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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: 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 currencbvs qpwza3) wverzto4)6ehh.62u 63t flows to an external circuit, is referred to as theqrs z cv)pwvz h )w2taoe 3ueb4h.3666

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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, gag), lm 6uh/vwhen current flows to an external cilmg )6/v,guh arcuit, 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 resistori8:: *kf ;spj5,we 0zgan8objc)ajkss are connected in series to a battery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connevq,iq*t0 x.tm cted in series,

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected in series to a battery. If tty-9kvykjuv o 41; a9txwg)4xhe current of 12 A flows from tyaku kx9)4y vt1 t4 j-v9;woxghe 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 are conneo:3yll 0hqx*;e m7xjycted in series to a 12-V battery. What is the xyl;7y xo*l0e hm j:q3voltage across any one of the resistors?

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You obtain a 100 $\Omega$ light bulb and a 50 $\Omega$ light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As more resistors are added in seriesnn4c14ddtzo 2 to a constant voltage source, the power supplitc1nn 4zdo24 ded 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 pofsv/ew1; iab*/ u ekc5o,v)srqs,eop* +z5xarallel 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, e(x iic:7h v(xwe 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 resistomm y/j7p3/m mxrs are connected in parallel to a 12-V battery. What is mjmmx/y/37pm the 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 ago)xe6h(cxmi) 40 mb;1fawoa0w u 7mire connected in parallel to a battery. If the current of 12 A flows from the battery, how much current flows through any one of ma746ao))mi ;cb1o0u i 0hm( wxx wegfthe 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 connecte wb7of) i*o,dr:wxp+md in parallel. What happens if one lamp burns out? (Assume neg,di o*7fwxbw:ro+pm) ligible 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 s2g vxt;4*vhdadded in parallel to a constant voltage source, the power suppliexs 4;d tg*h2vvd 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, each3 r ct,6pf8(rafinx5 o of resistance R. The maximum power each can dissipate is P. Two rc8,t xrpf3an(i5 f6o 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 junction ru3 8+f.t7- dhed6pb7es bvnq sqle.
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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 ruleoz6 s(u* h78v 4czmtxa*b o3 -rul8tbv.
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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 example qs bb/g/mu -o3ph9oe nf t759uof

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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 exam. 3w9zt4eybba,sj j*rple 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 for the circuw7e/hkfyo4gf 0:ai 2hit 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 ("*ep4cr2m ygg 5grp70m/cj c8y+" to "-" to "+" to "-"), and place them in a circuit, the combina rm8yec0gr*/m ycgp4g 5c2pj7tion 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 (z j+ 7)ha0me88awm gp7l3u pzp"+" to "-" to "-" to "+"), and place them in a circuit, the combination will prov 8hz7m8 a p7w)+peml3pua g0zjide

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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 idek ri8;g.gr eh8ntical storage batteries together in parallel, and place them in a circuit.gr8g h8;ri ek, 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 connec)j3aao*vqt3 spqy-z o)1ed1az js/ *xted 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 capacitap*+966fttlxnlo o u+ snce of th snl+*9 upo6t6tfxo +le 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 to a battery. If a tzux957d so7r7 nt7 dyyotal charge of Q flows from the battery, how much charge does each capacitor carryt579z7os ynudr 7xy7d?

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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 conne31td/xwcyax tt+ivi9 7pso06 gf33u 0n ohg9lcted 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 knt.5+i nxh9f3 ob rg/are connected in parallel, the equivalent capacitance of the cntk +5gxf 9b.3oh n/irombination increases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capacitoovx+ 1c gmar7 o,*gcg4rs are connected in parallel to a battery. If a total charge of Q flows from the battery, gagr*1xo+mv g ,4coc7how 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 9 utqr9iglvr af-rk.+2 85khlthe quantity RC?

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and a capacitor are connected in series to an ideal batterk-*pm70c wde ttg b9;vy of constant terminal b7w e;m gp *t9-vc0dtkvoltage. At the moment 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 connected in series to an idea 0yxt7dctwbdx;sa:f,zo6 r+- l battery of constant terminal voltage. At the moment contact is made with the battery,xbtyr7x6 d+awf; tc d,-:s z0o 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 capacm 1r2upg3 oeho )r;q:aitor are connected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, ur1raem3ho go:p;q2) 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 shouxi6* vaik8ou ,ld

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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 dc6:0 k +gs2e*kz7txet bfypm-nk/h*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 ammeter in a cia24 dcn(e dyx 1ep11olrcuit consis1x oyd12 (1lp ade4centing 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 dwg9agk az(z5h;j(a* an 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 voltmeter from a galvanometer, one normally wlmwy6f 81ah ,km, soi(ould

