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习题练习：Physics Unit19: DC Circuits
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 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 7w,arnvag5s . the terminals of a battery, when no current flowv wg75ns.a a,rs to an external circuit, is referred to as the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The potential difference between the terminals of a battery, when current flozh1txzw*cjd1i5fqa.), h pwa k61kv :ws to an external circuit, is referrevw .z)1,dh1*pj:5w 6ak hzxcf1kqati d 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 seriesoj83rz(*k0 heif5gj -ejdw.2(xshk e 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 connect z yfl :d1sllu3nfz ;qjnk1+ 0s5hm1j 6c7r1dled 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 pjbxfgzv 2 wr/307gr *connected in series to a battery. If the current of 12 A flows from the battery, how much current flo/gj3 v0 2w*7rxgpfrb zws 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 in8pz4mqrqe, / mjwp;:s series to a 12-V battery. What is the volta 4z,mqqp w/ :;j8mrepsge 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 series to a constant voltagei.jmrmi+doi;y 7: ,mf source, the power supplied by t7jdmfiy.: o, ;rmmii +he 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 parallel to avucv3,:f;9csx c -fsxh f e2w9q*1nm i 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 cqqm4+ncxmi3 i8 g9 (y,dzdpw7an 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. +mys wct.76m -xcp )zcWhat is the v67z-x.+c cm y)mstpw coltage of any one of the resistors?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical resistors are connected* jg93 qv xwyn2esu98i in parallel to a battery. If the current of 12 A 3vj g9se y*qwn9 i82xuflows 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 lights are connected in parall )pwzz k4x/a4g2q a:mmel. What happens if one lamp burns out? (Assume negligible resistance in the wz:zpkxm aw4 qm 4ga2)/ires 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 tqmv ;ww2)10wh9k +2dcxinh weo a constant voltage source, the power supplied by the souih2wqh 2wmwdvcn k ;x01ew+9) rce

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider three ident v c7)iktbeanxg*y*dd4 b,n+ *ical resistors, each of resistance R. The maximum power each can dissipi+ytv )xc dkn *ang ,*4d*b7beate 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 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 rule.++l nuyro xzq1za7bwi255: y-7br, 7 yx dvgkk
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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 rulr:0 2pmbzq,k(k3m35pk6aj t 3i mwf cee.
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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+ ,mpe2 xz-htm 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 o.wjr;1 ve qxx 8,gis+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 valigd(jkwkb4 dmaa4 *+n4cmb)d +d 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 ("+" .esw+scko-rfse-s 6 hb f.,3 dto "-" to "+" to--f, swes6sfe3 rk socd.+hb. "-"), and place 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 imbr066 a s 2qx1ukek.edentical storage batteries together in series ("+" to "-" to "-" to "+"), and place them in a circuit, the combia.kk01e x62bqre 6sumnation 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 parxl -s (mbek-m:a73x yeallel, and place the skby( -3-ee 7lxmx:mam in a circuit, the combination will provide

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When two or more capacitors are connected ib14 t k1lcc44iexa +.5km zspun 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 equivaleo(1gle+2a 7vyj/m8:cw jrilr nt capacitance of the c(:e lgr 2j a+/yw8o1iv7cljrmombination increases.

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capa ot3 o q.x8g) xtpjxtijb:5ql80 xnb-1citors are connected in series to a battery. If a total charge of Q flows from the o- 5px:0qbig1jj .lxt x b38to)nq tx8battery, 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 tl e(8k) mzbn3connected 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 equivalent capacuecjj/0ci ;q :fdmus ))9 v4veitance of the combination incrediuj fc0v)uv): ee;sq mc/ 49jases.

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical capac.;,q/vtbplptjiw1j v tho8 18itors are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does eachqw;vpjo8p8,h/ 1 ttitjb vl1. 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 Rm7 .f rhtz.uj7C?

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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 capaci p cb 8iey(3r,o)c,kyztor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage acob kc3pyz(,yi 8) ec,rross 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 5c knw 3brumk0*4 mjz7md8g.aseries to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the vol gjk cm4uzm w8.0 35kam*nr7dbtage 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 connieolvq+8 v+3de+ pg) cected in series to an ideal battery of constant terminal voltage. When this system reaches its steady-state, the voltage acrlipgq 3 dove+)v8ec++oss 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 shou d 7cuxtb938*abe-gamld

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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 hq2 zk gil,)s:ez/-nkthe 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 placingcra.55ciqt o/ an ammeter in a circuit consisting of one resistor and one battery. As a res. ccq/ t5iro5ault,

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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 u-o d1h -lpbm5an 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 friwrt8,,l b ne(om 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 resistalg6mcy ga9u,uxo 1 p nczw1n2 gvw8(2/nce

