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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 o doz zi- k:ql8ly8:i*lf a battery, when no current flows to an external circuit, is re ol8d :iz8lkqy* -lzi:ferred 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 bat e)w6:kob6(vllr edlq0kg(hb(y8z4 mtery, when current flows to an external circuit(( g6)0:l(oe kbkb qdz46e8v hrywm ll, 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 avd7y9 hmy3 lsi33 b8o-te5rvire 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 conne xghiz . * 6v6/(/zbdlndpf*oocted 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 seri1+k.yo7e i+wccu9g auei wc.*es to a battery. If the current of 12 A flows from thce+weu+ 17 g yackuc.i*w9oi.e battery, how much current 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 at l+(zb)t ivq7re connected in series to a 12-V battery. What is the voltage acrosq(t 7b+itl) zvs 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 czgzs:/xh( v *a constant voltage source, the power supplied by the source :cz(hv s*zgx/

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more resistors are connected in parallel to a bat-fbi;ed/ si+v1su3 vhtery,

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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, rnxf *lshj:g-14d0u kk3s4hjwe 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 iif (q*plhy94cs the voltage of a fip9 q*lyc4(hny 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 ix7/y-ghna,af2 gy.a t n parallel to a battery. If the current of 12 A flows from the batt2a a/ n agyfhyg7x-t.,ery, 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 Chrismz3b dv r81ui -j ugc.w6u(az/tmas tree lights are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires le 6 m1wz gbz(dju8ar3 ./uciuv-ading 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 ard+.ik 3i2 gsbi)u :inie added in parallel to a constant voltage source, the power supplied by the sourcinb2u+i si.kd):i3g ie

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three identical resist0*h)5 as2 5uey0 o4bvbzxqu keors, each of resistance R. The maximum power each can dissipate 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 dissipas0*xy 55kv0) bqu euhe4zo a2bte?

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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Kirchhoff's junction rud4d;x .t-axlx le.
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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 + ygnby24.ono0i24q1p vw t zcrule.
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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 em:gg)h 8hs)g) /xal pb/xlyt;xample of

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Kirchhoff's junction7i: eitn6rogwvlc-e jz8)bv9 sh ) v6* 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 validapc p)h6b iiv4**i .gb 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 "-" tcftt ,rne1beo 7ai88rtb+7/l o "+" to "-"), and pl ,1to+/87nft 8rlbb7 eeacrtiace 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 togetheywvpw.hcs6)w9 p cq 1.z6mr2a r in series ("+" to "-" to "-"w6 6sr.v)wha12w.cqpcyp9z m to "+"), and place them in a circuit, 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 batteries together rlg z2v xc8)f7in parallel, and place them in a circuit)8xglfzr 72vc, 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 capacitor g.hh;ern;o-zc.er+uu*sv . p s are 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 cpat; sed6 azcims(*/5onnected in series, the equivalent capacitance of the combination increaaa;*z/sptesim 5c6 (d ses.

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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 total cha+hxf(p-s t7 aw *eha5v q:p(rarge of Q f-(qr7*( hva+5 fxpshw: atpae lows from the battery, how much charge does each capacitor carry?

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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected in parallel tobban/(bre h -1 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 capacit;c.k6i 0 zxo-. pbr/ nlblzy;mors are connected in parallel, the equivalent capacitance of the lkb/x;6yrc0z; zn -o.blm pi. 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 battery. If a totaq(twa(zu k2/v3vyb lxe8qy) z-iy+d7l charge of Q flows from the batter w (x(evkizyq2yt u8v +-3za) dblqy/7y, 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 quantity R9 /w(o ms7wfnl,:ul) g uznhc+C?

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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 c adoij/ v8o.i+onnected in series to an ideal battery of constant terminal voltage. At the moment contact is made withvd8+a .ij /oio 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 capacitor are conne25p98wsi kp uhcted in series to an ideal battery of constant terminal voltage. At thh8k29pu5i sw pe 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 b,xjzu2n :f:mkv*y vlx -pq 8 +tcrydyzx8+6+gattery of constant terminal voltage. When this system reaches its stea 8xzxj:y * m+lx gk-: ++vy6nz dftvy2cuq8,prdy-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;qi.p au q kwk66xyt81uld

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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 g 5tieta4e.g5a625trek, vzm xan*0 *tiz3be 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 ammeter in a circuit cons((is e16 3)h8zu if/4fbj8 gszwlhx vcisting of one resistor and one battery. As azhc6/1e4wzsfb) (sglj u(83i xhi f8v 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 shunt resista8h/ fw8 ehpwz1nce

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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 an ,. lcmhg 76fs7jlwu; voltmeter 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 resistaseu)j0pl1 -m pnce

