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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 betv v 2yph/u.hj 4hd9d6qdf,.xz ween the terminals of a battery, when no current flows to an external circuit, is referredzduhd.xv6y/24fq9v d , h.pjh to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battery, when cuz;a;kjs: c c1prrent flows to an external circuit, is referred to 1:jpzcs ck;a;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 to a ba/j*i tvf35 lujttery

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When resistors are connected idp+o 0i5 x yukgzok999n 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 bat jm6m p+j-iq.ptery. If the current of 12 A flows from the battery, how much cuqj -mj p+ip6m.rrent 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 connected in seshb je;yw6 x95 (mt:meries to a 12-V battery. What is the voltage across6( w9me; bje5thymx:s 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 constant *o2a3obb6 uxul8lch4 voltage source, the power supplied b ob6*uc4l23lao ub8xh y 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 parallew ,i glfi1gbx80 6cg4xk*2x-.cxt-dakhn - gh l 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 be certain tha mm6dbw 1;hqht*k*)((i;erppacfo6b t

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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 paralq + :jhwn, *))mt5vpvlmozfw1xqmyne .1( t b+lel to a 12-V battery. What is the voltage of any one of t 1qy:.omjx,)t efn v 1l5(+qv)pbhm+*nwwzt m he 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 connect2l aamma4kwx6e,+. v sxtmn 5d5da/; hed in parallel to a battery. If the current of 12 A flows from thedad5 ;mae4 a+,nwm 5 26hkm/x.vlasxt 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 lightsjlw7qw/,8wv(cq .(g pr2fom j- zxl5k are connected in parallel. What happens if one lamp burns out? (Assume negligible resistance in the wires,og lq2 k7j8wr(m5wwzx/vq-fcj( lp . 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 added in parallel to a constant volta.yxo o,cw )3zoge source, the power sup3,woxooc )z.y plied 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 of resist4vo,).uatzqqvs . k x/*f(pig ance R. The maximum power each can dissipate is P. Two of the resistors vaxgo.tf *,q4 i(zu vq )pk.s/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 rul/3f qnh d9gv9ye.
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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.o :,ijudbyvdz;) z2 g1
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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 ej4wu 924 /qxy7d)j s1 mqgzwhixample 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 ot6+9rwt3:bpscbg, vcb- i -jff

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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 k qt u t0e e3 bzzkn6e-prdgw*3u34*w-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 ide0p) ll0 oka-gbntical storage batteries together in series ("+" to "-" to "+" to "-"), and place them in a c lbk0l)g0a-p oircuit, 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 battfxt l)tezy85c 0: umb; 1oeiu6eries together in series ("+" to "-" to "-" to "+"), and place them in a circuit,o)8m1;lx 6: eutci5f 0tz eyub 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 q-,ze/-h tjlhstorage batteries together in parallel, and place them in a circuit, the combi-/hlqze,t-jh nation 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 connected in series tn )et6 oj -bpf-hnyzi ;kj9+i:o 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 capacie u1s+g.6e,lq+ n/b mkxfs vm;tance mme.6f +sbq ;/sg,ulkvn+x1eof 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 connected in s 5ja1yqfqtc)d 292pa ixik,2reries to a battery. If a total charge of Q flows from the battery, how much charge do2xct rd22k9a,)ipa1iyjq 5fq es 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 capacitou9ke3ox.8 tq 0 y2ufbjrs are 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 equivalen)fd +ld)npes- t capacitance of then +d))dle- pfs 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 paramup o7(5zteaz o7as45-f z:bvllel to a battery. If a total charge of Q flows from the battery, how much chze 4 5zfo7:mavt - 5zao(p7subarge 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 e.*bvsuus mf5/ 0g7lo **zfs kRC?

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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 aw9k- f15a)a redhn(-e0ijp gkn ideal battery of constant terminal voltage. At kd-i 0e5wk(egrh 1fjnp -aa)9the 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 ideal wggnvmbdsov pvttp72g 0;y7p/- r5+8battery of constant terminal voltage. At the m r;ngw+8pmt7bp-vgg0d5 /v7vts p yo2 oment 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 colix )wt ;1n4ecp66ghn dv:ca/nnected in series to an ideal battery of constant terminal volt i d/aevch:n;w 4616xp)lngt cage. 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 shouldm*hn) 3: wne6x :t;tpqgj/zacyxt 95r

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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 convertj+ ycrln7fs: (ed to an ammeter by the addition of a

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A current reading is obtained by properly placing -xtfhks,9a f9: 3ze bfan ammeter in a circuit consisting of one resistor and one battery. Aatf xzf 9:kh3bef-9,s s 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 ammets48uct e(/cpu er'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 gy, vb- hy1yup:n8xq7 *b8ocfnalvanometer, 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 re,b, t 2ijh6 iypp.f )5xtas7ydsistance

