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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于51fly国际课程 (https://51fly.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.51fly.win/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 75，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://autoconfig.51fly.win/test75.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: physics  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 游客未登录  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 vector?adp0 ro(zm*f77g. xgs

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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 afvqwg h4 ub- +k-80/qqskgqn.

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two identical aluminum ob 3i:lnx)h h wy zqe3k((e:sdn,jects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is n3z di (h(es hnq:,l:)e3y wxkat 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 tnaf+.3 af ,rxthe direction 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 elec)zf 5g+xr7owd1-o khon7 a;:jw fps2etric 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 p3(vi/nj ubruoj3;po( laced 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 is accelerated from rest to a speed v by a 500 V potentrv6b aqj h.+ttip+- l0ial difference. If the potentialqib+t hpl.jt6vr-0 +a 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 pow-.a 6f mlyr: 3 o92axluzyl-ftential 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 point A to point B along an j, of.v1hxxo3 equipotential surface. o3xvh.fo1jx ,

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must hmk-xa k 8ekm.l::w1i 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 chaj5n8xadsk ahvb) ( j/zy9r+9v rge equal to that on the electron as a result of moving j(ad/ vy +9a8jbrnk 5xhz9s)vthrough 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 unit c *l5ut..hnauof

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correspovm69( h/v ))zql,or9o u2z9mtccg m fonds 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 fromjqg /+nb9 ;fga a positive point charge is 1009gjf+ q;anb/g 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 a0 )oq0sshjhw, zt s,-zt a distance of 2.0 m from a negative point charge is -100 V. What is the absolute potentiazsw th,h-,o)jsz0q s0 l 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 when a au* et t:v(tsmzm(;vl)-eye (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 ee;:em*st)(l- t(vza y tm(vu 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 az) 9eur;gz e* +q6svyf square is 3.0 V when a charge of +Q is loca*yu+;9z gfve)r eqz 6sted at one of 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 two charges that are 3crergt0 7o6i)ap/o x

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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: qv o; 8/rgd;fkbmm4l 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 capacirnv t y8)eii8nwr* w*)tors are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has cae*nt w8wi n8r*)y)irv pacitance

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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 has a capacitance ofe g nh1cw-dky6 k3-+wr7(ku bx C. If the area of the plates is doubled and the distance bkk1(3uhke g--+cwdx7 rw6yb netween 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 then is removed. The pla/dd z4br.w- 9e o;ymtmtes are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What mdb /.ow9e d;my4r -zthappens 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 between 01xxd5dv 4 y qsrcm)o5the plates of a given capacitor is weakened, the capacitanrm15)yc ods vq4 x5xd0ce 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-plaxm c6i6d o-bg-te capacitor are maintained with constant voltage by a battery as ti -m -cbgoxd66hey are 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 mw3v30c4h;)q xawcn o caintained with constant voltage by a battery as they are pulled apart. What happens to a chcwn3 ;4qwo3cx0v)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 addin tk n9ij3gi) .w2tjrq3g a dielectric material between the plates of a capaci ijgr w)kq39n jt32.titor.
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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 between the plates of a capacitoyd7za4k ,sd*a4af ve10fq3 n rr. What happens to the capacitankf7fd0va dz4*34ys aqa,n r1e ce?

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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric materia+u,6tdzd3 hxf 5ttr: wc ia.7ll such as paper is placed between the plates of a capacitor holding a fixed charge. What happens to the :r,c67t f5hdd 3ltxzt+wu.ia 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 battev z o+fob)r.b*ry 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. Tbb.f*) rzv+oo he 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 caao2w h-mubj(o8 p)oa ,uses the energy stored in that o woua( ha,2)m j-pbo8capacitor 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;pm ; yu ip2f2w dmpam4r9;x.z capacitor causes the energy stored in that capacitxf;;r. mpzm pp;ya 9i2m2d4wuor 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. What ipr cp(f(z.0 rvs the potential diffe vrf.0p cp((zrrence 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 electron from point A, where the potential is -q01ju ejs 8 2d;s uwux*- pu1-pb9lq7z-fiime 50 V, to point B, -xp2f 9m7zuuu8 us1qb ;-si we* ljjpiq0d-1e 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 at rest, is acceleratedsrfkl-hyai/2v1;x2b v)0l( gbeton / through an electric potential difference of 5fl gn/hk2l iv(2/0bob;t-e1r xv)say00 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 + z6nts69n,x9a+:pd /xtk)g)ek+ths y sg ymsaccelerated through an electric potential difference of 5k96ga + ttn/tpx )ss)x, d+m:yyek h6gsz9n s+00 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 falls through a 2,utxd nqi*xa7e* r3upotential difference of 1200 V. What speed does iu *e3it uqd2x,n 7r*xat acquire?

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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 4j;k5ora3 f y*1gayv(f*w t viin 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 cb+0 6dqa1er7sv3veapc d; /t difference of 500 V. What is the velocity of the electron aftertace;d6 3+qe rpsv7ba/c01 vdward?

