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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 battery, when no cufh.n 75id:,qm-zradgb2za 3 qrrent flows to an5nagf: . a3zbm ,d2qqdih-rz 7 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 a8 opk/fq6z(nf/ z4cp, when current flows to an external circuit, is referred cq o64(8anpk zp //ffzto 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 t/6igpa(s0 u2 5 hqqg 1*avvhxao 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 connx ivg:-tp ul0;aq. ho)ected 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 se gtivbp0:u;.y r)de eu/,8 cblries to a battery. If the current of 12 A flows from the battery, how much current flov ) cygte,/euriu0.ldp;8 bb :ws 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 battery4azj*r hjram)/rv .h2. What is the voltage acv 4r/h jrzr .)jm*aa2hross 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 constan8x aveej ,wtjxnwcdl,g*:3* 0t voltage source, the power supplied by the ,gvtex0 aj 83ed, *:xn*c wwjlsource

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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 connected8mc i5c2ez sgdtr,5s( in parallel 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 t6c 5yde(9 pczin 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 are connected ixgzkc+,;;wgvf vvw a, zl:-* xn parallel to a 12-V battery. What is the + gxvvgx -,zk:zw wal*f;,vc;voltage of any one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in parallel to a ba9f+hdvo.icsv:9 zy )yeefi :8ttery. If the current of 12 A flows from the battery, how much cur zeec+.hy f8iv9svy i d:9fo):rent 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+lmv:mjl;dy)km dd a ;j-97nt in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires leada+m; nj97yjddtdmlmlk:)- v; ing 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 voltagerc5;b)4n woe p source, the power sue);or5wp4 cn bpplied 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 resistors, each o-i6gdpg qou u6t,v4s6 f resistance R. The maximum power each can dissipate is P. Two of the r6suvt6dq- gg46uiop ,esistors 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 juncy;yv9u*hrjq9 tion 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 rule. xwohwrru6;1bz6*ho 6
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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,y1d axh 83 dz0*0wrza x8*i7draf 2jickrrt. example of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction ru j3va9ty)d2npqk6/5 e 5hwjyw2p )r,s7u jxr cle 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 he* o4 ,gmp+yk x.msl-twoct0u1re 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 ide25mc*ruh+py j*+xk :z y oho;vntical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, *uo +;j5xp:+kmz2y*ryhc h vothe 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 seriesng ox ih1pgyqk(7r(9 rht t,7q6ouf 4) ("+" to "-" to "-" to "+"), and place them in a circuit, the combinatoto7ifh trpqr 174k g9(h nyq 6g,)ux(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 batteries together in parallel, and osv0 iz 9 xgca7 uhz*(t,vu:d9place them in ai hvo vx*0 (zuu t,dcg:7a99zs 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 a zxoj,gb:0l 5j(z je)bre 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 connected in2w ox p 8zl)7vge1-ymxw: o7hw series, the equivalent capacitance 8 wg72el -z:o1ypv ww)xmhxo 7of the 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(onp an, kirb0eh hzr:: 5h+3ped in series to a battery. If a total charge of Q flows from the battery, how much cpnohnrke z hh+ p ,(30r:i5ba:harge 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 aroe vc wh(wce 1a+h+)sh99rf k+e 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 equivalm/ rz)b8nv 6vcent capacitance of t)cvvzm rn6/b8he 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 capacgc/mhn-vd c8 tjl*()kitors are connected in parallel to a battery. If a total charge of Q flow)cctkml(/*8 n -vdjghs 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 quantid gy6s;urj 2onv38d .wj z)o0nty 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 ofx i, csyzc.7/zn9aa3p constant terminal voltage. At the moment contact is made with the battery, the volt,xaapn37/si .ccz 9zyage 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 ar 2sl 99+czpsp x9lv+noe connected in series to an ideal battery of constant terminal s9lvcx np9sp2+z+9o l voltage. At the moment contact is made with the battery, the voltage across the resistor is

