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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://autodiscover.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://autodiscover.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)0cyrf4vz*0hmv-v1 tk l - wia0fxfr* 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 ;l7wb q r8j:hb4sht1pa

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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 insulated from theirsw,u hrm-yl*rpq53v* surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at a higher potentislhwyr5*mq p-,*u 3 rval?

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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 directio2axip re1og87uuf , +on 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 0- a:vq/yz1+n io qdk4 ez5kqnpr2;j kin a direction 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 placed on a hollow :ebtx uv1 )k wly:k6i8conducting 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 ;7g/m b,xxe*tvqz a mqf h/;*kaccelerated from rest to a speed v by a 500 V potential differencqm;azb kv gh/fm7t/ x;eq,x* *e. 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 all1- ppvg pam,t5 points 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 from p(tk citk7*w rww2(ljx;j 8d ur+m3li 0oint A to point B along an equipotential surfac87wtkiuldr kw;(02lj 3cw(tx jr*+ime.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface .e6 m)vj 7lzd-mi oxvxw4*8knmust 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 carry kylk6+ cj)z 8r ix18dfk40dzftbp3k (ing a charge equal to that on the electron as a result of moving through jkl8f1 krcz p (b dt3 0+kzdy)fx468kia 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 .jh)ia j qr-/oiw*qw; 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 corresponds to(pvm 3s p gzyqs.p21g0

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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 ya48w(21ed s/0 lxse) sgzxft2.0 m from a positive point charge is 100 V. What is the absolute 0 gy1ele zt/ d48xf2ss (asw)xpotential 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 point charge is7t6+j-xh- -bsyqgz 2fu n9hlmz6 px+5-ne ul b -100 V. What is the absolute pogn 7+yhue fj-5 lzxq-b+x6-z6hu- pl9ts mnb2tential 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 whenb a *z)cqn7e :xnf6m(z a charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when z:)fbn(7cxmz q*aen 6each of the other 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 cen )e5qu,3m8gpt nrghw+ ter of a square is 3.0 V when a charge of +Q is located at one of the square's +q)etghn5wgp 8m u3 ,rcorners. 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 aedjp.))/ bqg az,fs b0re

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One coulomb per volt2 ywb:wma *s*kuogi 7) 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 identicdh( sg8.9x ouxal in every respect except that one has twice the plate area of the other. If the smaller capacitor hashogd (xus.8x 9 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 capacitor has a capacitancek*3 1l*sye:tznx1atdk,cd/ tl sp;l6 of C. If the area of the plates is doubled and the disdl xs;el1tkc nd1 * ttsa,z3lp:/*k6 ytance 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 fullz:yqxsw3+t pl w yt w9-i1: e2ol,e+cly and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of charge o3w xlel 9+1p:wy+t cizlq,y2t w es-: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 between tt 8h tlg ;j.lh/orczy7r ,*3evhe plates of a given capacitor is weakened, the capaciry3,lv* ro/jg.lz t;h7 ce th8tance 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 maintainemt lcrio wwdajix,)./3h4() n d with constant voltage by a battery as they are pulled3 miwi.c)w4r,n/( ltd oj)ahx 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 maintaine+j4 o 7fvwf1m(rd8tdb d with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric7(1o4 +jvftb ddf8 wmr 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 ajn /5 5vld08csfphm z gzj71t.dding a dielectric material between the plates of a capaci z5h7 zjs.cpdgn/j15v 8l 0ftmtor.
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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 tn-ro-f( c0bwn )xb-amhe plates of a capacitor. What happens to t- ) bw(-mc0r-aoxnf nbhe 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 gi-du5 -*.easzz3 ryb is placed between the plates of a capacitor holding a fixed charge. What happens to- z*gsd i5 b3-zruey.a 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 anmvo 6* 0q f(w6ngykl(fd becomes fully charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that nk nff* wy6glq om(0(v6o 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 e3pvwkp 1ijp++zy():wgkd4yjo (bn e ,o;2dmbnergy store23;dgk:bjwbeywp+v j pi pymno)1 ,k( +o4zd(d in that 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 the energy stored inge x;kzg-(ho 8qf qhl,lg-7h 6 that capaci-ghq l,qk(l8f;hh -ggex76zotor 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. W 3)enukz r0h*wfkgn89hat is the k*8z03n fw9regu khn)potential difference 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 pot+g7uu5h s -usf c+ -ph1rvr2 (,oghvteential is -50 V, to point B, where the pot -h2 (,r+s 5uv-u oseggt cp1+f7uvrhhential 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 accelerated through an eo2gfb+- h( zamlectric potential difference of 500 V. W(zahg +b -mfo2hat 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 avts (,6 eiv0sen electric potential difference ote0svs (ei6v, f 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 falls th z,fd3d u0 ) ex;ehxrad:a-3pbrough a potential difference of 1200 V. What speed doesab-,d:d0a hpxu) f; xder e33z it 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 dou7r3 1 0zj5g w/knwg(0lqkcdh 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 throupbv*g6 y3j8ovgh a potential difference of 500 V. What is the velocity of 8p6vy* b3jov gthe 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 accelerated fr t02pwfdby3ky(( cil 7om rest through a potential difference, and7d kib 2 tpw3yyclf(0( 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 potential difference betwspd:28:f lh)y hm3aehm-2 gxr een two parallel metal plates separated by 1.0 mm. What is the electric fh3hp gay-m2sfhd :re2 lx8 :)mield 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 magnitude of 500 V/m, is directed f rzel jqo4p/sl/b ur82:5ct-parallel to ttb-52:j 8scu orlfp/ 4/lezqrhe +x axis. If the 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 o401 syxn4 pcdsf 50 N/C directed toward the east. If the voltage measured relative to ground at a gdn4y0p1xssc4 iven 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 an electric field of magnitude 3.0 ::z 5)sz rjzry50m lyyV/m. What is the change in kinetic energy of the y)50y :r:mzjyzs 5 zlrproton?

