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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: 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 terminals of a battez/ ,mj r a0(dyjg2hl*zry, when no current flows to an exterld(yr*ha , jz/z0m gj2nal 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 (-09 o.kap;yppxgsvkf.l e.tbetween the terminals of a battery, when current flows to aef9skpt 0ao-.;.v k (xp.g lypn external circuit, is referred to as the

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resisiw.p 4 frfliy,9d/ i(etors 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 connectei;79 ec.nx5dcua;m q)d.czs m d 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 /fr k as5)ys(sbattery. If the current of 12 A flows from the battery, how much current flows thro (ss ayr)f5ks/ugh 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 ingwa mhkdcy 6zf 9ihm4 8 awp8f.hf:2j8(u;6cb series to a 12-V battery. What is the 2: agfj6a4(c fp m d6mk;z hy988wu8hwhibfc.voltage 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 serz bf4gt8, cs b+,qwhq98mbn6h;ucg(gies to a constant voltage source, the power supplied by th8tw8 +gh4sc(u6;9qb,hz bg b c,gfmnqe 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 p b+/m1,xnrz +pkq cb3parallel 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 parallel, we can be certain thw5e*yd)dmsf7i a 6de 8(8ch dqat

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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 parallel to a 12-V batterynir9(9jn. p; payfmv+mr*bef* 82id8p1 wqam. What is the voltage of any v nm*ai8e*jy nb a98dq (f2wpppmm; .+f1r9irone 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 in paralljq r x9-mibiz :xtz vc- j8z9iu.ff2)f7eqy:7el to a battery. If the current of 12 A flows from tij f yi8fz qt)jceb-m: fu9z-97x.7z2rv qx:i he 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 o,+*:8 a :y-ortqh qzpw0) tecltmnee )f Christmas tree lights are connected in parallel. What happenepwql:,er)a)me* tyz+ o c0tt:h 8q-ns if one lamp 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 ,nwwj)s;p7;j8yf*k bnm3 o(ktm-oxn , the power suppl os3(pkj wwx nmo,j;nkn-tym*8);7 f bied 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 resistorsfbp0p w:vz5:d , each of resistance R. The maximum power each can dissipd :b w0pvz5f:pate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two. What is the maximum power this network can 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 juncti,hvw;)y6jy ;nlqa t*mbc 8q )yon 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 ruz*1vu )x.di2p oc.osl le.
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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 exampleu6m9qz ij go2oe8ibki0 xc890 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 examptxlft q )ob:pdf*f0 58le 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 si/iufh 668zfng1boe8 q(n3u 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 "-" toe9 e nsz1q7(zl.uqw 0d "+" to "-"), andz0 e9qu . nwd1z(seq7l 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 identical storage batteries together in series ("+" to "- ss kqbll./2x8" to "-" to "+"), and place them in a cb82lxq.s s/lk ircuit, the combination will provide

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you connect two identical storage bat*f2gh 3yh8hsw teries together in parallel, and place them in a cihyg3f h 28swh*rcuit, the combination 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 series to a batterqzdnk8o *4wgjjsnsl/h 33 b+( y,

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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 conn 9 fgv:q vryl4 cbvm,qyz7b0*9ected in series, the equivalent capacitance of the combination in9fmvy9bcrz4g7 ql,vbq:*0 yvcreases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitors are connected in series to a battery. If a jv2:b3fk7hb c1g v8ku total charge of Q flows from the batg k37vfv2cj1:b ukh8btery, 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 connected in parallel to a battol:;y3(bw kdkz2 (xcmery,

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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 connectnih5(jf+jy4c ly mpv-ax1 6j+ ed in parallel, the equivalent capacitance of 4 6hf yj+l( apc+n-51jvxmj yithe 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 a battercxkas0 .atnu(u,-/.yx z wr+j y. If a total cw(ka -.+ /s,uarzuny.0xc tjx harge of Q flows from the battery, how much charge does each capacitor carry?

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the unit for thekdxfe +lvx)as 45:* vt 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 idlglyqth267g68n d 9ubeal battery of constant terminal voltage. At the moment contact is made with the bg ylhq97bd6n 86 tu2glattery, 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 c r- ficx/2//9lhpgxuk y jr:2vonnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the bgl/ i/c 2rxu /f2xy-pv9rkhj:attery, 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 capacito9 6-xku pa:wwip d,v2rny(4hmr are connected in series to an ideal battery of constant terminal voltage. When this system reachy-rdp ,kha:v 6i w xnwu(p9m24es 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 shouldp g q:f+3+kqokll*9hq

