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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 between the tei8wf350e thw yk6de:brminals of a battery, when no current flows to an external circuit, is referred yf0 5:i8kbww6d3heetto 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 betws37p m qm7z)szz5tq-n een the terminals of a battery, when current flows to an external cip 3tn mz)7-zzqsq5m7 srcuit, 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 ser :v*( j8 g6*rprcxjusaies 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 serie)px k-dynhz 1d8hx l70s,

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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 segqg2:x6 xuzwd (0k zh5ries to a battery. If the current of 12 A flows from the battery, how much curr5xzh(x zgdg0wkq6: u2 ent 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. ick1-6cm pu;e-p(k zt j/q5by What is the voltage across any one of the resist-/u-k6bq(eck5cy1p tp mz; ij ors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage source, thi 0f5sbi9 cvt3e power supfi9vbs5 ict 30plied 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 connectsfj3wf. :kpy( ed in parallel to a battery,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected in p*n c 4o.q6m pump59agqarallel, 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 par jn:ni8*l0 vbg(ih,zballel to a 12-V battery. What is the voltage of any one of bzg8i,0bin(j* h:vl nthe resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resisto zt7g( ,65/ugpejfx.wt awqe-rs are connected in parallel to a battery. If the current of 12 A flows w7 tt/ u5gfpzx(j wgqe,.-a e6from 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 of6i hhy/d:p-oj Christmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading j6o:hi hpy/-d 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 y9ui94xvyxo +j8ey50 de t2sv to a constant voltage source, the power 8ds4v5 xj9yvtxeuo0 9 y 2+yeisupplied 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 resigd ke8 (todb.4stance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. Whdgbo(t48ek . dat 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 junctiohm*b d)4q3ikzwz)q2b ttr(4f 2c)bq un rule.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loop rule pg) (cxyx61i1mz ges;.
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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-pd yf 75nuebea9k6.y 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 examplen6z lm gloc738*pduj12vcc8 a 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 valc5tr z,ec3 d cs:6ia;rid 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 series ("+" t e9nugknni0ctr4; 934io/a 3f-uqv jo o "-" to "+" to "-"), and place them in a circuit, the combination 3 i /uo4ontnj9kq9-gnr4 va3fic ;u0ewill 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 bat4k(l,ca*xk5kxe d )xzteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combin kx c4(5xae ld,)z*kkxation 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 ; it :v/w:cezh8jwik: batteries together in parallel, and place them in a circuit, the combinatiiztj:i;w:khw 8/:c veon 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 s o n;tyypee/(tf6/hpl. x/me )eries 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, jm5q m(w8g 2sjthe equivalent capacitance of q82m gjj5 ms(wthe combination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitor *(rz. mee)p(nkrosw;s are connected in series to a battery. If a total charge e(rr(op)eksm *z.nw; of 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 cap(4u wac; gw kb4/voy0gacitors 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, the equivalent capai.p2k9f,tskc citance oi9t s,k2kpfc.f the combination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitot3s 6uz +mkf zj6)e f4qhmw)*prs are connected in parallel to a battery. If a total charge of Qs3pmz6)zfhf*+t 4ew)qu km j6 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 quauq 8lkhm; ql3:bn e0;dntity 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 aysj9d xu dsk96 /8ln se(j6ae-n ideal battery of constant terminal voltage. At the moment contact d6ay6ssu( j l98e /n9xe-jksdis made with the 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 series to an ideal batlyj +e pe3n,k1tery of constant 1,keyl+je p3n terminal voltage. 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 ib3luoh9uk 6;) delqt9deal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistor isl bt 3 qe6h;uu)kd9ol9

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoueqdgat,(czwt gl5 r*1 s 2:dw(ld

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer can be converted to an ammeter by the 0/d:-pnh6m 7 drd xbd-s.xrfq i8q(nkaddition 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. 5k7lv98od2r8evycq 6 wym6 ;xsmfay properly placing an ammeter in a circuit consisting of one res9fkm qydolrw .vm5s yx7e vya8c6628; istor 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 resistance of an xf eh2z(vv*ycbzterfk gm6fg u;5u4*34-/ gh 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, one norma4oo 7e9sti j0n(f+r hglly would

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the resis ly;0ekon1c/q9o0/ xahfr0 qftance 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 across a resistor. What haivt+-)j l.j 8vs gj :)voxd4dkgf9ci mu(4ta7ppens to the total current flowing in the circuit ask xfj4guj):8 +t( lvd-.vi jtga i c4o9smv7)d 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 voltmeterrl/03 f pb-sxp3ah.sy 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 readingr lbsa 3x h/0.py3fps- 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, and a voltszo*:2;xs vey s*np f9y 5pai-:* nlhtmeter 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 ammeter reading, the value obtain-:fp*;y* xpzy i2o9 v s 5nls*eantsh:ed

