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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.5edu.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.5edu.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: admin  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 ver ice(kg4m 7x)ctor?

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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 b::5u8te) xtv/b 4mulxnx2s ois 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 insulated from ma1rqrk;2 h42csqw,-7y ptc6 :rcun t their surroundings. Object A has a net charge of excess electrons. Object B is groucct - r pusq;,wmrc6 :tk2y42arhn7q 1nded. 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:xf ,7xg(7sglv n6os2y ubwg; qtbv:,i(8 gman 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 ua8.-d0q* ed yu) apwymm5e1 uto 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 conducting sphere. Theya1;w)/fqvq (gworf /c

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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 potenti, uof1iwo+o+* *4 a*gv dikhjlal difference. * fku+*jhi g vdo+41la ioow*,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 points are at the same potential b 2ow:/rtthm) 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 alo8lo:wq9g8 aqb frnb43ng an equipotential surfacbwf9q q rnlob 8a8g43:e.

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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;gj q y(wdd0-j wsd,8qjyua0 bu h*c,1 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 dry/ )90-laoxyr) avb to that on the electron as a resul)9ba /) ay-xoryr lv0dt 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 nl u9)7yuz8 )f0 5 cis+prkpfha 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 correspon,p5h7 qbb q+ lkfd cn7dw w0hz3e0q4/tds 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 zceedh:+ b,x 6q9 i4ox2.0 m from a positive point charge is 100 V. What is+h9 qobe izc,:4dx6xe 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 aqto7 h iw9v-w3pv* (cr distance of 2.0 m from a negative point charge is -100 V. What is the absolute potentiarp(ihc v 7tw3w*q 9-vol 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 aous hyua b,8gnv9,0z6bfb h2.t the exact center of a square 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 ezus8b6hh0 fb,b ug. 2,van9yoach 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 center of a square is 3.0 V whh)3su nm1r/6phcbjw52mlh;rk 6v u3oen a charge of +Q is located at one of the squacw2u u 6 mjm3h )ko ph;h/blr36vn5rs1re'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,x5u +kdvmxk-mk-j7ki y2yx 9 of two 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 iwxvwkn g8+ k54 a u3*yux)niwh5n lqn*2bn4:gs 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 every6q6kx7fjy a xa-.e2xy respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the l yaax2676xjy. f- qexkarger 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 capacitance of C. If 4sn3/g1mnoh6 .xjyhw the area of the plates is doubled and the distance between the plates is halved, .1jmy/w n sn3 g6hxh4owhat 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 /y( :dkageackh3kt;s+a9 ly ,capacitor fully and then is removed. The plates are immediateea :d9gtahk s(+alc kk3;,y/yly 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 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 weakja3ut.h a*mvk5+ xs,o)mqas( ened, the capacitance of ,*(tmsa+hs 3a)u5m.xaqok vj 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 voltaz4 pd;8ixsr1 age by a battery as they are pulled apart. During thip 1r4ia8szd x;s 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 maintained with cons06qv.fs c6tbv:edf t;tant voltage by a battery as they are pulledd.fb 6;tcq0 v:sfte v6 apart. What happens 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 oie );js4/rqogf-re.5k*hy vmf a capacitojke5ri/ .s)vq oefmr y*;4-h gr.
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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 p4 ec*ee uh 70yoq i+)o/z2lvmxaper is placed between the plates of a capacitor. What happeeh+vi/*oo)c4q 2xyu0zl m 7ee ns 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 paper0 q-xa4qo2z-coe ef8i is placed between the plates of a capacitor holding a fixed charge- zic o 2-8x4faqeqeo0. 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 connec t*n0l8ytr tn3ted 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 le ntrt 80y*ltn3aks 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 cha5 ibw5/l vsrx9rge causes the energy stored in tbr5v /5six9lw hat 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 ca)zm1q emece0m do(* u)uses the energy stored in that czm*1 uqc emem0doe))( apacitor 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 toe wz5clh4gs +h*af1: r point B. What is the potential difference bet5haz 4slgc:w*h re1f +ween 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 thew,vzcd3x gq7b(7g l a; potential is -50 V, to poi(a;vl73gc x, d7qgzbwnt B, 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 accelerated through an electric po odts:z 2xka5kh/v *9itential difference of 500 V. What is the kid/:axzhiko k 592t*s vnetic 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 electric potential differ zsh tjr3+4t3 k1b+dm2rmru ,aence of 500 V. What is the speb,4s ah+1 3 2utmz rdrjt3+rmked 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 7a(vb /qao,czV. What speed does it acquire?/7q vozac,ba (