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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 convertel7 s7si3 encc9d 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 obtade5mlfjn1 x3d4p ;pht79)v t fined by properly placing an ammeter in a circuit consisting of one resistor and one battery. As a )dte1fd;mpt5l p7 9nfjx43h v 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 ammeter's sh10svgs-m z(o7ig 8buxunt 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, )qng4 y ,u9xhyic/nr )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 s y bvf-13ukxw, 5fnsl/eries 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 voltmet*q*a7ym iezq r 7en6ca74)efcv8o-xo er across a resistor. What happens to the total current flowing in the cqa*7 8ovq 4 xyf7n6 coa mece)-7zi*erircuit 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 igghmaa6f d9:;e.a fz: n 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 c :aga .9ge6fdz;a:hfmomputes 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 series with an ammeter, and a voltmeter is /) n (/gkbxbtbg;0oqoplaced in parallel across the resistor only. This network is then connected to a battery. If onekq/gbot ) 0(bbgx/o; n 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, 5.0, aka9 1x,sg+0(kpmc kat nd 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,c. qlx0vg- 8fl84sfw v and 6.0 $\Omega$ are connected in series. A 12-V battery is connected to the combination. What is the current through the battery?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three resistors of 12, 12, akd 7zn /sr/2pqhe* )hand 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 o/qdb/: w 5*glpi7mf tvddv0f *f 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 intohpo 4l;up/2 zd a series 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 a p e53m*ki;b 6 3zqhl )vrios+krarallel 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 combsofsch8+.n654zq 4 w rs g*sjvination 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 combination +4r/e .dqvokvof 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 apx(kgdto3bpv 2f6 ( w6ipliances are connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at tkp vwf( (i3td6bx2 go6he 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 conu04 p*z8k8;yz;i7nv uyaamfe nect in parallel in a 120-V circuit without trippiyum *pu k8 0z;vn;if47ya 8zaeng 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 la *l6ygdax73 $\Omega$ 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,7tjj ate2n u5 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, 6.0, ay,wnzlx/k71d nd 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 ttnu.k2zfe67as-/1p qs v y8nw+y 8az9.0 $\Omega$ 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,loj yl7ua2jdv8)a77s0tz;m4d v 6 zmeu*jgv.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 9g3g4pze k; m7bl0;ib 0fhlc 4c.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. 1n,rev ,; i(mlad m+.- q9e*vrqqpsn,u9-2?


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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?


本题所包含的其它图片:

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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 throulezmt ba u . w(qq(j ))xx38.p6tqckz/gh $R_2$, 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 9 u:vqj7 u0-d uabj93s7imwup 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 currentpoh61fw 4rar9 ( j)qj39py7mss jyp0b 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 cure*hmx1 3s:m werent 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 0-- /9yxlb,qgbj hpnuthe 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 aa2iq*x8x-qydt1 1og:fy.gp 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 p ii29mi -vq.t5q6 qpdwh 2ul(3ep7lvof 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 d/e msjolym.r/-z l6of ta5a 91(9cy irelative 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 Fig.*. z5n/)t aw7dc +gncz,48utmnjvrsh 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 Bvwr 49bp1wlj2bj pbluv0,( exeqbsk .*9o2. w 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 63,i. z mn t-q*vh/bk:ujsgjf 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 s ja3 aj))iq;gin 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 in the zj80 db2.vo4r+4a:w,n0jh ftperz h c4 $\Omega$ 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 t za oabe604k+ ;us/unzajt2r:he 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 td8cvqufb2: eeyoo(3 :he 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 connectin.6b;5jz: pstsvf3 o)h nm.x36jvlpbqg the upper left and lower left corn5bpvn:t) mj.33pxs6o s v6jlb fhz. ;qers?

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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 sef j*ef8v+juihgx *,z9ries. The equivalent capacitance of this coj*fj gih9e xzu*,+8 vfmbination 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 seriet7 kjv+ jm/m5 i3/nnkzs across a 12.0-V battery. How much charge is sto +t7/nkjvzjk5nm/3m ired 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 connecte fj th1s:(:i bto-:wped in series across a 12.0-V battery.jbwst:tf(-i:1pe ho : 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 ar s*o(y),dvi az c jg313ad p-w7(hvnwhe connected in series across a 3.0-V battery. What d(3n(ah1 w)pg , o7dhv*yzwsvcij a3-is the 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 connected in series acros4gnm*zzt a* 6hj,ina q i/u-j/s a 3.0-V battery. What is the voltage across the 2/ jguii*a*zaqntmjn4-/ ,6 zh.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 f:j*2o g p1 0fjdksg;ua 24-V battery. How much energy is stored in this combination when the capacitors are fujgsof0:d*k12 f pujg ;lly 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+vtk/ 60rh s.tmus*(p*.sg zz wwe/t r in parallel, and this pair is then connected in series with a 30-mF capaci (e ht0mzt ssv.g+tw/rs /6*.wupzkr*tor. 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 combinatiozz,m+/kk(nw sly/ . kpn is then connected in series with a 12.0-V batt+ynk/p(wm/.z skzkl ,ery and a 14.0-mF capacitor. What is the equivalent capacitance?

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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two capacitors of 6.00 mF and 8.00 mF are co6hqtq( 8aw+/agcu2stn :x* b nnnected in parallel. The combination is then connected in se attg 6n x:+hbqnwcu8*a2q(s/ries with a 12.0-V battery 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 8.00 mF are connecte:;tbo6 cia-tk4hzua9 d in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-9at:iuk -bahzto6; 4c 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 char+fx 1nhel(+ tz jmb5l*ged 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 andcb0t .q /qe zbnbpx/)+4 f ssuf)/ej)k 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 connecluiv9fa5 58j* y ls.vlted in series with a 0.50-mF capacitor. The capacitor is initi5vs9jll.uai5vf* 8y lally uncharged. The RC combination is charged by a 9.0-V battery. What is the change in voltage between t = $RC$ and t = $3RC$?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mF capacitor is roa9wc ls)blw;stg z1 so(rs;.r8k/4charged to 6.0-V. It is then connected in series with a 3.;;1 )8b4s acslr . rwss9l w(gorkozt/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 intere pk vdfjs81(4;;bitbnal 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 r: rs(bkf*i5sia-yhm3 esistance 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 anhji* f+m: 0gr q0*oftz internal resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistance of 40. 2i zln/hofw s5.tlx680 $\Omega$ 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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