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习题练习：Physics Unit19: DC Circuits
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 作者: physics  发布日期: 2022-08-17 15:49    总分: 102分  得分: _____________

答题人: 游客未登录  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 curren 36(lasok0v.s: hghs j465pvaq0zi zct flows to an external circuit, is refe0q(0v6spg sjzhk:.v43 a5 ohil6as z crred 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 ozpx3kne4p6x12fqo f10zf bl+f a battery, when current flows to an external circuit, is refebx04xk 6ol1 pqp 2z e3nfff1z+rred 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 in serieeobz ;bpctp4.pg w5m hex: 81b4q-x6xs 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 conn)lkn8w qfn5r 7p,x xps/w(6bbected 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 yp0q :hyj8qvnwn 4-;ra battery. If the current of 12 A flows from the battery, how much current:n ny0y;48qr-pwqj vh 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 aqa0q*2zthb d;/o bwg1re connected in series to a 12-V battery. What is the vobo h* d0a/;qb g1zt2wqltage 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 (,nsjw;w uwbl/0-djw added in series to a constant voltage source, the power supplied bw-,w u dnlj0/j(sww; 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 +qnmfbvz x7p.w7 ec*: are connected 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 in parallel, we can vhva ezk :ay (r(drs./v, 2f16yaj/dibe 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 apdd k v9g:bs:v0.zuc/hz+ rx(z;yp c; 12-V battery. What is the voltage of any one of the resistors?c ;cx:/ rs p:;zu0zk.hpg dyvv9d+z b(

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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 pag2t5vo ( .m0zex .d1bxdjv41 rsbw;tlrallel to a battery. If the current of 12 A flows .vwmv1j stl;1et 5 xr g2dz0o4xb.(db 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 li+ p n9*ddk 3-/9heycke xd eyfpwq+.p6ghts are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance6dw pp9e /ed9hn*3e+yxk k.qpyc - +fd 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 fn0 q;o7m/3y rlagq6; xiin hr) yo71nadded in parallel to a constant voltage source, the power supplied by x0y3yfohn norli g qm1i/7;6a) 7;rqn 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 of resistance R ef*rt0yn db1;. The maximum power each can dissipate is fyb1;rn*dte0 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 juncthrjfa)dht2 ))xzj2o ta)h(7h ion 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.x9 rt)2 qo5gb5hccoi -
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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 isld avjp 35l6h)o9l:+ 2fyz 25ln zpnrs an 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 rule is an example oxc: 4:cx bmdwfv:/6pas-j 1en f

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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 for the circuit sho.i,qdvw959lf +.sxdfj wxcp +wn?


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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 storagzy kagrcvh1b9hpxf1n;l.8c(w 0v p 4 (e batteries together in series ("+" to "-" to "+" to "-"), and place them in a circuit, the com.g8 vcbrh1ac10y(kwz 4;pv l(xpf9hn bination 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 ("+" a vo m 815m dcz5yt5z+m-tud(dto "-" to "-" to "+"), and place them in a circuit, the co1t- ymoc 5mu5 + 5vmdzzd(a8tdmbination 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,x;a swd)tsd-e1,xs c parallel, and place them in a circuit, the combination will provide1dss-tw; a x,cse,)xd

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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 con n e6 o buysvq/3j5e.+2izupn/nected 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, tsvlo tl 8g7q iah-l)+;he equivalent capacitance of o-s ltl8gq +;h7v)ailthe 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 connected in series j2l mr4ecerc)exh f2mk)l29: to a battery. If a total charge of Q fl2)l:4eec)9cmjmxh 2rrekfl 2 ows 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 to a x)wd46a s zsaf tx,b. n;au7,nbattery,

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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 deo/ p448 tgxel3b;h q,1usdh connected in parallel, the equivalent capacitance of tb ges81eu 4d ,t34hq/ohlpxd;he 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 connecwx5 ywwrwx90 /(d b1mkted in parallel to a battery. If a total charge of Q flows from the battery, how mumy (k5w xdbwr9w0/ w1xch 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 quanti d jw75s )mzy(cm/0arpty 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 conneck ,x-vj(hst dr1,f/u oted in series to an ideal battery of constant terminal voltage. At the momrhou1v f,j /(s,t-dxkent contact is made with 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 connect02ylspja q0m/z t qx45:pxt0 zed in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resist40 0tma x5sxyzlt j0/ zppqq2:or 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 to49(ezzsyxi(i: )knr w cjj0 3k an ideal battery of constant terminal volkx yi40iwk(3)s:jzj9 rez(cn tage. 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 shoultitry+ qwe e; d+h h+m-9py+7vd

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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 ad j*s ylk;(jn5 2nd/tdudition 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 propa t a14iyi0-n 54o.bg.okdymg erly placing an ammeter in a circuit consistin.gk i-abn .dya4t04og51y imo g 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 ao8ey x 8ah3rum cf3o7sfc+6 b2was/+in ammeter's shunt resistance

