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习题练习：Physics Unit17: Electric Potential
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 作者: admin  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月15日 14:49  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  
  Which of the followine1gxk6b ( qv;tg is not a vector?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomb is aftcnc16ton:/psu 5 lh ,w+2 nv

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two identical aluminum objects are insula/nqqvqw(-80fu9 sh dbted from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. ( 9f08-su/ qb dqwhnqv Which object is at a higher potential?

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a proton moving in the diro+8xx:qsat.a j)wly 2 ection of the electric field

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For an electron moving in a direction opposite to the electric field (p2.0qrg5.,ib5ldt5nngodjeo uedx6f w1b;

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Several electrons are placed on a hollow conducting sphere. 8a )cd.ufg0)yfv1 pgblcai 1y m5 mh/; They

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A small charged ball is accelerated from rest to a speed v by a 500 V potentialrtsna + lhw;s h: 9aj+pj):b*naxl7*t differn) r sb a:hl; x+l*jja9shp7: t*awt+nence. If the potential difference is changed to 2000 V, what will the new speed of the ball be?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A surface on which all poiy; p1qc9db q,ngkimqm 16(; wwnts are at the same potential is referred to as

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A negative charge is moved -*gkt5ld d) uofrom point A to point B along an equipotential surface. *o5l udgd)k-t

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfaote7 6du 6 abprk;/hn,ce must be

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The energy acquired by a particle carrying a charge equal8m7d49 jugqr7dn1 p9j34jk rhy/qk u w to that on the electroqmj g 8r uh 4rnkjw9kjdd7q314/up 9y7n as a result of moving through a potential difference of one volt is referred to as

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The electron-volt is a a9 pwd3 r+g2yvunit of

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspondsx4nn-dv8kgahawlgf(/ q i4 ) 3 to

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at a distance of 2.0 m from a positive point charge isoy:a cnnau;.1 10nc un:1o.aay;0 V. What is the absolute potential 4.0 m away from the same point charge?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at a distance of 2.0 m from a negative vzd24wzw/ml;sci9 v (x 6,seq point charge is -100 V. What 9is;2v vmc e sd ww(/6zqzlx4,is the absolute potential 4.0 m away from the same point charge?

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at the exact center of a square is 3.0 V whuva p us d. (xiqi( z/6lk78+nchwt0l6en a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when each of the other7xqsul cti.d6 w8uv/0(a zln(i+ kh p6 corners is also filled with a charge of +Q?

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The absolute potential at the center of a square 9n(zqm-8f l 8 o lmzg;ko;ow2jis 3.0 V when a charge of +Q is located at one of wz;k9(8m l8qo ofjl2gzon;-m the square's corners. What is the absolute potential at the square's center when a second
charge of -Q is placed at one of the remaining corners?

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electric dipoles always consist of twm im.z--ts(w im)i pn:o charges that are

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One coulomb per volt iswri4qk id ae*qc7 2b1* a

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacitors are identical in every respect exc s/rtg 0nl-j bwc193anept that one has twice the plate area of the othe0r c-1l9/ bastg3jnn wr. If the smaller capacitor has capacitance C, the larger one has capacitance

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capac6jzbq:* czod+p )9hgf7u v8gk itor has a capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the new capkb7)6dvggzj+:* foc 9 pzhu8qacitance?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A battery charges a parallel-plate ca73twl)py8fh9* ohadq nxnz4 2pacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens to the potential difference between the plates as they are being separay4wn3nt8 27 haq fx9dp* )zlhoted?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric fiel) f95ja7mfs6 cyfrq+f d between the plates of a given capacitor is weakened, the cy rsf7qfm)5f9cj f+6 aapacitance of that capacitor

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The plates of a parallel-plate capacitor are maintained with const5v:io1npgf)* hqm vb .ant voltage by a battery as they are pulled apart. During this process, the amount of charge o1 io5bpq)nh v:v g*.fmn the plates must

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The plates of a parallel-plate capacitor are maintained with constant voltagz97w;q/l.z kbs ksp;: kl1q vmn6l:ze e by a battery as they are pulled apart. What hq6:zkev/mwz9l s. nsq k;7 ;1:kblzlp appens to the strength of the electric field during this process?

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26#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State three reasons for adding a dielectric material between the plates o.( .w8* b /jswn-qaw93 uo4wswhrhawlf a capacitor.89whs wsa q*( arb.ww4wu w.hj-/ ln3o
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material such as paper is placed p(qtag 18mu (wbetween the plates of a capacitor. What hwtm1pg(8 (uq aappens to the capacitance?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material such as paper is placed between the plat.6tfokv 6t esf/n9 .bxes of a capacitor holding a fixed xf /.tveob kt6n 9.6sfcharge. What happens to the electric field between the plates?

