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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 following is not a vect, ,tm yatjy1j-or?

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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 isk9fx: nw24 8hzq:iz nc a

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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 insvtqzu v ,v*6os k*)a4;d u5lesulated from their surroundings. Object A has a n,a4tqud6ue;l oz* v* )5vkssvet charge of excess electrons. Object B is grounded. 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 directio uv27tut5u o0gn 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 da3 /)xs krw,c5v 5le8bzdpw( birection opposite to the electric field

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Several electrons are pl58c 5b0yixr wlpq5sg7aced on a hollow conducting sphere. 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 u ,0c 4: trcubqmiy8.+fufhx6is accelerated from rest to a speed v by a 500 V potential difference. If the potentiuh uub8.+ xm,0i6tfccfq4r: yal 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 points are at the same potena 5qo6mz3g7p2 o/m k rn8a3c2h i y*wm6xhjpv6tial 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 from h ui gg-k-jzba6t:b5pz5(a9i point A to point B along an equipotential surfacei gp5bih9k:b jzt- 5g-za au(6.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surf2oem -s:x)t r*no dl6face 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 equal to that q stug j;fifmfli f/4fk-;qk (w*5y ;.on the electron as a result of moving through a poty k5*fq f.-4ig;tkl mfjsu/f;f( i;wqential 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 ce l4p uwkgr3py2vuc3g5 7ng2h8r5 t6a unit 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 corr0cl9 ucnitdf:4lq-.0 qs0 kxpesponds 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; nyw9tyr0 blvnvj9i.)66)ts a1mbt w.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m0yt w6j t v)9;vwtrn6ls.ay9bbi1)nm 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 po-rg ,h3ozbo;bv k(0pk int charge is -100 V. What ihv(pzbr o;,- kgk0bo3s 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 squa4,j,9 bxe qarmre is 3.0 V when 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 other corners is also filled with 9mx e,bjaq, r4a 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 is 3.0 V when s8z-na7q:sib p5of egfgu -s m2/:xo/a charge of +Q is located at one of the square's corners. What is the absolute potential at ths :-:5ffb8ge/xi-o7 / zs2mq opg ansue 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 two charyg 7y.f (u(k( -zrr mfdqe5o0uges 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 :kz9.xg itwu *is 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 ixbl) , j0yu/tldentical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, thuy 0bt),x/jlle 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 capacitor hasmd/ku382px pq a capacitance of C. If the area of the plates is doubled and the dis pkdp/mx 328uqtance between the plates is halved, what is the new capacitance?

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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 capacitor fully and theo)xp)w:)te-w5v: t u4bhgtln bk + /osn is removed. The plates are immediately pu bwx)+ol e:-:v nb/wh4t gko tut)5ps)lled 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 separated?

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the electric field betweenujw zufzt(-6 k6ietgqzz /;e0k5 2pj; the plates of a given capacitor is weakened, the c60(5fj2geu t jq p6z-k/e;k izz;utzwapacitance 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 consxg,a jo9x+nzbk8/rx4 y c fx,(tant voltage by a battery as they arxxkag+( nf x9j/ c4b,rz,y x8oe pulled apart. During this process, the amount of charge on 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 mainb3g)9d, nv ,u h rpma0o6ay2wgtained with constant voltage by a battery as they are pulled apart. What happens to the s0umd9anaby2 ,,3g)vo p6h wr gtrength 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 g ,93wnvubbg4 sd:8huthe plates of a capacitobd3u48vng:,hwub g 9 sr.
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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 a.kk c37rahb1 dky:+up s paper is placed between the plates of a capacitor. What happens to the cacu : r3ykk1 dpkh+ba7.pacitance?