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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 objectjfju:2gm m 20vws px:mrblvvwq;(-* ) is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of the potev qf mrws2jl):;w-mvxv:jpum ( gb* 20ntial 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 ek e4,8o2lc*4adsdbbh yx(m 7klectrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric field between the pmd* o7bk4l a4dsek hb(,cyx 82lates?

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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, wif 23 )auwu ogq5b7+7fpxt 7bbwth a magnitude of 500 V/m, is directed parallel to the +x axis. If the pfg owq7b23a5 wuxu tf77bb)+ potential 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 of 50 , arqc+ioe85 .uroz0wN/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west ue+w i.z ac0 rro8,oq5of 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 an electric field of magnit strqw-47k 1i ,6-cn zl/y.r5d9f1p asmiimj sude 3.0 V/m. What is the change in kinetic energy of the ptc 9w rk11pn.6l7j,m 4a/qss iz5is-ymi-rdf roton?

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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 conb5 t ygu-o1ahzcud*0+mk11xbnected 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 distance 1.50 m from the positive plate, what is the potential difference between the initial and f ct1b+0yu-1m*5kgu1hoz bxdainal 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,b)y5b/0wx(1oh vlo vq are connected to a 12-V battery. An electron releasb(bowh 1vvy5 x/0q)oled 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, 0pwzu*zijd6b yl21hh t2xd d -2k,zp* separated 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 distance 0.050 m from the positive plate, what is the speed y2,kw-26hzdid2x blup t*j dp1zzh* 0of 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 the east. If th 3lg;xmdvp 8c.e voltage mx;3 v.8mpd lcgeasured relative to ground at a given point in the field is 80 V, what 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 electric field of 50 N/C directes-wk 6:xnic /nri7e0j d toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is0-w7ix n :ns6icjer k/ 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 acquirtvqbu5quq 7/;uj1 c*xe a kinetic energy (in the aqvuq*x 1uj5tq7 b /;cubsence 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 at a i8 khdyo*7 xu)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 a meter stick. Find the electrical potehy oa)(dic0p)ntial for the center of the meter stioc )d0y)ip( ahck.

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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 m, 0). Ivl1 8-7q )y3ap)vpqabmj:s im f the potential is taken to be zero at infinm:plq8)v vy q3) bj 7asmip1-aity, 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 (9h dgx0 6ee4sd+m5h +g/3fmcckpt *xp3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potentia4px6s5ddg pgh30*+ehec mkcfm/9 x+t l 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 at (0, 0) andhqkmnk )rz;1/:as y1m a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bringm m)1kh: /yrsqkz;na1 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 wnw)l+7nj 0bc0e3fdi of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, ad0 l)e ni0+3f bw7nwjcnd 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 place nfn8* eo /nrj.wv7*3vp-yxle d in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC an7xwnp/l- y3* .nernf8evo j*vd -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 (charge +2e, m6cgrf f (9r z4zpqjt*-ass $6.64 \times 10^{-27} \; kg$) 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, eachl 1* uqy4ythl( of 2.0 mC, at the corners of an equilateral triangle of side 2.(*tuyy1l4l h q0 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 charged to 10ntb -(caa3tmy1he:lfc9 b7+ u0 u 1y7bftl +(-hm:93acc a etbnV?

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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 plv, pzz;ia bx.u v2 xug55, n ma:6hoqi,3upg6nates 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 puhzb3v )dt.r- w9 rtra(79pzelates are separated by 0.050 mm. If u9pzrb 3v-td(zr r7t h.)ewa9 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 pl yf8y)8t5z;gly ur: kcates 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 cm. If the potent3u4fqz 1 f4uorial difference between the plates is 1qr4uzf 3 fuo42000 V, with the top plate at the higher 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 connecte9 a(i mr/g:cwod across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How mucaw(9 mc/oi r:gh additional charge flows from the battery, which 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 p2a 1c6 f.c 3iwoq1q9nexzoau :laced on a 15 mF capacitor. How much energy is stored in tuqfa c2o1i.:q 61c9ze 3xwnoa he capacitor?

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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 in the capai3r4 awq8:sx kcit:qik34rw8 xa sor?

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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 capacitor when it is connectelz/.usk tiypkbyca. 72 xkc//z5l, 6 wd to a 12.0-V battery. How much work was done in charginz7xbltlp.s2ki c,a .6ky/k/ c5/uwyzg 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 thasx vsld7 .kwm z -by./ky63bs2t 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 consicxpgx(vxz110k r-kv 8sts 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 capacitor consists of plates of +6k w hnsh n pqd34e+br;u7n2barea $1.5 \times 10^{-4} \; m^{2}$ 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 .tp m0e fb u9w2ii:/e2lorso;x*t9r hof 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 capapp) v 6:htjyo(ftq(;dui2 9e jcitor is constructed with plate area 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 with plate area oodu)17h(t( sk hu4or4nqr kq7qf:cs - f $0.40 \; m^{2}$ 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-Vuhjbe ak4/5:k 3ux j9d 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 cu9 4ju 5:3kkd /xhejbaapacitance 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 itnjy2e t(w1 htki(8)battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates (t8) kyw(tthie 2ij n1is 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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