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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor is connected to a battery and becomes fully chargedz,lq (hgms*d(kea : o6. The capaca q(*k6o(emd,:gzlhs itor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. The energy stored in this capacitor has

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the capacitance of a capacitor holding a constant charge causes the en-iz p 00nqmwkp -9a,muergy stored in that capacitor pm--9a u0n,wi0pqzm kto

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the voltage across a given capacitor causes the energy stored in thata7x.tc:/,yny osid f2 capacity af2t.cid/ xy7o:ns ,or to

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  It takes 50 J of energy to move 10 C of charge from poinao 2nlvt,rqwr/ (z4o6t A to point B. What is the potential 4wnqoa(z6/vr,tl2 o rdifference between points A and B?

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The net work done in moving an elect 3*uqvbbvka97ron from point A, where the potential is -50 V, to point B, where the potential i9ubv 7avk3q*bs +50 V, is

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton, initially at rest, is accelerated throalo:f,0b y.9bvhn k9 wugh an electric potential difference of 500 V. What is the kinetic energy of the:9.lnb0wfy9ak, obh v proton?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton, initially at rest, is accelerated through an el w437b)sgl-7av6bg nfyz yqw-ectric potential difference of 500 V. What is thwb-6bwq77 - zg 3f4nlyays) vge speed of the proton?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Starting from rest, a protoncgcjhd ,2q/dbv/hl 40 falls through a potential difference of 1200 V. What speed does it acqui c//clqv2 0d,hb4dghjre?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much work does 9.0 V dnisw)8+ zouw fwz *+z/o in moving $8.5 \times 10^{18} \; electrons$?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stationary electron is accelerated through a potential difference of 500 V8 lzpp ,/zftsls:h 4vv2e1 t7i. What i:7 21szvilfpve4s,8zpt t/ hls the velocity of the electron afterward?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-g object carries a charge of 20 mC. The objectvv7ssjyt*j,;slze;w jqxv.s5 (8 if9 is accelerated from rest through a potential differencsv 9; zi*5sfv,xj8jj y qw7(e.lsts ;ve, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potential difference?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0-V battery maintains the electrical potene vqwk ( 3+zy5avqo1o: :0gqxxabv0z -tial difference between two parallel metal plates xv+:a q zekvqzg v:3bxa0- y(ooq1 5w0separated by 1.0 mm. What is the electric field between the plates?

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A uniform electric fiel8 ku:bg*j3vov3m + rcrd, with a magnitude of 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2k mgbr38v* r+v:3uo jc500 V, what is the potential at x = 2.0 m?

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electric field of 50 N/C directed toward t 5pkanj ,452fw5fhdz dhe east. If the voltageha5zp,52d 4w k5dff nj measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of that point?

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton moves 0.10 m along 04n0kq iga-)deg) gbvthe direction of an electric field of magnitude 3.0 V/m. What is the change in kinetic energy of the protong)a)-gvn0q bg0k4 dei?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, separated by 0.20 m, are connected tofju76) ux2gxi a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 1.50 m fromig6uu7x) xj f2 the positive plate, what is the potential difference between the initial and final points?

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, separated by 0.20 m, are connected to a 12-V b1 t5nyoj g*te2zo;)xrattery. An electron released from rest at a location 0.10 m from the negative plate. When the x t j2eyogn5tz*; o)r1electron arrives at a distance 0.050 m from the positive plate, how much kinetic energy does the electron gain?

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, separated by 0.20 m, are connected to a 12-V battery. A+m w:fs(h-dn-mn sm16wkzg-cn electron released from rest at a location 0.10 mc-g6-mhwnmdns-1m(:s+wzf k from the negative plate. When the electron arrives at a distance 0.050 m from the positive plate, what is the speed of the electron?

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electric field of 50 N/C directed toward wv5ob e3vddqvrf9 93,the east. If the voltage measured relative to ground at a given point in the field is 80 V, whatob39wfe,vv9 d5r3 dv q is the voltage at a point 1.0 m directly east of the point?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform electrpdfk/v9jggcjqw: b23/h *4x eic field of 50 N/C directed toward the east. If the voltage measured reb 93/ kp f2gqghwve/:4jxjdc*lative to ground at a given point in the field is 80 V, what is the voltage at a point 1.0 m directly south of that point?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a Cu2+ ion drops through a potential1wy7mou xj3:u difference of 12 V, it will acquire a kinetic energy (in the absenceoy j:xw1uu73 m of friction) of

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the potential a j 1(:xme 0rktg l*mdn7ny3.qct a distance of $5.0 \times 10^{-10} \; m$ from a nucleus of charge +50e?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 3.00-mC charges are at the ends of) 27yagcgs*t*az 0ghq a meter stick. Find the electrical potential for the center of the mezat 0* 72y*hggqg) scater stick.

