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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 bat)pc9h/uj6pt89lssd +;,ph( uni fk oq tery, when no current flows to apo6pinh/cjq;9 ,lus)+s 8kfu p thd(9n 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 a battery, when current flowsqr:15gvxzjm 1d e-/zs to an ex1j gre:xd5v1qz-mz /s ternal 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 resistors are connected uvi)vk/,tvzhs uii(/76sn m *, z5v4vgkir5 oin 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 series, ndzb-f (4fx4h

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors0 s:l/jii. vec73z:p:y ytnun hq1,xx are connected in series to a battery. If the current of 12 A flows from the battery, how much current flows through any one of the resistors1v .0 uyphqt zx :7l:nejyxn i3i:/s,c?

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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 +n 5 4qi7fm c;wgw )xyu0pd0wrthe voltage across any one of the5piwym7); ur+ q0nx0g4 fwwcd 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 seht xk0.e6; m x4w24f2k ayobksries to a constant voltage source, the power su0h6oxxm .4sf 4k a tkbk2;ye2wpplied 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 parallelibh 8h :09olh)lho h1p 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 61ebs g bcb7hdl8cp1 r)n* rp1parallel, 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 parallel to a 12-V battery. What ist;e*f5iz68 x8 uod 1.mglpykz the voltage of any one of the yufm1ped z8.lto8*6; xz g5kiresistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors arebqkqoj)o3c:y163r te connected in parallel to a battery. If the current oo)r b 1 33qq:yokjtc6ef 12 A flows 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 are connecb4b otrzvd/s2t- d46cted in parallel. What happens if one lamp burns out? (6scttv z4r o2bd4 b-/dAssume 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 addd)e7 s028cl4 sc8 fedge6php ped in parallel to a constant voltage source, the power supplied by the )cdes f8ld4pcp7 026p hges8e 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 resistors6q.za,8(fhgvf 7ubh.09mg 6t2ey5peaoairz , each of resistance R. The maximum power each can dissipate is P. Two of taa9vtb0p7 yh .82 fi,z 6f5ghermg(6u.z aqeo he 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 junctipkmq9e ija54b o./omm nto091on 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 loolk zn wuvrob 8vz o1s/;b8b :ial6(t)(p 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 an ext 4mdq hzo7lhlf* 3tv62t *mv2ample of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junctionsp/h+9r a* u k,jasg4gs60fx e rule 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 equations here is valid forf s 6 hlfui-+3lnb9va9e/lv9p 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 ide (9vn:ic lppku 5(ome:ntical storage batteries together in series ("+" to "-" to "+" to "-"), and place thkcme:(( ppvo9 n5ui: lem 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 batfa9c7df)zr c9 (vkb a0y+ fx/zteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combinatio9+c/dzcfb9( ) 0frvakxy7af zn 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 batterieulj 3 ;j( :pdi5tv1 xpf7khc:6d ao*txs together in parallel, and place them 3 jiax5p:: o fxdvjt*p7 chl1ktd6(u; in a circuit, 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 connecok+kr s ya-)g/ted 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 connected in series, the equivalent ca8v kgv6t5)whgpacitance of the cov k56g htgvw)8mbination 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 to a b,,w ssrmsww4 pu73:yg attery. If a total charge of Q flows from the basp,,s 7ruw ym:sgww43ttery, 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 arzfthfk/v,8ksh ; :)sm,(k waxe 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 capa6omsqlw6t8 i (citance of the combination incrolwqsim6 6( 8teases.

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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 battery. If a tota/4; s /+erztms k0 w5y5 mcjpbo4koib6l charge of Q flows from the battery, how 45t+wscbyi4 eok6z/ ;mkmp/j0rb s5omuch 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 RC(qhbepf r7a: (o2d.vs?

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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 capacit4a,zqu9m ksz/jzs o06or are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acrosz6 z amzjs9/qk s0,4uos 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 b1rt9kl6fsjnd m)nl 6 )attery of constant terminal voltage. At the moment contajdl)nfs 6mt9r1n k)l6ct 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 id6gmb:6jjxpe69d u .xn series to an ideal battery of constant terminal voltage. When this system reaches its steady-sj9.x6pgb :u mdxd66je tate, 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 shoulw n+ rgxdh 27:yy3h3dmd

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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 converteu 3me s9peyywm4;,p 8qd 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 ammah;3 t)n+9tclg. wpv pa6da3d eter in a circuit consisgv d3 an;d) .awtcth3pap+69lting of one resistor 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 ammeter's smu*v9 coc 292k: hkm-e gzsns2hunt 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 g 7ri yykoi2:xy q4q,w8alvanometer, 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 g4 lk01ypojc 6 x +i(bwcx4+dfof a voltmeter's series resistance

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A voltage reading is obtained by placing a voltmet* utk(o pxs3j 57wc;aqer across a resistor. What happens to the total current f wt*j73(5xqcu pos;ak lowing 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 vol*(4h)ksa7rdnrp(s/ub 8zr9fhk 2 dxftmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a ba d*b(zfp hrk94u72sas)8rkxd/(hnrf ttery. 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 series with an ammeter, and a voltmeter is placejo+29 axabdx5 q:kem2vgp (y4 d in parallel across the resistor only. This network is then connected to a battery. If one compu9 vbke 2pq2+x(amd:ja xo5yg4 tes 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,w*a d3grpv/rue f7l7r0us): d , -lzkv3, omrh 3.0, 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. *60gvwt:hx cx9g)i 1hfvogg: 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, anv: y.. 3*z-fm,m nkoqwi zfx-ad 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 7,j6w7xcnos+ orw ( :r 8nirykseries 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 i1wboix.ba n, lg9:ntqm p(b -.nto 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 parallel combination of 4.0 d: uz 98hpl6 w 6qef;lz7onn:z$\Omega$, 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 of a 48-6gyfd3daf f :o5-p :idmhdd.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 p *g59chk:(ccxo8l r2ff 7t smearallel combination of a 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistor. What current flows through the 4.0 $\Omega$ resistor?

