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习题练习：Physics Unit19: DC Circuits
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 作者: admin  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 46pqem wz4js :na(w oq9naud00yh7d2s)kw0xthe terminals of a battery, when no current flows to an external circuit, is referred to a 6 dp9( h0m040wa2wsdn :q s yozqjkxnwu74)eas the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential differenc o+sxaczu: hm8hr6tha*c 4f 36pw4-rje between the terminals of a battery, when current flows to an external circuit, is referred to a cj:hz6hrpcsxa4mtw4f h*ru83- o6 +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 resis*nli8y 9eegoqe97c*2sfu v+ ltors 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 connected in se1qkx( cv(v2c/87ap ev a yflw qf 1b+x9kt87kcries,

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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 connecyrw k+xp/m ls3pm 3di0:);ih7,ikidb ted in series to a battery. If the current of 12 A flows from the battery, how much cmb 7k3d ly:p0xs/),ipihkd+;iwm3 ri urrent flows through any one of the resistors?

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a 12-V battery. What is thp*4yhh26n tr4nnx ls yt) ))rhe 4sr nxl2*h)r) pyt4n6nh)htyvoltage across any one of the resistors?

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

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in series to a constant voltage syre-d e9 p)ux:9+(vp;n uojasource, the power supplied by the so)n:9v;da p yo( res ux+u-j9peurce

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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 7 jz; 0kikwpt4a 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 paravyrw/;n2 of 6allel, 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 connectea7 .( 1+wlkglr2xdt1r-e8-tmkscv c t d in parallel to a 12-V battery. What is the voltage of any o-v 1l .etk cswlrttkx7218drgc(a +m-ne 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 connecte3/uq 1s67r zpmgo*evod in parallel to a battery. If the current of 12 A flom pz3/1 uvr*q 7se6goows from the battery, how much current flows through any one of the resistors?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The lamps in a string of Christmas tree lights+ufafzf7; vvt)2ts1yc o .v wx2l0sa/ are connected in parallel. What happens if one fuo sy)2x/t1zv .7a w sla;vtv c0f2+flamp burns out? (Assume negligible 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 voltage source ofy 2k*f*moq7, the power supplied by the ymf7 qfo2ko* *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. Thoufbhl *(ey42e maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallelyeu2* l 4bfo(h 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 junc33.*v4azgi my u+xwc ption 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 rlc,-j)krk 1g gule.
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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 ovr+ sw,p)abdz x8t69l k d0a9p+u+azo f

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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 it8wpih s/t: j2l ghiea.a1pr8-*2deqs 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 equatio6qdjdo 6l1 mf;u u9j3ins 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 batteries together in series ("+" to "f,8hn ca y i+mfx14e2p-" to "+fc4i fynxp2e ,8h1ma+" to "-"), and place them in a circuit, the combination will provide

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two ir b:)p*pif7k bt7sor v6;+opedentical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the coeps: t+; 6op pkbfroir b)7*v7mbination 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, anxo xtq:f5 ce/1,q(py fd place them in a circuit, the combination will prov: 5xq f 1qc(f/etoypx,ide

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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 a3lysktlcal -s)bsqy b9pq*+ 9g+b0o1re connected 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 cona dzeztx *rr 6in.:7sjx,ip ;9nected in series, the equivalent capacitance of th9srjz7 6:*pte xz.ina xid; r,e 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 capacitors are connect 3+bvlzx:kl cml:yhx-p3y76 xed in series to a battery. If a total charge of Q flows frmyxy-xlvzl+:pb: 6c lxk3 h73om 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 connap;q/ima90*l2vcr amvx 0b v-ected 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 equivalentwlfcbn/( 4t2p capacitance of(bcw4 fn/ t2pl 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 capacitors are connected in parallel to ay6sb* -:gt hlhid0+i eup0oy7 battery. If a total charge of Q flows from the battery, 70i0: +yh*py d oithlu-gebs6how 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 r ;km.c a2fpp4the quantity 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 ideal battery of conjfjauz*(qg g)/ n7lo2stant terminal voltage. At the moment contact is made lg2f *j g 7/an)q(ojuzwith 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 capacif+3 l hnzrz, l0q6(z id2y4hmfw n41eqtor are connected in series to an ideal battery of constant terminal vo(q fwzn+ lz himezf41hqnyd rl2634, 0ltage. 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 iow2mderl3n 7)3ty 8enn series to an ideal battery of constant terminal voltage. When this system reache)2dlnrey t33m own78es 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 sho fwvmk0irgavr0 2g 0h ak47pja4u;m 6*uld

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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 3vpc,xxpny*qwdmb:(4 3 cnt8by 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 ammete29ta5h2 v zli/pz0 tlkidjl,-k1 t(vvr in a circuit consisting of one resistor and one battera(tl ivv9d k2vlkp/i5j z -t2zt1,l0hy. 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 resistao*4, izpywb2vnce 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 voltmete2upv(grv r3, wr 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 series resistance-;qet vk( tfc3(gbes-

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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 r )yzu.a1pjbn66k cm.fesistor. What happens to the total current flowing in the circuit as a result of this1cy6a.6 pj. ub)nmfzk 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 wiredg3 ut 0+t fvtfzy9i/h)bomjn (l,c,.t in series with an ammeter, and a voltmeter 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 reading by the ammet nht(jv0ug +ty9,mcoz. i/3)tff , tlber 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 voltmeter is placei uan*;z r;: e6j2kr3lbxd:jbd 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 voltmete:* 6nu3ji kb 2zjlar;de b:rx;r reading by the ammeter reading, the value obtained