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal bx2tsp:ezru29d )n 0:/m m9yme4 hzxuqattery of constant terminal 22m:uu9mnx s9/e:0dh)zmptxy eqz 4rvoltage. When this system reaches its steady-state, the voltage across the resistor is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal ammeter shoybesh9h 6 e)v2y j:k)mfn19eq 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 by the adv 2yj)h6)w 7coals(ff dition 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 1ns 9n+iiywx1 1ok-vz;xs/ pyby properly placing an ammeter in a circuit consisting of one resistor and one battexsiy- sw n1v;y9x1k+pni1/zo ry. 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 shux enx q-4jwa:fs o(rvuw34p ++nt 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 galvga 37/qjvo ),azfxcmb9rns .(anometer, 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;/q9q cgk5euf of 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 placc mq8ko e4(*jho t4*xlm2ui1 bing a voltmeter across a resistor. What happens to the total current flowing in the circuitcqkmhutjmei*8obl ox4* 142( 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 seriez sl)v+fvg1qdj3t/ j)s with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is d1/ q v3+)j jvsfzg)tlthen 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 series with an ammeter, and a volb 6a-5h v.chqytmeter is placed in parallel across the reavy-5ch6.hqb sistor 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 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, 3hxzp: silc)j; m4b j54.0, 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 6mwo/l d0m- yz3bq/:ap.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, and fzqvc9tb5+t1 4 tx xhb b1v74:(jfqru1ny5wp 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 ofn-lq, q a9amx 2*p4zk jzmj ge6o8bi/9 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 combinatik5y 5sopnm1(o/ktdgn0 wb 6d 5on 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 combinati/6uz .o7 orv9/e niqhoon 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 of a yoc4w1 b(b qr;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 of a 43mdjch.61t9zg po+yv.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 120-V circuit: 1200521-oq ohcgoic9 f*n i-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same tigch q-5o 91fconio *2ime 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 connect in parallel inn0uqfeob 3j4 l9 3ox:b a 120-V circuit without tripping a 20-A cir :0u elob9o34qxfjb3n cuit 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)q)6/y y0tzp:u ctezd. xu)cd $\Omega$ resistor connected in series with 4.0 $\Omega$ resistor is connected in parallel with a 3.0 $\Omega$ resistor. What is the equivalent resistance?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 4.0 $\Omega$ resistors are connected in parallel, and this combination is connected in series with
3.1 W. What is the effective resistance of this combination?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0 $\Omega$ resistor is in series with a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What is the equivalent resistance of this combination?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 15 a/,im 4ic7)k1v 4rs,.d ppsjo nfqu -ednd 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, mm*:) a svb13xw*ob dyand 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.;a fgax1 r4e7q0 $\Omega$ 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 5.0n(9* jx +trye;sa3bf r 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 5.0 anq juhn0shtt+ ;d6w4 g5d 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 re t) d*jvp3f2rusistance of the circuit 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 througv- - ,r mxb,dnpne-1hrh $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fige r1h br3ku v1*6azz8i. 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 curv3rfy 2x+*r zj jp:,emrent 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 3gx 3 1bjl2oax: $\Omega$ 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, determinpuuv ehvka5 e/8v+ kr1sj: )f5e 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 poinhmti2:3bct3 . bbj,zyt 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 point B relative to poin8o,ttta ve061l*3 a r.i wymyn jk.tm*t 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 re8n, w8irx+1njix gzq. lative 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 thh3nx0 -l 1vfmkidu31vie e /m5e4cnv8 e battery 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 *mrwi x m yhg(3y4 d 2xi:-/q,qdehq 5tf(;ntvfrom 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 currenq 7u jow,(cp8j(nu4fb usqm32t in 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 vppai f/ t;/m*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 th2qfrdl 8b+ e3rfx 5(bhe 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 92j dpfn3,lix$\Omega$ 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 thgm xkt bk2v-x a;nx/-ov 5yp5:yaz0 m+e 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 wiv1bsfor4lg9k5; , e yvre connecting the upper left and lower left cornerslgf; b4yo,15vr ek9 vs?

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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 cgep5vyxg*e+7l6l sy63 r,cp, zvm *j ponnected in series. The equivalent capacitance of this combincg ,v yel6vyemlsx3pg*5*7r+6p jzp,ation 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 czhw/nk0):xt b apacitors are connected in series across a 12.0-V battery. How much charge is stored in th:x tk)n/ z0bwhe 5.00-mF capacitor?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.00 mF, 10.0 mF, and 50.0 mF capacitors are connected in seri9o gn-pkm .4uges across a 12.0-V battery. What is the potential differenuokmpgg4 9n-. ce 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 connecq 1p3djw5t:w ypg+yfdig- z78 ted in series across a 3.0-V battery. What is the voltage across the 1.0- y -pt8wgwp3ygf d71:5zjd q+imF 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 across a 3.0-V batter lwkq +;h2mijp)x0f 3cy. What is the vo2qji xwfl+hp)m ;k30cltage 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 parallel across 5 h;;bxk v-yb)dgrx 4jl;hr4ka 24-V battery. How much energy is stored in this combbkb ;4rhv l 4 ;jkr5hx)-dgxy;ination 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 thje43w 4 b,t(gnxcf x7qis pair is then connectefj ec4gb,(3qtx n7xw4d 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 ihvkje/* n( j+rn parallel. The combination is then connected in (vre *k+jj nh/series with a 12.0-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 mF are connected in parallel. The combinatio.sb5 sr-1 w /8rur2crhp 1z 5qhwcr4pzn is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge /r b4u8qrhzp s5cr-wcwshr z .r15 p21on 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 connected in n:kmnpkk f er *m1xyw9v+t,8aerf- 19parallel. The combination is 9mv1wfa p9er,nk-8 ek+ mf*x1tk :nyrthen connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6.00-mF capacitor?

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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 chargedkq h2x6*gcdki+n )4fz w* xsu7 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 chl1lh fh e ri dcs31s *f0yh.q(q0lt)3aarged to 12 V and then discharged through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capa3f))z+cb a dnvcitor. The capacitor is initially uncharged. The)nb dc)z3af v+ 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 co4 ,wz9yw g ljn*o;ha1e eub.s(nnected in series with a 3 n4.hgl es1yjuwabw(z*, eo;9 .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 resiste7cvs11 ea tku3v0)twance 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 resistance of 24.0 *c5gwfcfh4q- ei6;z b$\Omega$. 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 qbkh0gk-bm1xvv wt5r-zehm / 6k(d-4internal 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 anceiaoe+ ,/z , coil resistance 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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