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

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The following three appliances are connected to a 129nrv -(un zvif ecw):q,g ,f7z0-V circuit: 1200-W toaster, 650-W coffee p efrf:v,7wi ,nzq9(vnc)-uzg ot, and 600-W microwave. 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 light bulbs you c6 z0l:zh ik)kmx2o8f aan connect in parallel in a 120-Vi:zlk 8 fma20)kxh o6z 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 2.0z, u2;dco9 glfiks*f 1 $\Omega$ 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 u/4f faysj8f) 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.: czhz2c;l p rtn65jy*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 9.01-;+wrctmbf-sa r 1. xfpomn- $\Omega$ 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.*q0044rll+gwx7 b4icw zjw.0kgio qk0 $\Omega$ 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 o*;s 92prrbu eaa7c apc/ 6z)gand 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 cirayk7c i4akg;7 8at hp*cuit 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 througuis 8uaqahh 9(3,8bsgh $R_2$, 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 (gn ,s-ygtt(8rfbq 8r9n /h+c8u lvuy 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 curre6s)lx6sx u pd:nt 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 current9hake8hy24y;lyry x; 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. 19-40vd0tt(08nd :hs cd;+jb k4m p 4ymwfj, 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 ofrzz(:-l7mp n9 y8 yezbb/x/w j point A relative to point C in Fig. 19-5?


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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of poin* t8t-dw jk kvyyjw m7q8a08:nt 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+)08.nv , ajp1 1ln wqi9jlj yzkv4uma 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 u t6 ,mv*dxt7qFig. 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 a4 0*h9ebkq5qu7hp kndrop from 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 ,.d a/ crorpghpe)zd:+aq/(v 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 thezc;n- y+v 3 nlro3qojmes kh2 q)6.i(v 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 theygp3 xot(d xwe w5:3d3 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 ikynwlkw+ 21 fxp.6ck f:m/ty2n the 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in tj: g*5 rg7 m:utlun;;: ji-lde-ltppphe 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(hv(kig *p)qo solid wire connecting the upper left and lower left corhkp*q) (o ig(vners?

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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 con f5j +fqc;v)gnnected in series. The equivalent capacitance of this combina5+;)vcfqjgf ntion 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 caoi*.6 kaud4/o2 o/dqo2 mm nxp4l )lfppacitors are connected in series across a 12.0-V batterylud4*pm2odm4/o)6/flknpi .axq 2 o o. 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, andyr;ptj v gxt)4zx004 q 50.0 mF capacitors are connected in series across a 12.0-V battery. What is the potential differen44;0xtt x r)p0vjq zgyce 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 a 3.0yd12w 4*:0(b:fvrsma v4ipcaepw 4ze -V battery. Whe0b*4vmvp cwzwd srf e2yi:1:p a (a44at 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 capacia /)j(no4yvvu1bz q i1tor are connected in series across a 3.0-V battery. What is the voltage across the 2.0-mF capacito1nao 4u)j1 qv/zybv(ir?

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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 mvq7 )vk 2ejt2q9hg. ghF capacitors are connected in parallel across a 24-V battery. How gj)hvqq 9hkvg. 2e72tmuch energy 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 ar3 cn6 h:ccofv m62nnf+e connected in parallel, and this pair is then conn fcf:nh3co6+ 6n 2nmvcected in series 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 connected in paraf(ixx dl8(-1 kuu;ho zvq)a 1rllel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What;q(1zuf(ou 8h- )irlxkadvx 1 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 connecte/asm a)ypxt5h. q*/ylmoik* ( d 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 capacq *am xh5 a/l/i*pykoy(t)ms.itor?

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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 v/cnln; xz:ou0 v,ij 4are connected in parallel. The combination is then connected in series with a 12.0-,lo nuz;n j4civv/0:x 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 t e v7cl9wxy.tecuyb9l4n5i6up:+ o1t hrough 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 t p,j oeef5hbv-p00 9jfhrough 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 cwhzx 5e6g )j-6x 9.qv8cuvtn xapacitor. The capacitor is initiz5w6x9nvh) uxqgv-86jtxe.c ally 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 charged to 6.0-V. It is then connected in series wit(sh5 h9j :d1zc0wx1aycw9 ftr dq+ 1cyh a 3.0h:y d1jt( cx5hzsww11y a+d99rf qc0c $M\Omega$ 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 as)z6kvpjg3q :n 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 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 wi4pmlped lk67q8v h+ *vxwbr*0th a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal rg(hbc+if +lsm6ny i7h. ds zha,2+qswn5 v2n2esistance 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 rbv5uqn/a :hs.qoq62n c;7luu . wbbl0esistance 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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