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 20 $\Omega$ resistors are connected in series. What is the equivalent resistance?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four resistors of 12, 3.0, 5.0,gr .tc0cddk2 nqvkhn: 1k9 uz x jd:6ba(3m97i 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,ha*)s ( ifb5x:c j r,9teb3c53ux spia 12, 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, h7 1bp4g5zu kvp o:mg012, 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 a9mw 99v4y 4xs kbthx/g 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 seh lkjl n :.u3hs c0dqll:.pt/7a0ushmq7*ui 8ries 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 flows into a0m/giafj a 4-z 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 into a parallel combination o.gayayvbf4 net zg4t8cm74(z -pk+/ kf 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 combnk. bvzr+mp,93sz 4o kination 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 arogn 6fe.z +zn4tjb(r/yhk )3ue connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the s nk+ug)/j4e ob(3zyz.6 ftrhname 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 yootjxm +. 8shqgrzdwm1 *2o+); o piup7mcfp:6u can connect in parallel in a 120-gpodjch o;+:ptum1+ ). r6m *7qw2pxfzs o8imV circuit without tripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.06.; gbrwkxoz;q qpi0b kk86hvhj8 v2* $\Omega$ 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 andnwj7,m1 fo8t s 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.m* f1vgjbs pygrt4e9g3z 0kl:bb; ;y.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 aj-7koq4x 2sqgnlu75p nd 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 9.pqg ;+jarvp/a: l/.px0 $\Omega$ 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 a8fdvfq(kr*.p 3 jqfti*qc * +und 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 in Fig. 19-2?6+hknh ylfn w*n *4:d*b 7xoeq


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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 1)2nat 1n1ze n2,i tugeoy7 gt$R_2$, 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 resistand8ne-mqbnh 9.so+p : b,ze9bcce 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, detebx2lg7i*c*j a yy19s4 bf rct1bt l1u.rmine the current in the 1 $\Omega$ resistor.


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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in the 08r oyg*wi. q ,yzpg6i3 $\Omega$ 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 curreiv0efe/m(00r uo xee 6nt 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 ti -4m2f- (wudw8vik)hf,c wlco 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 rtwhosq x8f.u iqg51:3elative 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 F;p/w7sh qqxi) hjy9jdy i-i 10ig. 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 batteryhok7yq /lbo* r9;- wwblno gs*d .jlf6z*45zv 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 drop from point A to point B in Fi4ty27egis:3-aucf2ocub ed7g. 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 inmr*r 5;v;paew the 7 $\Omega$ resistor in Fig. 19-6.


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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the:1k v*ksalw* u 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 ;-: xvl g5qlae2kbu-gthe 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(v jgz*9fbf *r $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the bge e,l,r9/ul18 $\Omega$ 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 3g g goaha7o9x qauq(;+2:lnhwire connecting the upper left and lower left co+7og a:nu goqahx lhg(3a2 q;9rners?

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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 ij w g75zbwxjd0ywxmj2;6s q *yks09e 7n series. The equivalent capacitance of this combinati5 92 wyw0zs7jewx b*m; y7jkqjds6x 0gon 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 acro+zctuf tgd/du(k1 4e.ss a 12.0-V battery. How much charge is stored in the 5.00-mF capac dzcute.f4gt k/u+ (1ditor?

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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 p72 kze yuy3f0across a 12.0-V batteke3y027zyupf ry. What is the potential difference across the 10.0-mF capacitor?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across ax jpiv.jzjvl qt+iz u30(280o 3.0-V battery. What is theuz8+j.tv2 qi03lxvo(jiz 0p j 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 capacitor are c ydsy6as:kos; e)2m s*/fdg a5onnected in series across a 3.0-V battery. What is the voltage 2sgeyd:s*som ksdy 6)5a/; af 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 parle;1et6ky9 qrallel across a 24-V battery. How much ekt 1qry6 ee9l;nergy is stored in this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and this p7t *ig/24i krpc ryw-zoh0xk:air is then connected in series with a 30-mF capacitor. What is the equivalent capac2/ri gtr4:pw yk7x -zcki*o 0hitance 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 csp/rrzy k)rt 6g9 sp98ombination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equiv96pkr r zs8yps)9 rtg/alent 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 y+d.g : vcxy7bconnected 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 capacitor vyy bd.x+g7:c?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are connected in parallel l-i) ti/yc. a.nj*q -g 4.p2pkyakgka3na6vg. The combination is then connected in series with a 12.0-V battery and a 14.0-mFgn-3./qn kk.4gtyv*.aj-y aa apk2gpc 6 lii) 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 r)myf -15fobz3cha apx i6d):)qzur( 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 discptw (f9 ,o7m2ocdtn;nharged 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 connected in series with a 0.50-mF yg1umdy o q/e s(5:m9mcapacitor. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. What is th1d5g9u yo/ ( yseq:mmme 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. ;csi) ;gpi*fzk(b lu2 It is then connected in series with a 3 pfi*(ui;k)sblc 2;zg.0 $M\Omega$ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

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99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistance po-/ hz1fk 5suof 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 resi9gp5+g6g7vlw6hrs0 jw nm h3nstance 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 internalzpemo./ nsj4t y9px32 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 resistanv -jn s)u0bfb9ce 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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