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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 bk2 sua mrg0q9r k5 8tq2a :jn-1zv g0oqxhp0,netween the plates of a capacitor holdi xkjm ga12s rq5qa0q0u hnk8 nv0r2,:ptzg- o9ng a fixed charge. 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 cap7dbrom/oa 2z kx+hc1 *acitor is connected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. The enk72d oh1+romx*zac b/ergy 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 eneaj+m9t 2oy 1bihe.sd7 rgy stored in that .29jbmh 1 saeio7ydt+capacitor to

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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(v9vjfr.y d. 9+ailb u the energy stored in that capacito+b.vvld. ar i(f 9y9jur 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 point A to point B. W6y-6y(jf llqnl6w+e hhat is the potential difference betwee fn6h6l-(qly + 6jelywn 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 electron from pp(l/tefi4g1 f,z,f choint A, where the potential is -50 V, to point Bilf peh(,gtf/14z,fc , where the potential is +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 ,xpk;urc:m *o :abo)sat rest, is accelerated through an electric potential differx:,up)m oc* okrsab; :ence of 500 V. What is the kinetic energy of the 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 electri zjwen * , bfqa;75kvjz*eh2m8c potential difference oa nzb,j *f ;85ejv7m*zhew2kqf 500 V. What is the 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 proton fl :epn.r, hw pf -,w4r./ehpyyalls through a potential difference of 1200 V. What speed does it acqu.:,,hhl 4-r .eenppfwr yyp w/ire?

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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 do in moin6c0a.yg oe n/t xh2-ving $8.5 \times 10^{18} \; electrons$?

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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 acceleratedpdl3q.+3rk* fa nlo um + +fcs()tpxk2 through a potential difference of 500 V. What is the velocity of tc*+ 32k+sp lpou qf )tf.nm3ladxkr(+ he 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 object is acceleratonrwi- e ih8vc,() j0oed from rest through a potential difference, and afterwarv i8i)0w-ro( ejch,nod 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 potential difference betwgm ogfv2.n,j:w ,t4n bsdn6u 9een two parallel metal plates w6.jfngb:dm nv92s4,nu o ,tgseparated 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 field, with a magnitqykzfp33kc6 .fcw lvup99 2c+ude of 500 V/m, is directed parallel to the +x axis. If the popcfk 9l yk3zfqc9c 3u+ pv.w26tential at x = 5.0 m is 2500 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 ofljgrt- z-u)cz i 42 spb7x:a. yd; jy1o/d*sjl 50 N/C directed toward the east. If the voltage mealzxpj/iocs*g4 y.b;j :dyj)-ls r1 dt-7uaz2sured 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 the direction of a5r : a 0 86s:uedgf-djhziwm;zh*uym+n electric field of magnitude 3.0 V/m. What iru:5wzyu0jgi z ade* d ;86-fm+hhm:ss the change in kinetic energy of the proton?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel plates, separateu d6yjnwirvibm-z+w7:+9 :t y ;s sna-d by 0.20 m, are connected to 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 distan ;mi:s t7was+-by uz 6nj yvi9n-w:rd+ce 1.50 m from 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 c0cxt5*es0d 5n 1 apnlor,9 elto a 12-V battery. An ele 0*xc,9nn5 psaer l1e5tcdlo0ctron released from rest at a location 0.10 m from the negative plate. When the electron 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 connecteqf0 k/xk,:i vi d(d i nx0ih*5.3vanbod to a 12-V battery. An electron released from rest at a location 0.10 m from tvoq:i0,k. xb* i 0 dhn(/vnax35fidkihe 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 eljsuel86h6o:q ectric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltlj ohu6es6:8qage 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 electric field of 50 N/C directed toward the east. If 91z5t khp:ija ) lfc-othe voltage measuredilk cp5)h9 :jfo-1zat relative 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 potential difference of 12 V, it will acq*og;z96 oowhl uire a kinetic energy (in the absence of frictio oo l6*w9z;ghon) 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 at a distance r-h*zjri oq:kgf ;v(bu. 1*tt)k nma 3of $5.0 \times 10^{-10} \; m$ 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 a met4qz ,uis :p.iper stick. Find the electrical potentiasipz,: .4pi qul for the center of the meter 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 )rj t2cmne j6i ea7 x*pd2h,p3-2.0-nC charge is at (3.0 m, 0). If the potential is taken to bcn,mtida ) hrp3ejjpe2 *672 xe zero 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 a -2.0-nC charge is at (3.0 m, 0). I 6qoh54vy mfys*joq +gf xb.89f the potential is taken to be zero at infinit6voqmhx8 9*ofyb sf+qgy45 j.y, what is the electric potential energy of a 1.0-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 apdd7h q2ho07mu6rt.z :l 8 lgpt (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be gh2u67z7q0 mdrd ppt.ho8ll: zero at infinity, what is the work 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 charge +q are placed at the corners of a rectangle o:i+d ,fkhjv8aau 3vz c7v3k 9bf sides a and b. What is the potential at the center of the rectangle i8hz 9:d3bji7fv,k+ 3c uaavvkf q = 2.0 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 i :wrkwomksiwu0m*e8o48b c;:q(:kmmC are placed in two diagonally opposite corners. In th: im:kmw e84krcqw8(kmo0*s ob: i;uw e other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in 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 (c, dup vp1n(wo1harge +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 tm5ipya4f wb* 53 m0lxed8bjbhk 8o:m1 o place three charges, each of 2.0 mC, at the corner4j pw5ml81m*h b 0bk:imfaob5yd83exs of an 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 t iv nmf vfg)*d3gx3/hr0 q2ls6he plates of a 2.0-mF capacitor when it is charged to 10f*23 q 3mx/vvfsl6i)0 rngd gh0 V?