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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 elx8rc9 (.q g3 ce:lwgm, 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 1.50 m from the positive plate, what is the potential difference be.(g9rc8q:c3w xeg l letween 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 connecc* bm1b/9tf2 qvrk5lxi 93ulcted 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 t2 uxbliq 951vb9*lcrfc/3k tm he 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-Vb3 nbt-vy4w/p ,fxgv. battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron tv-bb3. wnx4,vpg f/yarrives 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 fieldi*r7ql z6y s88u9kw3 smtenk + of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point inkyqk9n+ 8lmresuz3i8 7ts 6*w 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 g8j7 qnwwy7xrx1 9*bz 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 ther8y7wq1b zw 9g7jnxx* 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 gwwnno.0;ji-q3 t bn/V, it will acquire a kinetic energy (in the absence of fg.ntwqwj /no ni-b30;riction) 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 potentialvyl*vhb)(xw6 at 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 a meter stick. Find thea p wf;s5i1uz, electrical potential for tf;p5u wa1 zi,she 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 -2.0-nq5 onikt (w+f( aj rs1eoxhh h,l1;v;z5of07 wC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric z ( ,hjwwxhatr;+osh ;iqk5f 0l1 7fvn5eo1 o(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-nns5+ ivkaapm t/ol 9arbn)fcb:)+ 20e C charge is at (3.0 m, 0). If the potential is taken to be zero at infinity,) nrm+9 5f a:ok/s 0b+iactan)e2 plvb 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 at (0, 0) and a -2.0-nC charge is at (3.0 m, 0). If the po :ubz w*5 e1y-zrfgpg+tential is taken to be zero at r w1zg*b+eyu5 gf-:z pinfinity, 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 +h j0vii.bpcf 2e j5(8t.mzycat the corners of a rectangle of sides a and b. What is the potential at the center of the rectan( i8m2i.h5zjb 0evp.y+jft ccgle if 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 mC are placed in two diagon9zct/ wp*rwqrw9ps1( ally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in t9 *ww (pw 1q9rs/rcztphe 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 (ch,g,rh g 2fedzv3:jm: v0b7 xtxarge +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 necessa)72.hfnhgtr: 0dvi2gu; zn bhry to place three charges, each of 2.0 mC, at the corners of an equilateral triangle 7 )n.gh0rvtzid2fb :ugnh;2h 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 tx*im hmfq9wu3t )6+vqb91uc, nn+a5igmjr-khe plates of a 2.0-mF capacitor when it is charged to 100 i+f gq vm,+bxckm 16a3-j*un qu9hin9 rwmt5)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 ppp.b kq 7dwf*3e3ftd*lates 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 th9o 9 ma cw;3otbqbu bqi-i0q1,e plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is 9ib,qb ;c 039wqbtuo1m -qaio 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 cape( vwat; - yy8j+yfan+acitor 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 p.*j fq)kxnp 9ilate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric fie nqfp)xj k.9i*ld 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-V batfn3u +3eq/smyc 3j- iotery. After the battery fully charges thon- qs3cj33y+u mefi/ e capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much 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 placed on a 15 mF c +k3wr,pvt l9s/9c i7pi,dxolapacitor. How much energy is stored in the cap/p,,lstii93 k vr od xc9l7+wpacitor?

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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 65ttbu ) othr)2kjoz06x, pyfv lha-6capacitor)h65al tt 6, jk6vpbz)fo2oyxt0h r-u ?

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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 cl( nc2qq03lv;q ow/wc/n k+jllrp.7 zonnected to a 12.0-V battery. How much work was done in charging this c. rc+ wl(jn qnqlvkwcpo7/; 30zl/lq2apacitor?

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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 th d0 tx6rdga2/iat 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;vxn 2rxtk* g(i940ycee n.khf 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 a-c6qcf9:v5b t -, xgbdage 9bwrea $1.5 \times 10^{-4} \; m^{2}$ 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 consj t5y3ss 7m6lyists 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 c 2zs,nw.6naqj onstructed 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 caphq-t j4pzsvmb5 )x+9 qacitor is constructed 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 fully chs9uufq dzz7 a0 (/614bgcvg orarged. 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 capacitance of 0ga4gd / 7uv 9 (sc6oquzzfbr1the 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 charged. Th4s-( wxspzyp9rl ra7fnn-a* )e 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, whats*r4ap 7 s-anf9nlwz-pr (x )y is the voltage across the capacitor's plates after the slab is inserted?

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