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In order to construct a l.j2iirs2xcx;c3j; y 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 n-p yb5xp5 x6etfxz-9zep j.,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 placing a voltmeter acrossnx7 ctf0c5 8of (qtt;q a resistor. What happens to the 7ctt08ofxn5;cqt(q ftotal current flowing 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 h+arcp3+i*ajlcdqp. qe .0 5c fa3sm(wired in series with an ammeter, and a voltmeter is placed in parallel across both the resistor and the ammeter. This network is then placed across a battery. If one computes the value of the resistance by dividing the vlmd(c.fc+*jqhp5c3 ai0sqe .ap ar+3 oltmeter 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 ir8wp53 )qrwle s placed in parallel across the resistor only. This networr q)ww3erp 58lk 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, 3.0, 5.0, and 4.0 dr)w bugz4e*l(1u ) jd$\Omega$ 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(h b2 w7vad kv5(zld7ib b0;xh, 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,xzzfl.j; 8yy3 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 szvko8e 7q.6s 3yom n7ieries 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 of a 3s+g lwd,u /n):9pvq at.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 irxbq4)v r1i* ynto a parallel combination of 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel comw32j *ihyv+f+ g6eu bm 0:henzbination 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 coekfjnzw:f6si 3*tu:( mbination 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 120-V circui gw9sxcfgc 920t: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated xs9cc2f 9g gw0at 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 p7aqnn m3.rwf .-9z ontv42klx3n v8 slight bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A c7apzn3ks3xv-w4f oql9n n 8 rt..v 2nmircuit 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 2.0jgp mmlj :--;e $\Omega$ 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 3fia vmu3h3c9 -0 $\Omega$ 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, ani +m46u(r:)yx ty suxtd 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 9.0jr7tw fuy ,0)v h51cu6agba .w $\Omega$ 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 c+5vz4tl 5qjb: pufpzxi:b2- 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 atn(j/ zlyquf1*,h ;s xh a4; amuu72iend 9.0 $\Omega$ are connected in parallel. A 4.0 $\Omega$ resistor is then connected in series with the parallel combination. A 6.0-V battery is then connected to the series-parallel combination. What is the current through the 9.0 $\Omega$ resistor?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.0 $\Omega$ resistor is connected in parallel with a 6.0 $\Omega$ resistor. This combination is connected in series with a 4.0 $\Omega$ resistor. The resistors are connected to a 12-volt battery. How much power is dissipated in the 3.0 $\Omega$ resistor?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the circuit in Fig. 19-2:k uqnbz7k4h+d+ d6o k?


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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 through0d7t+l f m od3g1)c5aq ynk.oq $R_2$, 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 resisfkpri ;jevf,tt*:.d* c0srq )tance 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 curren)nhg p(l+ wxf+t 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 thee(n:t .xp/tefj0 3kjqkvp) lq;.ma)q 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 +o7sr1oeu.s j, 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 of point A relative to point C n .p8xbrk3oulr -g10r 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 point C in j ido*n1q3 p:5tine.nFig. 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 mghu0z:, . c .7axd6 sq dod;to6okcn3of point D relative 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 .0luqhd q0r(.xm5;lbgw 0yx obattery 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 v* eyd tis5cpg/fxd/8gn ,/)kpoint 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 i4z/r1cd l8ld77 2lsnzb*by gln 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 q c+d01ppkl-y in 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 i cty 5 oexdl6:y4tv7;an the 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 .y or3rrabsh qld70raw*+ ,*y $\Omega$ 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 y cn.f ly7b3 nke652(( bmxoeuthe 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 connecting the upper leftj:t(i7m wgcq/ and lower left cornerj(t7/c g:qi wms?

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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 ser x ycoh/;p5p1lr mw3z/kzs6c.ies. The equivalent capacitance of this combinatilccsp r/wz 6y moh .x153z;kp/on 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--zz-zkepv qd7 .z5 na.0-V battery. How much charge is stored in the 5.00-mF cazevz- z. dn-7zqkp- 5apacitor?

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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 1 9 gncvcn)*09e)kpc de2.0-V battery. What is the potential difference across the 10.0-mF capacitodc0ekcnvc9 e)*9pn g )r?

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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 se;d ibx,(4 ns- d4 opapuz,uv9yries across a 3.0-V battery. What is the volt,;uds, d9u( xib onypp-44zvaage 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 across a 3.0- en)ij3lk,9 ssV battery. What is the volnelj9k s),3sitage 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 pyg qj7qe31defqz 4,h ,arallel across a 24-V battery. How much energy is stored in this combination when the capacitorsq7qqf h e,z3g,yedj41 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 cdc)mp0kd m (t+onnected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capac+0)m pmk t(cdditance 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 combination m( 8kypx9qy*x is then connected in serie*p98 y(m kqyxxs 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 aai,dlce9f( +m re connected in parallel. The combination is then connected in series with a9(f,e +al dmci 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 m)dvq68x oi7qx F and 8.00 mF are connected in parallel. The combination is the6dx)qi 8xv7o qn 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 charged throu10sekr cvs;4o ag2fl7gh 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 1yg 8aaxm-,,wbrao+ztt1w7 4 egd:y jV 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 fdt ri)nz ;5or.o/nz ,connected in series with a 0.50-mF capacitor. The capacitor is ntz z;rn).5i/ door, finitially 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 b 8r a6-aqus;yconnected in series with a 3.r6;b sq uy8-aa0 $M\Omega$ 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 t/ et.nvd9ce2s; tfyr-,nyy3 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 czntr i.s/)d6a 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 resistance of 100 v sz6iww;d:7 7aj h4hojz; ws.$\Omega$ 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 ry+ afdt*l dl 2i:qppz.a k7 y,3u:9zkoesistance 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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