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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 obtainen )e.s tyi+m(9lba+f1drn r1od by placing a voltmeter across a resistor. What happens to the total current flowing in the circuit n.1tb (f1+ds+ 9my)orieanrl as a result of this action?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An unknown resistor is wired in series with an ammeter, and a voltmeter is p ce/wm/jai k/ok3n; r)tpm(d7n,w xx,laced in parallel across both the resistor and the ammeter. This network is then placed acro 3no;xxpie)/d kw(7t/cm amw kjnr,, /ss 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 j*tx vu.:lp89vfzj 5lseries with an ammeter, and a voltmeter is placed in parallel across t*vxvz:lu5jt p8f jl .9he 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 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.g*x u:: wi3jbg0 $\Omega$ 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 6mcw8 vmg)j .: ;1 )bp6;mmizc++6opxoko ye og.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, 12,3, e8i+rqk+ f zzr,dgi 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 series combination of a 3(s+ifrd/p5 ci d:tm*r .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 3d- 9fcqnb 2) czpo)a+i.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 int fea- p-b1ti;xo 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 intsj - )y0vknnxvwj.tp n -bi .cgix4921o a parallel 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 o9y-yhln 16 km)+ fawxdf 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 tokh np4 j4-tchgpk(t8e*2 iz ,h a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same4*t p2ghhtke (,pzh48kci -n j time what total current would they draw?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the maximum number of 100-W light bulbs you can connect in parallel inczmiwig7 i9.)pyi, zd a4n)1o a 120-V circuit without t,iz) p14)dcigoy 7imw9i z na.ripping a 20-A circuit breaker?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A combination of 2.0 ljkfh+tlv 3(dqs ) ft c.60ci-$\Omega$ 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 anoh2h81ct* u dmd 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 4svflpn 91ty*.9 4qr pg.0, 6.0, and 10.0 $\Omega$ are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0 $\Omega$ resistor, what is the current through the 10.0 $\Omega$ resistor?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two resistors of 5.0xaml 3mg 5n4/v 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 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 mg8cp i 6u/nl0and 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 and 9.0)+v qk4ta3b fg $\Omega$ 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 1 s lka jc) unww5jd5(b5k16g7d +pohqcircuit 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 throug,qi /1ru t3nfh(oh+ tch $R_2$, 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 resist 5v+oiy qmu.rwm(4a*hance 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 current +s za*ygxwg4i6 v0h.unr 2p/y 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 9 9/ohs thz*md+qx-gaj g3no: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 the k 9nzf oehe,fmdn9h12jc)- p.kwq; u -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 points o l5s,mzomb)9 )disrh -k,v5 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 B72 ./4xvm st;nq hm(jjx4yd xy 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 poin ,ezz7;bm6e 2e. suvvxt 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 da+z y -zjkzr8-39j hxbattery 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 Fi7ekbyf p :r7*bg. 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 i+s3d8yf 7 okbun 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 the 8 2fb qhk8 d;wn,8ios0*t1 a15 s xiscbv$\Omega$ 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 t. -yuavk.d3zf-irs4hhe 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*n nf1;b s.dqr 12 $\Omega$ resistor in Fig. 19-7?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in the 18zho2 lddw*g;. $\Omega$ 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 thsh mj2163 tyay myub*9e upper left and lower left cor93 tyb u2*yjmm16sayhners?

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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 equ (saf.jbix4 k;ivalent capacitance of this combinatiob( a.4s;ifxjk n 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.w( o52ok w1 (ii8ygjvl1 kddofk. .fj(0-V battery. How mkg2o.kk8(oi d( vwyw( if1lj. 15jdfouch 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 capacitorgij;.gnuhk vue1) kxc0 v66b*s are connected in series across a 12.0-V battery. What is the potential difference across th6 . b0vk*x jgen 1)vcugk;6iuhe 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 0;ql8nq6waiya a a1 l;;cea.scapacitor are connected in series across a 3.0-V battery. What i;18 a.aalwaa;ce0l6qn qi ;ys s the voltage across the 1.0-mF capacitor?

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-mF and a 2.0-mF capacitor are connected in series across a 3.0-V bgir yg. g.o-6oattery. What is the voltage across the .y.or -igg g6o2.0-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 yo/ov/p j9 la5parallel across a 24-V battery. How much energy is storedpvajy5// lo9o in this combination when the capacitors are fully charged?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Capacitances of 10 mF and 20 mF are connected in parallel, and this pair i 2l)b*jwe.rdp2p9c ux d)r h s l0,-*whgkdz+vs then connected in series with a 30-mF capacitor. What is the equivalenpvce-,bs r22h+lzu x k**)wl0r )d9gp.j ddwht 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 paracgkzqu)cms8k w-f(k)h 8 j).w llel. The combination is then connected in series with a 12.0-V battery and a k. kcs)z) (8chgk-jqwfw m)u814.0-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 combi.c oked65;aa7 bguzh1 nation is then connected in series wh5ag o.k6 c1z7;bd ueaith a 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 mF and 8.00 mF gknd33 yh;: bqare 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 vdh 3gk: 3qy;bnoltage 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 through f- ,b/18ydlj,m47yjdcg :bj yh2ywnxa 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 th5 .ek tf9mo/zsb r7+ppen 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 cembox z r)h4h,+,) pwsonnected in series with a 0.50-mF capacitor. The capacitor is initia m)hb o 4hr,)+w,eszpxlly 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 tabmytd;b5;5n4zm 5cwb ymb58 + g+c.enk )unu o 6.0-V. It is then connected in series with a 3.0 8b bm+wku4gt ;cu)55 nn5nyc. bdbez+y5;amm$M\Omega$ 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 of 10 fxmx97n56yx*vk50inx wrr -k0 $\Omega$ 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 yjaebb xw-*.13cl lk71rmzc( coil with a resistance of 24.0 $\Omega$. A current of 180 mA causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for
10.0 A, which resistor is required?

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101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A galvanometer has an internal resistai15gfp6y15mic gm dc 6nce 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 0 3 *na(vftiozt2vbl: 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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