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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 vol4h8gs 2;6bq sizym* cntmeter'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 ac q*7cb /3 jbbtk)abdh-ross a resistor. What happens to the total current flowing in the ci-7*chd/ atb bb3 )jqkbrcuit 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 serjhv.mf9m- hr q;som yf5o m/w-.y)) ibies with an ammeter, and a voltmeter is placed in parallel across both the resistor and the.m -w5-yohm)mjsh yr of/i .mb) ;9fqv 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 ammeter,xkn;lbjxra v,t,t7 .4 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 resi.rbxv t4,ak lx7,j;ntstance 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 7 e 44 o7ig8)rmz1evfb.dbblw.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,z,q ),jbx hy/p1 *kabj 12, 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, and 6.e(j oxik -nos 7gp763n0 $\Omega$ 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 ofhna(2cj l00 cyjupy/svb 5 fe3hc p96* 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.n0jk*(g(q u y4ad 9meruu r:x 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 + c.m9h: gbf+tuy gjtp :be-8pof 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 combiltw*wo*t rp9oe *-a-zz+/au i nation 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 combinatg*qa -1 ch.5j tbwsulktse/56;f(su vion 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 circuit: 1200-W toaster k+.vh orh02k:a1wbc m, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would 21: kkahcovrm0. bwh+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 conk zh 2g3mbat1/nect in parallel in a 120-V circuit without tripping a 20-A circuit brea1z k /mhgab2t3ker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0whcy + 8ki87agqh n.i/+ua7cf $\Omega$ 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 nk76l 6utu6rjnd 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.hzeg *kfw1s -m6of0gt-vkw oa)fb 5 m8g ui30, 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,st 4 woest(/m 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 t;2 law 1qqiy29.0 $\Omega$ 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 an:yk9 mrr79kpqk0 c:yae2x4f lf++ny ad 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 xpp rx0j m 0j0zfh4t ),f-av)8aj xh:dFig. 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 throughky0(zlc0caqf d3r lmzkt( 4i-7 j0oe6 $R_2$, 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 ofbe b6 n0fan;s1z() qyw 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 current in th3x5slyo *n.m ze 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 82)dqvox9 afs 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 cur/ uz-iwprm *8ae-yne a: y(mqj5pml+(rent 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 poi44uptu1 m1wh7d1aq ih nt 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:wqk viu imkg15ply q8,++ce/ 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 C in 7 pv+d;8e7xx ng652x dxpwcpqFig. 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 7:esa)+xw+tq+w.nvmvll) mg 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 poia1) fkr tj;w0vnt 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 ;es)8cpx m ro/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 wt 38nf pw1c;y ;fpa*wthe 8 $\Omega$ resistor in Fig. 19-6.


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81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current in the.p )t*626bm)gm 4v gxjniuxpx 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 lk4z t o .v.-4ix-ysmebaxj/1$\Omega$ 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 thzq6c0unq 6:n he 18 $\Omega$ resistor in Fig. 19-7?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the solid wire connecting the upper left and lower lef qbogu fv -)4(cm.m2qtt cornersfm4v. u-g (tcqm2 )boq?

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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 series. The equaasy o+f3g5 9nivalent capacitance of thisfn ygoa +s9a35 combination 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 car1hj j iu7eefe//b/x 9pacitors are connected in series across a 12.0-V battery. How much charge is storefuib 7ehr/jjx1 e/9/ed 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 acro+9/oza1wvh *kggabti,z1 jh dr.z: s1ss a 12.0-V battery. What is the potential difference across i vshwz+:9z h1d1 kz.ragg1 ao*tjb /,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-mk2t kgd +t -6 *ttpx2wa1rjb1eF capacitor are connected in series across a 3.0-V battery. What is the vowt rj-2 6* bt 1ttpex1kdg+ka2ltage 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- *f9r 3/sz9d9rw clkv:ocsub-s 7,jsl V battery. What is the voltage across the 2d 9sss :/ sjc9- c3wobvl9 zr7rlkf*,u.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 cad;h zusk;q l:/ y(0xiupacitors are connected in parallel across a 24-V battery. How much energy is stored in this combinationky;shzi:d(l x/;qu 0u 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 2051i,s krj nhhskbd* ,u 61jq6u mF are connected in parallel, and this pair is then connected in series with a 30-mq61k6s usnhb,k1jj u hd,*i5rF 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 parallel. The comb0dj(p;w kibov po0 b75;e3mmaination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the equivap;w50i;o amjo( ebd7 kv bmp03lent 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 combinkbhi 3;yi9sduak3xq2ue/60o ation is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the charge o; odsu69 /e3k0bk u2i hiyaxq3n 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 paralj w fono+9d4a n ej,i.6fz+,ctlel. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. What is the voltage across the 6e4w 9oa ozinn., tcf,+jdf6+j.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 charge j. o61e5rgvaljr7dh .d 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 th ysq0 dzju:3j, )rc8qnrough 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 capaciegofnj(c/ lw(g /e;l2 :obu4ator. The capacitor is initially uncharged. The RC combinationeelbno( (jlc fw/2ug ; a/:og4 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 zst28orac9rd l k-dh1au( i5 v5oo/p;in series with a 3.orhos l 28vc(5tdk/ -z5oda; raup1i90 $M\Omega$ 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 internup 33 5y zyvvv-n4e0)o;n9eichk lzg+ al resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a milliammeter capable of reading up to 4.00 mA?

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100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has a coil with a resistance of 24.0 yv +qnjdaqobqg uo; gv )kqp0* xh-)1wt8m7+2 $\Omega$. 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 internap fqrwx6g18x5l resistance of 100 $\Omega$ and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?

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102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer with a coil resistance ofj2 i 0qd42oxsd jbv akd4pn ky7.)l-4z 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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总分:102分 及格:61.2分 时间:不限时
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