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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 tezq cs 2xt/d1 bx8o2nq*rminals of a battery, when no current flows to an external circuit, is refednxz28*/xs q 1tb2 qcorred 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 asoe1:9w5qfc2q2lv y xwbw2z*5 ssqd0 battery, when current flows to an external circuit, is referre w0of 5 xdsc2qwby eql1 vq29s:2*s5zwd 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 tvgo+zj ilr3mt-o+r(zw, 2fu6o 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 spy(;k ; m/crqaeries,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a battery. If the currentg tb42)dnf5ifp x:n e1 of 12 A flows from the battery, how much current flows through any one of the resistors 4bidng 12pn5:tfx)f e?

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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 oc: 8hu1.h94f oci lrv12-V battery. What is the voltage across any one v uc8rho i.ho19:fl4c 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 in s/:h.2)dnro( + risr z / d/nvovof1dqreries to a constant voltage source, the power suppliidvo/rdsvr hro/od2( ./ )z q:+nfnr1ed 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 batterbbt8o ;lon1: hy,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connectc; 8obl (-hd2q vwi1de czj:/jed 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 resistors arv. 6q(te47w tzqs fhdle;w0tbbj/ 9,se connected in parallel to a 12-V battery. What is the voltage of any one of the resist6whvt0.be ;/lb q e4sdsjt z7q,w t9(fors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistorv(b 96xoy3bsy s are connected in parallel to a battery. If the current of 12 A flows from the battery, h 9by6x(sv3yboow 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 in par( b upwh2(urch)j k+d8allel. What happens if one lamp burns out? (Assume negligiblebhj hpdc+u( w)rk8u( 2 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 parallujktwr jmk 798 k:n)(kel to a constant voltage source, the power supplied by :tkkm8 7u9kk)j(nwr j 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 resiszc( s)m::oj+e*qvqds tance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parad:)j :(e o+ zqms*cvsqllel 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 rulbcf:;m ; g,ihsq9f wm3j7b8tqe.
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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 ss(b0+z*i; xfwssaw 5rule.
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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 ex (9ukf g946iv jz3ukbtample 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 examadk9f;d*y z o;ne+lj3ple 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 vaq)qhw wx82ajhju )8*/r auzb-fw0t3slid 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 identinwf9rqh3a1h(oes) *g 8mpz 6scal storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the combination wilwg f3*aq1mo s n)(ph8e6zshr9l 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 :8y ;bor .;idsd)r /wnodsu.lin series ("+" to "-" to "-" to "+"), and place them in a circuit, the combinatu.o r)r 8d.soswddl/:biy;n ;ion 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 b ad t62o9gl5kh7yt28pkh k+lkatteries together in parallel, and place them in a circuit, the combinaok9d8lky27+6p5g ahtl2k k thtion 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 serieso((2b gs z.0, avaqanp 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 serg ;x0uyo o36: g,vgvsuies, the equivalent capacitance of the comvg o0v3og;u y6x g:us,bination 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 t-clsb ,5e z,95s rfphno a battery. If a total char9hsr55-,b,cls pfe znge 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 capacitors are conne+*ltis(i xo0bc7pz ( ,osg:v kcted 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 connects/a 5udquh5 3yy6;q jzgbu9( kn6-lkhed in parallel, the equivalent capacitance of the combination i(u uh3n-5qd/a zu6g9b6l kh yqy jk;s5ncreases.

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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 conntl*;vdsu 3s - 7xl 7t2x:mdimsected in parallel to a battery. If a total charge of Q flows-sl:m3tmsd*7u72iv ls xx;t d 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 quantitbb qcec18m o.;y 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,1 h0w7aakufa ideal battery of constant terminal voltage. At the moment contact is made with tha,uaf 017w akhe 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 battery of c ymico6t5 +oya jy 1du0x/y4h+onstant terminal voltage. At the moment contact is made with the bato +6u0hyymoi+ c5tyadj y1/x4tery, 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 capacitnk2igu v)4z,v eyo6ylzf;;5h or are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage across the resistor)zv hz 4n6vyi2 u loe;g5,;fyk 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 should p3s+ x3rrj ntw3 fyq/lyti 5sk,ln-l.ee*) q(

