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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 byzn5 qz9wr x( yxd*mz s.:p/,eetween the terminals of a battery, when no current flows to azxyre5 dyxs, pz:zmn. w(/ *q9n 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 between the terminals of an8ia rvg;zbc/zj (;mf5 *jwar))gaf6 battery, when current flows to an external circuit, ia z)wj86gf/rcjn;mrv5b(* agazf); 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 seriebg):d tmbp5,7.hc bnws 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 xwkp,c4yo0*ej ;+dwj 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 resistors are connected in series to a bat kg5fi8au23/c(yr7j -bejuc y tery. If the current of 12 A flows from the battery, how much current flows through any one of the resistors? r3k 2yu (bajig7-e8yfu/5j cc

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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 batterykpw)aw hti, ayl3 2:;u. What is the voltage across any one of thepkhw,wt;y23a l i):ua 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 j)qwelsx.s;/) ,bug jsource, the power supplied by the sourg)bqxw) ;jj eslu.s ,/ce

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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 parallelxhs2m 4sb6p*o 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 pa, )omc2)) c3dhmp fhmwrallel, 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 par4 n.wya lr2h,5qxd4 tiallel to a 12-V battery. What is the voltaxq4, d5a2.ty hwri 4nlge 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 id k(e-)dsx5lcn parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistorsx5sek-()dd lc?

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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 Chr7u sku *5p;ox6fdutc :istmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the ladu7 *t px c:;s6uufk5omps.)

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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 cons pu s+ifz0j,e 1lh;u7qtant voltage source, the power supplied by the solhju+i71 ;0 ef,uzsq purce

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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 maximum power eaclmukkla+)uq.*0y o4.l . cydqh can dissipate is P. Two of the resistors are connected in series, and a third is connected in l y.lkkd0*o.q)cu qlyum4+. aparallel 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 vopi u3xe5 a. xtw5:r2rule.
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17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's loov *09 uozc; dhml;k1tkp 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 an4hh0.zhq lg97wgqdx ff*v5 o* 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 rf *7u770ljrmvmws fi4 ule 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 equationej-43 /dtl *,si0 8ldhcfsdyms here is valid for the circuit shown?


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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batn-u9mwfog- 6xteries together in series ("+" to "-" to "+" to "-"), and placeo x6--fn um9gw 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 identt/qf9p9s*x0-t x owrm ical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combinatr9t p 09m xwotf-s*q/xion will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage batteries together in parallel,k0uo xy+wfe17 7fegb/ and place them in a circuit, the co0uoe1f x+ byekwgf7/7mbination 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 co ;v; 27vd.jckad 6uydonnected 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 connpim +i: ;24wpzuewx7t ected in series, the equivalent capacitance of the combination inz74te: m+ixpwp iw; u2creases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors ar *pd6d+enyly- e connected in series to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry n+ eyyd-*l6dp?

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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 a :cya*dq92gjq v2yxlhahw:: 7re 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 h *-z**t5j83f enl o3iguue4x p5wa dccapacitance of the co*8 h c lzginuaw*j5e3u-t d*ep4fo53xmbination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in parallel to a batt 88v)tgstcfgdt: qf7/ery. If a total charge of Q flows from the bt8/ts d: v)g cfgt8fq7attery, 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 quantity f:cet 6wb* ux6RC?

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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 capacitorw0ib 7qv1 + l3a;zduik are connected in series to an ideal battery of constaqvwk iubl73iz d0a+1; nt terminal voltage. At the moment contact is 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 baz k2n ,h2(bfoottery of constantnozh,2(b kf2o 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 serj jg0*tzbh b8pfzmrroa5 o57(qfk+ xw7:p.u+ies to an ideal battery of constant terminal voltagq bo8g707hma(+ *x jfu fkwozrp+5:bjr5z . pte. When this 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 shoul.x 9z jdjiv.n: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 beojvmno+c,fz e /.p*8d6dq p*m x/ks)n 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 a og7xq3j a6kloa,/0i qmmeter in a circuit consisting of one rg7ji3 /o,q ao6kxql0aesistor 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 amz+ytgkxm +32 dr+zdc41ip3 blmeter'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, u; t7.usj0 6fs trbax.:op9cqone 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 voltm-+ f* *sllnq f41kq swxv+ ckkb0fa/7weter'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 vol6rd f:p5*d;i zvghqw+eb* (motmeter across a resistor. What happens to the total current b+: *qe vgm5wdr(dzofh;i6* p 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 ammeter, and a voltm 23:xja hkf;zueter is placed in paruahj2xf kz3 ;:allel 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 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 wi 160,m(l2fl2 z dda-wuv ckvqared in series with an ammeter, and a voltmeter is placed in parallel across the resistor only. This networav,fdl(wk2 16l mqz0ad vu- 2ck 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 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,x z35nx cy2 zo2cr97ez v2dkh8 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, 12, and 6 bg-ha -g2cly2bfu f(nuv/ +k6.0 $\Omega$ 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, jzpbh 7:/,d,jxgk -r 0*nt giaand 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 combinlk 6lnof*3n9is; hy8y ation 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 combinatio7nfk9 xa bft7q8pzh--n 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 x7u 3f2 myvoc-xq(1cscombination 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 a16j . jce0pn:.mwoqe 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 combib v1 s46zb5og uj1-zihnation 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 ap j0/nps28 qspopliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwav0/po n82ss qpje. 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 l i,:p9rilz9 qncu/+xq ight bulbs you can connect in parallel in a 120-V circuit u,l9 cqq 9rpi /z:nx+iwithout 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 uv3wm 38 )ukyg6drqq 9$\Omega$ 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 sa/-5y;feay cj gy)sao+b ;p1nd 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, pkq0r 6) oihu2qyz- j66.0, and 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9)ch qjo -k83yl.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 andrhq r8mh 2-30ky g7tru 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 5.0 $\Omega$ resistor?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0 and 9 .q rgce,zrp1*.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 r261m6hfw0 op;sc rk* wcjv;r 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 throug b0; hyfjjac-86a k1gsh $R_2$, 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. 19-32ur u o2 jnxwcipmfbo8m9 *+)6?