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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 across a resistor. W(zq ;.alqh ke3emb;j6 hat happens to the total current flowing in the circuit asmb3q h( jaz;ql k6.ee; 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 wir(1 pws kzu1xj(s)di6xed 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 voltmeter reading by the ammeter reading, the vap 1xikdujws( 1(6 x)szlue 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 8j/wde imveasa i gur 355 yu6p1ic;0)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 readi 0 65ua5vjdygpu8r i3wisea1 e mc/);ing, 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, an g0jci*;amxd c q98o* edl5/cp+gqh e:d 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, wf/f + 71h4i:pbj*s4s kdzw gi12, 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 6.0cf,9yp/e,n dczhg 55u+1eh 1lphhih hh+ nk*: $\Omega$ 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 u(o lzk3pi hk0bu 6)d+a series 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 sepi9fqbdh 62c br3+9y5 ,*c uh,cymisp ries combination of a 3.0 $\Omega$ and a 4.0 $\Omega$ resistor. What is the voltage drop across the 3.0 $\Omega$ resistor?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination qud yb;un:+(x9jn s;gof 4.0 $\Omega$, 6.0 $\Omega$, and 12 $\Omega$ resistors. What current flows through the 12 $\Omega$ resistor?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 22-A current flows into a parallel combination of4j irp7 ku elrc0;shz n3--)vw 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 of czr,)z* oi 0sx5v8r3h 9eeqmw 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 avq3r v5g;nsa/re connected to a 120-V circuit: 1200-W toaster, 650-W coffee pot, and 600-Wsa /5;nqrg3vv microwave. If all were operated at 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 lq-e(bb g3qlvv6q x33zight bulbs you can connect in parallel in a 120-V circuit without tripping a 20-A ci-qqv3lxgqb6(v 3 e3 bzrcuit 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 k ua ..lf,cxsg6,d n6f$\Omega$ 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 30 a6 oqs* 1zag6tx23t6u uooua+$\Omega$ 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 4o j/:kwb*25 yurc3vqd.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 5.0 and 93 0x-ik0cobf x.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 94, gpiwbm/u/l / a1zvc.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 yfiz:4h /ynxap 47u x(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 resistancj3 ; r)(rebosxe of the circuit in Fig. 19-2?


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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 40 \; V$, what is the voltage on R1 in Fig. 19-2?


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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If $E = 20 \; V$, what is the current through $R_3$ in Fig. 19-2?


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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If 1.5 A flows throug4 3kc ykfu+j v*+wkea7h $R_2$, what is $E$ in Fig. 19-2?


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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total resistance of the g sc9 0d 0tgh+elb8xt;fm*5kh 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. 19mat6 oi08hirz.*p (no-4, determine 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 Fig. 19-4, de -yn- yxqo4t:ltermine 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, deterl3 /kq vwz)4hgmine 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 in Fig. 19-5? m p( u-0xykzx7zfa73f


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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 pkq*rubd 6ij)4oint 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 r5tr0 xeh)iu5tl0y2k 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 , b+f9af+4aez mnlg dqla+z;4 the battery in Fig. 19-5?


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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential o+toleg.v7. 9x- so fqdrop from point A to point B in Fig. 19-5?


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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Determine the current/4a3 vkbavhjc)hk (.t 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 the 25,wbvytgh) d9pj0wn (l)xx j8 $\Omega$ 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 v:f rz54ud )ht4 $\Omega$ 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 xnq41c;24e 6s)e l2ukwrftut$\Omega$ 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 qkmafgty3c i1.,o2x . 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 connecting the upper lefth m, bgqbsk,e6va/ kwajf: +,8 and lower left cornev6gasbk w , +fk,:,em h8jqba/rs?

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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four 16 mF capacitorst0 043kplphw6 9euhx i are connected in series. The equivalent capacitance of this combinaie lu 4phtw kx0ph0369tion 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 12.0-Vsllf8.jop +5h battery. How much charge is stored in the 5.00-mF capal fhj+pl58so .citor?

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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 series5k5 bpu*:1:uwa0sgu h o 03ysc rf- dlt2ui4pp across a 12.0-V battery. What is the poteu2 p4iuhbfpk:us-u5 3aly s5 tp1r0c0dwo :g *ntial 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 capacitor are connected in 0vbe,zl r3i:mseries across a 3.0-V battery. What is the voltage across the 1.0-mF cz3rmbe: i,l v0apacitor?

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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 capa/8ll b cqzg5j9ey8ta (9yem4zcitor are connected in series across a 3.0-V battery. What is the voltage across tejzz y9bq98 l yl g45(eac8mt/he 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 arg 4 xo (xtnr,3m+9 b6qmxqjdl1e connected in parallel across a 24-V battery. How much energy is stored in this cn,x3o + tq (rgxm19xjd4mb6q lombination 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 an hclhj3w1n4n(l) 3qe nd 20 mF are connected in parallel, and this pair is then connected in series with a 30-mF capacitor. What is the equivalent capacitance of thinhnll1hncj334 q w(e)s 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 mFo1 png kt9/k ek l,xt*+ k3u0w2(tgvekko;, pr are connected in parallel. The combination is then connected in series xp1rkvo,tp gu;90l 2kk*e3t /no,+kkg t(wke 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 ag,-/yoc 0 njsjre 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 /0,oscjyj n-gcharge 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 are connected in paralle ehek)+wv+z 0v1*aoai l. The combination is then connected in series with a 12.0-V battery and a 14.0-mF capacitor. Whatae e+)+k0w oi1 hav*zv 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 c bcj)wpv* *o8x9p9 1topem, hgharged 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 discharge4cw m ux8,n,uvd through a $4.0 \times 10^{6} \; \Omega$ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-MW resistor is connected in series with a 0.50-mF capacitor. T q3mayw,w;)afx f+j 9ghe capacitor is initially uncharged. The RC combination is cha,a fagyj)+ ;3wqfxw9 mrged 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 i jx zs)5z-lh-io7i8r4u5 b yals charged to 6.0-V. It is then connected in series with a 3.0si 5izo7 rj)zu-yl8l-hba4 x5 $M\Omega$ 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 aw2wef1o2 nd9jn7 cqh+ n internal 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*6 s txepa18sr 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 v1ina hy9d86; din3 )sh-5h qeomolr 4100 $\Omega$ 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 resibjd7y8 *hhtsh3uuo1)stance 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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