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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 o 0 l+b,jpfds9ru*a5m 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 p s(da1yt qaix/.g1u5blacing an ammeter in a circuit consisting of one resistor and one battery. (y5 bq/ai xts.1a1gud 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 amvsq 7:ic4-:pzb3q j ptmeter'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, ccow7kd dw;k/)gxy9 2 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 voltmete8:6/ 6wy 4qhwe8zevd j4oivayr'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. du9tsuh 6m5p9d.rx v5 What happens to the total curdu sdvt 6 pu55h9rm.x9rent 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 ammete)t(v d2krdb9mm13m: u:tcr eor, and a voltmeter is placed )cb(vt :ur 2krmd tmo913:emd in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value 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 seriegt cex1fif3 . hy+d+qc7*z* qgs with an ammeter, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter re*dqx fi1+7 fy*3.g+ c zthgqceading, 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.n/mfzdts) 5i4 l;da0/* 3u9w*n/rgy tutuay l0, 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, e9zp- 024ffbrq kuj rk q)s6(n12, 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 12,1z,n6i.d(gx 9 dhc cjb 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 u8-,2tvre8( u7iv1t+p aoa ta q2x wfrinto a series 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 c(w u1i-lsj)c5f q0h trombination 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 parahoy88 d8jdxb6adq5 t2 llel 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 combite1p2bf e8 *4wfd(ulvnbl)vy. hg +l4nation 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 clo2.wrylw 2hi x7 ajao() v6j,ombination 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 appli p-v-4:acizxfn/zxf5jyx29 koj x/0 oances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the sj:zx94 fpfa//x 0-z v oxnocjx5i2y k-ame 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 nu8f z;cvz5 av3f6b o(urmber of 100-W light bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A circuit breakf f3 8(v; 6cuzoarz5bver?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.04bjbj f h,gzu0c9,bt q fe+g :;5qb:ih $\Omega$ 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 30 :)li:we..*6bo +rms rwfq j xoli*pv($\Omega$ 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 :7foopiydz+-s m(ch /.0, 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 and 9ndk .q okv-n/:a;wdu3 .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 5.0fs k7ihcz:)4ywt,j jeiykuz 9::79ug 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 5.0k3dwpj (.8csi 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 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 w vj : ,er /wxux6/bw4yhcegir4ly:5 -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 throug3fl2issk o*pavy xf+ +s1yj :ed lr2)6h $R_2$, 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 ai. njeeuw43 vu2c n it p4ve73e(m9x: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. 19-4, determine the cna+a jo y*5y-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 t doe tn9p4p*m4he 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 F;hllg3.eobk ( io1tal )e4d 7ip4(rkmig. 19-4, determine the current in the 4 $\Omega$ resistor.


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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of ppy01ppgc yj ,e3o20jcjq;no.oint 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 potentias9 c z(/ o38d(mpail8ng 7d pgxot0ln/l of point 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 point C in Fig. 19-5?1benylm cyq6 jyql ; v: ef71cg2(ny+;


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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 Fz7.s)9 qu umlo;jdev.ms- (ln1yc7 s aig. 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 8;wypnd) r21lbe m rf*point A to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the 78uy /6:dzk*n8av m+peixs u3rmme)0q $\Omega$ 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 8jjh o-.p64 4to*jdxic $\Omega$ 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:d-g au.y9vr s 0 jz.;ff5(;ip)c hnmve3mdsg 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 eda0(bgv/z 1 u;l p g+aoxrz;0$\Omega$ 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 inx.*it 5v/qxkp ,oca)b6abq 8 q 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 connecting the upper left and lp8z.c,o; ykmix7 h/ ajower left cor7k xcjpahy.,z8i / om;ners?

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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 art6,,si -lm.mbe2v nvbe connected in series. The equivalent capacitance of this combinati 2.e,smv,bm6n-btivlon 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 acrossxo5i h,.zexr1z 4 fut, a 12.0-V battxf1 ztx ir45,,huo z.eery. How 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, angl9l *ae m/j:id 50.0 mF capacitors are connected in series across a 12.0-V battery. What is the potential difference across the 10.0-mF cap/9ai mle j:gl*acitor?

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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 7* sk/2 fpse-dlxba3l connected in series across a 3.0-V battery. What is the voltage across the 1.0-mF capasfk-sd exl3 l/ap*72bcitor?

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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-mFe1.n p7 n2ucdm 0tu1gskr(c9k capacitor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF .euk1k7c0n29np tscmr( u g d1capacitor?

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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 cl0u -u/hh5.6 k hlkfqnapacitors are connected in parallel across a 24-V battery. How much energy is stored in this combination when tkl l. 0-uk/hhn q5ufh6he 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 a3obs txv (,sf.oo(4 rvnd 20 mF are connected in parallel, and this pair is then connected in serit sfb.o4(xv,ovr3 so(es with a 30-mF capacitor. 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 connecter 3lsroebtg0.zzlfp)evvn+3t :8 e 0.d in parallel. The combination is then connected in series with a 1o.zz tvlvl) en3g+00s3tp: ef. rr8eb2.0-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 zwk6t2,ujso wj7 -1bf mF are connected in parallel. The combination is then connected in series with a 12.0-V batf wbojsw1k 276t-ju,z tery and a 14.0-mF capacitor. What is the charge on the 6.00-mF capacitor?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8aoi-wx7 nu obbbzp6, 6)45op,aysz q ).00 mF are connected in parallel. The combination is then connected in series with a 12ao5-,uy wqobi7o nbsbp4z6 )6 )x az,p.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 charged throughdq *vokh7p1me jdyr .-i .:fp8 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 d198cf :oef0 y-/-eghm gruuathrough 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 iqq6jhz1*;k*vrv c xlkj4 - qf0n series with a 0.50-mF capacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is the change in volc*r4*-zj vkql 0qkhv1; qxf6 jtage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is charged to 6.0-V. It is then connected in series wit zi.tl r2s9bz:h a 3.0i z2zb.sl:t9r $M\Omega$ 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 internh gpgt7*2b dz7al 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 resistan8aartk av ttmp0 5.ne45i 88rice 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 resiv a-vn8vwzf4)ivo 6,cstance 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(ot;5g jvv-mq 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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