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-nC charge is at (0, 0) and a -2.0-nC charge is at (3.0 mmt2d8 k n3kv0l, 0). If the potential is taken to be zekt2mv3 nd k8l0ro at infinity, what is the electric potential at point (0, 4.0 m)?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-nC charge is at (0, 0) and foe krs:1zw/j+/ +tvza -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential energy of a 1.0-r/w+ z vok1/s:jtfze+ nC charge at point (0, 4.0 m)?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-nC charge is at (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the pote-sac ipu-m/.w ntial is taken to be zero at infinity, what is the w- apwci/us- .mork required to bring a 1.0-nC charge from infinity to point (0, 4.0 m)?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Four charges of equal chariws 8it;n*q6o x2 ji-fge +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 tw8*f2 xsi oi-nj;i6q mC, a = 3.0 cm, and b = 4.0 cm?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square is 1.0 m on a side. Charges of +4.0 mC are placeduj79ak 6l-j u1 2sg.vjl2msjc in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential ing69 2j7js2c kl1maulj. uv -sj the square's center?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An alpha particle (cklp yzw;:q*8adu;7kc harge +2e, mass $6.64 \times 10^{-27} \; kg$) moves head-on at a fixed gold nucleus (charge +79e). If the distance of closest approach is $2.0 \times 10^{-10} \; m$, what was the initial speed of the alpha particle?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How much energy is necessary to place three charges, each ol3/ye rvi pevw/e(w-/f 2.0 mC, at the corners of /e ervlivw w(3-pe//yan equilateral triangle of side 2.0 cm?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What charge appears on the plates of a 2.0-mF capacitor when it is charg6bymf4+ ar) w3fs3nyqed to 100 V?w+rfym3 )s 6f43ybnqa

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor has plates of arepmo.;av5a bdrl .9ol 4a $0.50 \; m^{2}$ separated by a distance of 2.0 mm. What is this capacitor's capacitance?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capa*g 1nr )eof0hr,f in50qqc6tncitor is filled with air, and the plates are separated by 0nrf i )h0 ct0*nr5e6ogq1qn,f .050 mm. If the capacitance is 17.3 pF, what is the plate area?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor has plates of o8or;z+hb4g xarea $0.20 \; m^{2}$ separated by a distance of 1.0 mm. What is the strength of the electric field between these plates when this capacitor is connected to a 6.0-V battery?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor has a platnz a1p1/zd/f ue separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the highen duz 1za//fp1r potential, what is the electric field between the plates?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 6.0-mF air capacitor is connected across a 100- ) vssmz09,5fpeb+ slb:k(vwxrg/ mt1V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remained connected during s:/kb,v lsf1pzex9mv t ms(05grw)+bthe process?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A charge of 60 mC is placed on a 15 mF capacitor.h s2odh (7tz:d3s(l.hfkifg + How much energy is stored in the ca hd( kso s:fz73.g2i+t lhd(fhpacitor?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  20 V is placed across ahub o8+xjjq . d,x,..o8zpleo 15 mF capacitor. What is the energy stored in the capacitod .eobohp,u8j xzx.jo 8 +,.qlr?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A charge of 2.00 mC flows onto the plates9/o a6 hrnr;)fixa )3mi t*eg/v9vqt s of a capacitor when it is connected to a 12.0-V battery. How much work was ;nm x)vsag tfhii93 r6/ q9o)t*e/va rdone in charging this capacitor?

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 10-mF capacitor is charged so that it store* ni 1 2,q5e6lultyujis $2.0 \times 10^{-3} \; J$ of energy, what is the voltage across it?

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacvac(:p6 w4c +upd0j imitor consists of plates of area $1.5 \times 10^{-4} \; m^{2}$ and separated by 1.0 mm. The capacitor is connected to a 12-V battery. What is the capacitance?

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate cap5b 7zm(:n)0nt ,yu cw4prctzf acitor consists of plates of area $1.5 \times 10^{-4} \; m^{2}$ and separated by 1.0 mm. The capacitor is connected to a 12-V battery. What is the charge on the plates?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor consists of platesrdx3 wb5c9e/v gphgw6e7 xer6ao k( ;; of area $1.5 \times 10^{-4} \; m^{2}$ and separated by 1.0 mm. The capacitor is connected to a 12-V battery. What is the electric field between the plates?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor is constructed with plate ared t xi 6*hnoeo)m-2vt-a of $0.40 \; m^{2}$ and a plate separation of 0.10 mm. How much charge is stored on it when it is charged to a potential difference of 12 V?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitor is constructed witjvh4ltgj09m29 ,av 4qzxor 9yh plate area of $0.40 \; m^{2}$ and a plate separation of 0.10 mm. How much energy is stored when it is charged to a potential difference of 12 V?

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74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15-mF capacitor is connected to a 50-V battery and becomes fully charged. tt)cz1s. +iz aThe battery is removed and a slab of dielectric that completelys)+c tiz az.1t fills the space between the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the capacitance of the capacitor after the slab is inserted?

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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 15-mF capacitor is connected to a 50-V )cnfm6o yxv 5.(qy 5k bqdki ji)7;hp+battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the voltage across toifk5y)v6;jqn+ yc.m7 (bx i 5qk)hdp he capacitor's plates after the slab is inserted?

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