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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 ()l-hw7 nga:iz/1ok4 wvcirk wb (oz1 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;:mn p/ tuzfbo7qt7q, 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 insulat9-b edi7 iampm( ;edi-ed from their surroundings. Object A has a net ch 9d d ei-mi(;-pbimea7arge 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 directc ,lryq tyce cu.;s5kdanwm,7 105 uv)ion 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 eleci.q:lgyx ri9, tric 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 conducting sp8k r0bvr7x ;akhere. 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 r1bo1 f1u khk(ov6vt q8est to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed ofq(vub8 6k tovf1o1k1h 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 f; jo t8sk(*5mat6bshpotential 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 py; 3b mrok ,8njm/xz)zgc(8r an equipotential surfaceo,n8rbm/ x;3mk8pz yrc()zgj .

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfx *;bbpj+h*ujace 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 on themt 36 vvx861ct mtg)a /orh8jb electron as a result of moving through a potential difference of one volt is referred to ascam6gtv/tt xj6b18r)3m h vo8

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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 acltg31ek( 8tl 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 corresponds raqcp2 lk xlzdt) m -9q5:x9pf3p8;jito

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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 ap ,+h* cezo0 pe y-:8kqix;rma positive point charge is 100 V. What is t york0pcemh+zxp:aiq8-* e,; he 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 t xign , .l,ma)d57miz2.0 m from a negative point charge is -100 V. What is the absolute potential 4.0 m away from the same po5tnl zim7ixa, m.d ),gint 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 charge o9y xl0 *lbki,rf +Q is located at one of the square's corners. What is the absolute potential at the square's center when each of the yr0*lbi,kxl9other 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 is 3.0 V when a charq*i pi:nei(m-7 v4f bgge of +Q is located at one of the square's corners.nf7igi vm4*e-pib( : q 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 thatjyktk:nu0 lbikb+;uc4 3pv31 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 is -l x(v-crsje -q e4he: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 every2j4btmfl*9 f ec43ddxjj*) vw respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one has capacitancefm32)*d*94vw lx j4jf jbcdte

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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 hasjg )ydjq+v.f,xxji .pcw)/d( a capacitance of C. If the area of the plates is doubled and the distance between the plates is halved, what is the new c).)fvd.(y i +jjp,gqc w/xxd japacitance?

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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 capa0o12ejlz 2d dewcc.8 r5)mjrkcitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconn e r c 8jomez52lw)jdc021.rdkected, 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 between the plates of a given capacitor is weakened, /cc,1z 5tdur*/ d wywcthe capa/wyr1du* 5z/dc ,ctwc citance 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 constant voltage byl v/lb ms9;te, a battery as they are pulled apart. Dur,9me; bt lv/sling 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 parage-8o5g+ys ea vk ,oi0llel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the ele,s- 5eeogk8ya 0o g+ivctric 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 mate dkvv*f wp 8w)pb2lw3*rial between the plates of a capacivbp wf8d*2 3*wlpwvk) tor.
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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 papvdac t8 ,jigj/7- kcie3vny/- er is placed between the plates of a capacitor. What happenvj/y--jn8kc/gci 3ita d, 7v es 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 p dw5jw9 t+e8ag6wf1a wlaced between the plates of a capacitor holding a fixed charge. What happens to the electric field between the+ 8j65f19t dawww wgae 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 q:(jpv10eqvia 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(eqqpji 0vv :1 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 hol pv8 *1: uiv;dxfznf4lding a constant charge causes the energy stoz*u: vf8inxl14d vpf; red 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 givegwl *-9e 7 ;,bfi6oqyipkq.iyn capacitor causes the energy stored in that capaplefiw6 ii-*y, o9q 7.g;b kqycitor 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 poi 6bh2*s7olh/oes v 8rmtt4nf 9nt A to point B. What is the potential difference befhon vser 249t/*bl6hm7tos8 tween 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 elecu( )pym64b3 fpe*-kqa/m4e k nkfo1y0ndi j9itron from point A, where the potential is -50 V, to point B, w6feiyn3bkp/ma) y(j4 9qmnio41p*kfd ue- k0here 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 acceler5wczwqi1 r/t gu3fmh s:f.e :0ated through an electric potential differencz:3hwif u0: g5f.rqtm1wc/ ese 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 accelezkv;.lxr-g-lud : *7amxl3 kerated through an electric potential difference of 500 V. z3ak-x .dl*7mgk-l :vu; xr elWhat 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 potential difference of 1200 V:y0.epa vo,jy/xfnt i8d2wd7. Whav7 tdpanx/,:wid 2fj y0.ey8ot speed does 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 do in movyg5zjy: olbal, -x8h*ing $8.5 \times 10^{18} \; electrons$?