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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, a 05y y0o jyvog6n3d*,siubn5 gnd 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 6eg)t 3grcy 7e2z4e+8ig ikr5g .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, bw d4x6mt - 1n9j7olql12, 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 of dl+gu,y,3ft efzs*x5+a f 7yza 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 seriesfjx- o: g-e7us 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 flows8/u2+rv vs ia5.hzp maix:oo8 into a parallel 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 int*biqpe5*, uwe4gqw*g( hdi- h2 hpe7ko a 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 paralletg ibaf/3 ms --hrvhv4mi26 /ol combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0 $\Omega$ and a 12 $\Omega$ resistor are connected in parallel to a 36-V battery. What power is dissipated by the 6.0 $\Omega$ resistor?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 120-V circa/8jy/rkay p./lt 3uxuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all werey// ua /lxa.yt8rpj3k 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 light bulbs you can connect in paral9y 5u wolw9v-flel in a 120-V circuit without trippinw 95 lw9oyu-vfg 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 u w,r(zeabk38.z pwq8$\Omega$ 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 hreh 2:3t2p9hsbybi 5h9esr;e0 av j430 $\Omega$ are connected in parallel. If the combination is connected in series with a 9.0-V battery and a 20 $\Omega$ resistor, what is the current through the 15 $\Omega$ resistor?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 4.0, 6.0, and 10.0 r+i(lhkd2 wj4 $\Omega$ 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 9nso wawp941qerd4, 9x.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 9. 2r(ie2y7vde ,tbd/mj0 $\Omega$ 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 +usa 1f9 whp7rgybxj/f95p5 rnd 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 th54zp wv pv ei((e,zg0xe 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 3 8m9,lncrzks, g*y si-nqw1y/e(slh$R_2$, 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. 19-3?,wsn )jgmu13r+qd2ys dr+ry (


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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 current p nqsz4-+b1 opin 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 current in t7zml(3x c2zusje shv5 (as++ohe 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 current i u5iv -ducbrr8a(v6.y n 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 ouai8g ;wjbe.p/e:g245x nr dlf point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point B relative to point C i9s rlzuult,,+b83wfbs kg +n1n 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 por:5c25lyw m d-5kt jaeint 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 in a:b; ysl y5f)jFig. 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 * .lb u)tehe2m.q2rgi ozg/o7B 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 .dpwweeww -): 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 iv; +1 b*akbxppn 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 (7(c c/z (vcepe/q3l5rtz9 xz dukn.*tcc 3lwin 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 inyqpvw*9 blf ;my s6)vkp4r67fsj 8 f2k 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 theil(3cd t4do.x.de 2 kl 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 i3l*qcs4 6yrw+maq a1un the solid wire connecting the upper left and lower left cornersamqyr sqwc la3*1+6u4?

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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 rgawuz ,ye-64e)60uqvvw pc 23rzxq0equivalent capacitance of this combi3ywrwp revx6,v)q0 -gc0z 6z2a4qeu unation 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 uv92y-hs;dxi .0 mF capacitors are connected in series across a 12.0-V battery. How much charge is stored in the 5.00;s yxid9u- h2v-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 12.0p/0rz/rn4b,pwv 7gl i/rswn1 -V battery. What is the potential difference across the 10.0-mF capaciti/4 nrs7w n/p 0vrw/b,plgz1r or?

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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 corv o3h1ger3u +nnected in series across a 3.0-V battery. What is the voltage acro u3rehr+ 1g3voss 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 captbt /f,gj-(wyg.tj ) hacitor are connected in series across a 3.0-V battery. What is the voltaggtt, j. b(fj-/wghy t)e across the 2.0-mF capacitor?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  1.0 mF, 2.0 mF, and 3.0 mF capacitors are connected in parallel across a 24l;mh ) 0n1dghu-V battery. How much energy is stored in this combination when the dgnh;m)l1uh0 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 are7 6 9kn/i fxblb)lcrin3j6 er5 connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of th e6 9llrkibn f5j x37nr/6ci)bis 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 mzj3 +)4 qywt :b:kwmlrF and 8.00 mF are 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 lwy+j b :q 4)rkzm:3wtequivalent 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 j*jzarm ez7( bn8.n:u 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(b* : jzza.umje87 rnn 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 8.9oj1m io4dv;tp. tv +u00 mF are connected in parallel. The combination is then connected in series withpovo i.v+u1tt ;d9jm4 a 12.0-V battery and 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 chbj95g g9j+xu jarged 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 bzn+r,;pd p8echarged to 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 connc qt tgy1/wv,*.i sw 3b3fuz4nected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a3 /cu*1vf .wz,igst4 wb3tqny 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 conne:lbrwya*y : d 9kumz:/kgke8,cted in series with a 3.0uyerad kzgmk::k/ l 9* 8by,:w $M\Omega$ 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 resistance oym v:pdua5;l5 ns)b/ .cx r8xpf 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 wy9 25ah* gohf3coyc;a ith 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 resistance of 100 a,m;su mm: 8hv$\Omega$ 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 resistan4e6 1kslt8.- cbojp urce 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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总分:102分 及格:61.2分 时间:不限时
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