f8rrent 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 zdrofpfgmpz+; e(f7 ymq4 *-,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 point C iy 0.4dyrtb9xa fm; iupb, 0t1bn 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 poin9.uvzptri 0/ t8 +,el d ;fcm6uyru1idt 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 bat8uei8*c-et n c. wz/wi-pprw*tery 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 dropsggoz4 /b-pfzca83(w 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 inqr4pw .ydthj:;f l9l8 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 current9;)* mvb6peuqs7 x)wbl mxrj 7 in 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 current ludfr o sl6du f ::mrbqic4;*ngj2 63.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 theqf/ if;4t ae: g2 xe dbn,uh7*glse9c( 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 intkp fodo ry 85xa30/e2s6mtw/ the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecti0b dv vh4zo,4zng the upper left and lower left cornerozvb0 4dh4z ,vs?

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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 connectpryvw3*s l u:avkl 40)ed in series. The equivalent capacitance of this cr:a 4 v)s0 lwkpvl*uy3ombination 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 across a 12.0-* weaxl*w /uuzgx(8kk:q 4n9 xV battery. el8uqnz awkgkuwx x/94*( :*xHow 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 capacitors are h7j ;c9mhik(xokh+o +connected in series across a 12.0-V battery. What is the potential difference ahho(+7ix9k +mohk; cj cross 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 3.0-V sibpwquu9s( )(ghlrhz 3 g / h5wyg1+5battery. What is tw3g gy(uhhz91 g5 b lq+ip w)u5hssr/(he voltage 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 capa ri/ay f2m7m3vcitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0a72mr /vi3m yf-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 fga:/:.js dp z6v340opwup (qso p1ld are connected in parallel across a 24-V battery. How much energy is stored in this combination when the capacsvowj6g3: pq4:/ .pu (pl1s0f dpzdoaitors 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 pai1duo1s4zkze q2 gy)/nr is then connected in series with a 30-mF capacitor. Wha4ek1zdy/1sog2 zqu) n t is the equivalent capacitance of this arrangement?

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92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel. The combinatire lep1qed.o)j/ehq: ,,2vsgon is then c)1d: rhgeeo vseq,q,l/.je2ponnected 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 artqnrl2 r1sbg 7629 c swqm w33nc4qlp/e connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capac7qs 3cq2wp n/rl91cmr 3bl q2 6nsgw4titor?

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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 p2i,8wt90 1 u vkexv3(6vieaew -wbeosarallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitorww1 v9(vut6-b w ai,s8e3o0ike ex2ev. 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 chal4pw 0zx-n vag7:kqo 7rged 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 th(0z;*pf-ohbcs.8w v l)rgetn rough 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 withj 0fte9admyza1rr0 4 4p7xo 0j a 0.50-mF capacitor. The capacitor is initially uncharged 0yf rdj0904oej4mx 1zatra7p. 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 char.h 7-fufmkr3z ged to 6.0-V. It is then connected in series with a 3.u .7rmz- h3ffk0 $M\Omega$ 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 a; b1kevh)qqb4r os -;ez2 s)in*z12tn jmp5w pn internal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a 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 resistangry,i -dnb2n+ ce 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 resistanclq9a+ ytu16j re 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;fbdrog2bf m 0,4tm9s z 2e,rr.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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总分:102分 及格:61.2分 时间:不限时
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