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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 acceleratsgy(d 94yah bzp; fhi2cv h45*ed through a potential difference of 500 V. What is the velocity of the elec52a bg 4y9hshz y c;hfv*(dp4itron 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 from rest d+n/c q3r3 ig -exa:att0yiw8 through a potential difference, and afterward the ball is moving at 2.0 m/s. Whtw iqrgdyea3-a t0:x83n+ i/cat 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 maintaindiqd:)6j xdmq ka:2m9 do(6x+kkp:ims the electrical potential difference between two parallel metal plates separated by 1.0 mm. What is the electri(pxk)dqk:6d dmx m26a md:joiikq: 9+c 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 magnitude of 500 V/m, is direc5 u6g1d 9gjvo+s5lha pted parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential atgavpolh9 s15 j6 5g+ud 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 towt+jjb20 7y wpghcdo), ard the east. If the voltage measured relative to ground at a given phdpot)2 bj wy ,7+0jgcoint 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 obn k -3 ucgf /o8npi81+t0blykf magnitude 3.0 V/m8btk-c k0f/1nigol+ u8nb 3yp . What is 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, separated by 0.20 m, ar-(-pmdo w4 8nnhbnoin h/z/l6nj3/ by e connected to a 12-V battery. An electron released from rest at a location 0lo-6 j(4nh wbno-b ndnnp yi//zm3h/8 .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 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 battery.owz qt4;6z 0hc 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 p4ohztzw 60cq ;late, 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 0.2zqmf7tcdd bm:-b6m:5 0 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When thfq mbmtd 6z:cd-mb 5:7e 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 the east. If tcfe-dhgx6rg- b yd-55 he voltage measured 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 poin xhrg-decg5df-y6-5 bt?

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a uniform elect;0+)bybi.o, jbzh3k-oxvr m cric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given pvrbxk,; b )3ij o+0hcy -mz.oboint 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 acqu v5xgaf dyb2)s)tr4h4eev:m a5 vd 9j2zjm;e)ire a kinetic energy (in the absenmeda5v:hj544v)e d)f eb)vy s2x ;r tamz92gj ce 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 dice m3or 0w+/tzstance 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 .+g j5shyl2r apotential for the center of tg 2r+5sly .hjahe 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, 0rq 7*.vlqga3l ) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric potential37r.la q*l qgv 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) antauxp88f+x3 n d a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, x 3xt+pu8an f8what 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 i khiak7-iw7aiggwm;8s 6 ah*-s at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC charge from infinity to point (0, 4.0 m)aih wi hkga77*;msk 8-6 -iwga?

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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 thed ((i( fx:vnj 2z.ejsf corners of a rectangle of sides a and b. What is the potential at the center o(jnf.j2d f( i:v szxe(f the rectangle 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 aqtt3w *v +dskgq*k :g) side. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are *vgq: w*dkt)qkstg + 3placed 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 (charge +2e, ma b69l-rp rc)6rew8e i7q303 koppxmd iss $6.64 \times 10^{-27} \; kg$) 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 cd vu,tkj0u5 u3harges, each of 2.0 mC, at the corners of an equilateral triangle of side 2u0 ,udu5vjtk 3.0 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 charvmo8rq gn;i9t4l2 :ptged to 100t8gq p:t2ro nm; 9li4v 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 platestpw7 z ahmyka(28(0s. xp.lujpp1 r0l 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 capa ;lsk+dae /yq 1kl,3+gpnkuk 5;eltn9 citor is filled with air, and the plates are separated by 0.050 mm. If the capacitance ku/st;l, ;nlypq +elge15nkk 93 a kd+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 h1q1lct skox+; ctgf+t1e41rf as 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 plat9bjrcrh0ns:g r j70fka6k ib)6-/ jbye separation of 5.0 cm. If the potential difference between the- 0ckh0kr6)rijgrb : bs9j/j fb 7yna6 plates is 2000 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 connected across a 100-V battery. An,z n57)iulb gfter the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How mucgz,nl57 uibn )h 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 capacitor: n+c alahuk,v1exg2r; ,q*js. How much energy is stored in 2qa xjchke;+nr:u,1vlg* a, sthe 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 *(:3aa saac m/2n g)4wc3ifebqnq i5i capaci cie*bqfn(mnaiia2:cg / 5awq4a s 33)tor?

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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 pla1o;-2rwqiu t ftes of a capacitor when it is connected to a 12.0-V battery. How much work was done in ch it1q;2rw-o fuarging 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;kgz3jb )auu sp 6or ikg89etg(6y* q8 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 of plate04 j ;tdzip zmyjb m)9/uz*o0ks 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 capacivjdf jz e:9 aiv:*39rbtor 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 platefhld*9m,r j8ns 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 construw zocv chh4*l)4w,u3 pcted 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 constructedik) -;tndguf8 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 charged. )f yk+i7roy )dThe battery is removed and a slab of dielectric that completely fills the space between the plates is insy)i )odr yf7k+erted. 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 batte 3o3fl,ww4o5turar 0q ry and becomes fully charged. The battery is removed and a slab of dielectric that crul tofo0 rq3543w ,awompletely fills 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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