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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 platon mmia3j5,.emm9 8 . urvtb2yes of area $0.50 \; m^{2}$ 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 capacitor is filled with air, and the plates are separated7wqnavgwf , . rz6p1vo+dj,8c by 0.050 mm. If the capacitance is 17.3 pF, what is the plate npvqc 7z.+,g w8av jw6f,od1rarea?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacito vdqwk axryp 6ub) ),ei*+(+zlr has plates of area $0.20 \; m^{2}$ 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 plate separation of 5.0 casz67gf6 6clzm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates6a6ls6 z gfzc7?

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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 3.uqpgwn.md;n,a+h fp o fw1. connected across a 100-V 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 .p dwogfhwpa,.m+.n3 ;fn1qu remained connected during the 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 plamo/o2j*hgwe hpos 9y0)kz i ..ced on a 15 mF capacitor. How much energy is stored in the cgmz/yp2eijwo)0oh k s .. 9h*oapacitor?

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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 a 15 mF capacitor. What is the energy stored in67j (z y:- jx ncjkdx/veorm66 the capaci6j(r6yje:x k- /6cxj dv mz7ontor?

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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 plates of a c62vjn 2yuyf e.2q,*ncjydw;z apacitor when it is connected to a 12.0-V battery. How much work was done in charje6yjw2q2;d cv.2 ,yfny zu n*ging 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 s6, (6owvmd lzoo that it stores $2.0 \times 10^{-3} \; J$ 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 capacitor consists o j4dw uq46l:c:keldjr pt698tf 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 capa7:fbh4v- *udsuf l;eewf( x7mcitor 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 capavrh f(rmuaat+* kx )/-citor 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 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 area .sbz-643az)pee lt8hjk i0idof $0.40 \; m^{2}$ 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 con azp.,76 efjcudyd* s5structed with 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 c/4z ss3ygvlum8nj.br;0 9pr u g4bn4fully charged. The battery is remo/.gyljz;um n84b p43bvusrs c9g 4n0rved 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 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 battery and becomes fully chaz ;(5 d6h3f5o kjz/dr 1zmjo2twu 0kyirged. The battery is removed and a slab of dielectric that completely fil5 oy0iutr653z1kz2dj/zk; fjo mwh d(ls the space between the plates is inserted. If the dielectric has a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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