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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 curre)t w -*w 9-a0lbwqwnzunt 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 current3e( /h xyx/t7/j rn zcom,0.lzq,9juzo hng(a 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 current in tm42 l7/)dba30v jouax+ qmegb 6ypo7 ihe 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 relativ, g2myh/ije. be 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 po(:gw1*el evfo 7z3nex/gvr 9nint B relative 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 poinz x)9ti5ankjd.h1k nt;b2j9 pc cj;1tt 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 ff x,:u4jpxk)n q( dg6x;2 haqin Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential drop from point A to point B in Fig. 19-5e 1gtikv-j*l: oq y(0fwlb0 )(,vpa jmve7x9 m?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current q wkn7m7yr arl513g7hin 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 ths7.- fzvnz-efe 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 then+v w9w8.fq fkc4:qx +t sjq(h 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 mhke:d++ (f rmrt wjvh5i;2 h912 $\Omega$ 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 i )7wzbk(- omdan 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 ta l 6-c.qbgwr8.qs mb6he solid wire connecting the upper left and lower left corml8 a6 sq.6wg.bcb- qrners?

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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 ic *s7pjsh.zr2 t9/ 6 yi*lsbpwn series. The equivalent capacitance of this comhsw *p/sb ti 92pj*c76zlr .sybination 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 8jvh6ru :o:+oib ha; g,gfh1kacross a 12.0-V battery. How much ogk;grj:u 8v1oh 6hh fai, :b+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 connected in series across 4 8yfu; i :0psk*nu9(wrdrnx pa 12.0-V battery. What is the potential difference across the 10.0-mF capacit8wx(0dusr ;ny4p:r k u*n 9pfior?

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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 acr1-ddtb98t cz:1r n 2wqh tr*xzoss a 3.0-V battery. What is the voltage across the 1.0-m-hrtqtrz d *xc8n29:b zt1w1dF 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 caww96bqhk 6x2 npacitor are connected in series across a 3.0-V battery. What is the voltage acro6bqwxh 6wn9k2ss 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 acrax) g4 ph4n dv.*flj,ioss a 24-V battery. How much energy is stored in this combination when the capacitors are fully)hv j xi4*ngd,p.4afl 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 pa n9ofj-s)ok ueg6 nwux.ts 5(2ir is then connected in series with a 30-mF 6.u 5 ng )(2u-xet owsnfs9okjcapacitor. What 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 combina) y2o fj tpeepm63iq;1tion is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is 1eo )tfijyppm3eq62; the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in pa7cx+u+o1 ifnsxa. cso4py mwh:vu5 :* rallel. 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.sac: y:xwv.fo4u 1pc+5+u onxm 7sih* 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 paz n :+jv hltgr2p** bqp9lp:0vrallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor:p p2 jpnltvr h**:bgq 0zv9+l?

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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 cpvbsype0 2- 8f70 3qxopax y1qo9u7ed ju q46sharged 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 chargedptpce ,zr )/ jf*lw03p 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 connu c9cl 5ps-c;t0h-qduiy( ,(;cpd sxxtgz 7;x ected in series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is chargec pd,- ;(thxg (;qsd9xlt;5uccyz u0p 7ixs-cd 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 imn;ed4b 4:df ss then connected in series with a 34ds : bf4nm;de.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 inte+xncc tc*8n6o sww.; shv5x1qgu :4c qrnal 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 co.2)j ptq9j:yrr 5v8 kcnvz7y a 3r/jlpil with 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 interns6 2(/raiv nafwpl6r 7xg-y*gal 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 coil ropx+o- tbt y4;esistance 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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