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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 bo)f)kq;1dclgb /ohx 0:q4x yq y placing a voltmeter across a resistor. What happens to the total current flowin oxbx41o/;0yhq) l kcq) gqfd:g 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 i cas w n,7 p 1j9s,0n)2v0y6d.akjs4duqsfmzon series with an ammeter, and a voltmeter is placed in parallel across both the resiyjk4 6udd9,sfq w1so 7)00pnj,c as vs.anz2mstor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeteq2:8e o at-:.kxrvbolr, and a voltmeter is placed in parallel across the resistor only. This network is then connected to a battery. If one computes the value of the resistance by dividing the voltmeter reading by the ammeter readin or- tb lq:a:.vxeko82g, 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, g1vgd 4ddq)m:b731exx fpra23.0, 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, a(zogzq fk/97t,fs4;j fu8 h nmlc,u3 knd 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, tui 1orgscs f/q3 2+o,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 a serie fm7 9.mcm 6grfk4kdl(s combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 4.0 $\Omega$ resistor?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 14-A current flows into a series combination ib-0do65 me e iz ks2ugxpc79,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 pa;g1ny uoki/3 prallel 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 p6p e-oxmt r9v 4k8h1 kcysy5,hsi y:m+16qj jbarallel combination 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 ofih+,jwye+f9)y ym x-h 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 120-V circuit75n 2guyepq )a: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current woun ) 2pquye5a7gld 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 r+hj3uov)on 6q xv 7;gin parallel in a 120-V circuit without tripping a 20-A circuit breake)qguvox7 6hv;j rno+3r?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.02et n mf4(zqt+ $\Omega$ 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 an4ot f*p,b+xy mv)tvbxmb:qt85 md(n0d 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 0pr kuhbxsjr,/14g3,v ha k6b, 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 andxt )i-r4jyg;z 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 vg6t,) vdmf1j dxc*4 c9.0 $\Omega$ 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 9.0 nw z 7-*huq tl7g4k5bncp7lw/ $\Omega$ 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 thc v) / /rbw,phdqgkk98e 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 throuak4aoy5z) s7r.4ruc22xtdz l: hu1u fgh $R_2$, 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 the1ebu)*ef.a :yc+fcs c o,y u9t 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, determinmboer 5)ocfs oz3v(-0 e 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 Figff 9skc5oa)q; biwm1 2. 19-4, determine the current in the 3 $\Omega$ resistor.


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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For the circuit in Fig. 19-4, determine the current in t8iitlq* b,;bbhe 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 t+vii r:gvmn2:o 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 Bwx9mk)tty1r(j6 1 w4 hpl8 unl relative to point C in Fig. 19-5?


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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential of point D relative to point C in Fig. 19-4h emt k(y2,g9 oo*q f1 .alteij19grk5?


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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 baikq ,;9sr;5dkq u 1bwjttery 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 Fig. 11)durm 4-(4h2fgr x ac ,ssawi9-5?


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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 7c)o :okmw3e 1n,o9 y1j+pm djzew:x0s $\Omega$ 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 thm h cf 1zez)y8 /p1v.axzh*vk-e 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 wq(7ty:.qq sw*ilu *, pvlx ggrm+e98the 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 wx;v c;fcy94d z-,awr)rv y5x12 $\Omega$ 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 uhk v *.o*hm)f0ga.qs the 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire coydq b txzjn1./0h:, xcnnecting the upper left and lower left co /q,.0cj b1dxnyh xtz:rners?

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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 slbj qp2t8-0yvlrg-wj( mo8p) eries. The equivalent capacitance of this combinajbv8j2yo rl 08--)q(wgppltmtion 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 across a 12(mei23o/zi dfk; ,r ly.0-V battery.ifm/zy d ;k2elo,i 3(r 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, and 50.0 mF capacitors are connected in series across a 129vt1 z/ora-wr, g d vrs1xog8(.0-V battery. What iwggzod9x r/8vvra1-o1(rs,t s 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 capacitortb d+ba8 i,rlw k0/;j/bofvqq+*n t,g are connected in series across a 3.0-V battery. What is the voltage across the 1.0-mF l w,da;/b q8ok / q+ tr+*bnivf0jt,bgcapacitor?

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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 acc4j.tm+ )qfcth9g9zu o4 2c csross a 3.0-V battery. What is the voltage across the 2.0-mF ctsjgz4.q4o+ cfcc92t )c uh 9mapacitor?

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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 conh9fav;kb2pq)5lu .av,lgs : .o bkis( nected in parallel across a 24-V battery. How much energy is stored in this combination ;ia uk vqk(.hfl:.v5,sgb) ps ob2la9 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 paral50 )z-:sv mp1 2qsp):yt.d tfivf kfvclel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitav5p .p) 1qf :ftyim-sv)0 vts2d:kczfnce 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 arb;m .uqvj9bb,gyc* q .e connected in parallel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivalent capacyqq c*u, bbg;.9. jmbvitance?

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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 paralleap*h2i(o 6v5 ldgyj w5l. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is thgd* 5 a2yo5(lh6pvijw e 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 2nkvt02( mgaby49t la /n w(sxmF are connected in parallel. The combination is then connected in series with a 12.0-V baty2nwgm9 txsk( baanv20 4/( lttery 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 nh f6ldxz,vgc8c589vcharged 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 discharged through -lik j ikug2/9a $4.0 \times 10^{6} \; \Omega$ 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 capacitzy7kag )4rl x6or. The capacitor is initially uncharged. The RC combination is charged by a 9.0-V battery. 4 ga)zl7xr y6k 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 4zfhf*m (tdc,to 6.0-V. It is then connected in series with a 3.(hz, *f 4tcdmf0 $M\Omega$ 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 of7d7rn, e7krnil8w96e f,wz df 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 wm.8m,d dqm/aec i7*n24.0 $\Omega$. 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 resistance of 100 a u( 9vxssvlk7v9.2ws $\Omega$ 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 resistancehu3 uxm wk9e0a+b o)9z7nwy5r 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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