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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 qd ,1nkp ;u6qbV do 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 kjj )a0;7 je;i 5lwexk+ub/ki33oh s aa potential difference of 500 V. What is the velock7eje 0 ju/a+b;s a )kwi5k33i;l xhojity 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. Th1yj0qhd2,sjf 7 +gi xq09w(lyf,i a8bssfka8 e object is accelerated from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magns,ybs i78qyaid0 qgfxa l ,8wk2+ jjh0f1s9( fitude 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 differ qj ti76iybl*(a8uh(l ence between two parallel metal plates separated by 1.0 mm. What is the electric fieldl l (jbia768utqh* (yi 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 obnsk q*/x (q/gf 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0(g/qx b/ nsqk* 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 N/C directed toward the eafmgokhm(ic g:o -g(f9bmrg :ni0344o w9la 2est. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a poinmi:foo4 k(eima9ml o2 3 gnr:gfg4-gb (cw90h t 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 dicy o n ea7rr5gqj931c,2xs 9darection of an electric field of magnitude 3.0 V/m. What o c3 c15sr9,x7jandagy9eq2ris 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, separzk7,ir*cx oi4ated 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 t 7x,*icri4ozkhe 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-/2fug+p /g 75dp8 j8tfpgmlb0pivl b)n9+yz gV 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 positiven piyz8/f 758 d09jb) t+p+/lgfg gg2blvppum 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 .ofds.e.2m* lxwe t zah/6 q,s5eozvu 6 kb.r6a 12-V battery. An electron released from rest at a location 0.10 *bzz 6dwuo5 m6t. .2rl eskxfh/se 6,.voae.qm 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 ofsn0llk9fro r*1my :c+ :so;a, howi.h 50 N/C directed toward the east. If the voltage measured relative to gro ys1ho+;n. il lwc0aok,9 :somfhr: *rund 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 diresw2krdv ;4u h/cted toward the east. If the voltage measured relaturv2d 4 /s;whkive 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 acquii w1lr8kfv leyz:(m25re a kinetic energy (in the absence of fr1y582l w:f(vk rlmeiziction) 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 d+3eab srpw 7q jh,zi37istance 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 elh0 kro b1r/aj -daegb/2fyh95 tg+26 ys2mbmcectrical poten a1jr9r/y2g6otfb e 0cyka+/h d52g b2sh-bm mtial 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 -2.0-nC charge is at (3.0 m, 0). If the p(gxc :2 pjk hlmziv)q8.:mp ,fotential is taken to bp:x:fmjkg )h l(q2 .v pi,czm8e 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 r kb(x99x2p b)x95gv pwm )tbkpb.qh,charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the wbb( 9mh) 9,kb)xrpv qkxtg p.x5b9 2pelectric 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 (3.0hag4l t;rf 4-i m, 0). If the potential is taken to be zero at infinity, what is the work required to brin ai-ght;r4 fl4g 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 chaq5jczu,cpw/)ysk n;( rge +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle ifs); 5wcj (y,nc/ukzpq 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 pp1. whhr8*akwlaced in two diagonally opposite corners. In the other two corners are ahp w8kh1* .rwplaced 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, mas.x-dlcg-r alt j b5ma3q2zr (,s $6.64 \times 10^{-27} \; kg$) 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 ch bwuze2j0q0/by 71zty arges, each of 2.0 mC, at the corners of an equilateral triangl0 72uwqze /1bbzy0j yte 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 pl*t u5(r vpy )r7kqupg4ates of a 2.0-mF capacitor when it is charged to 100 75* pvuut y)qk 4rpr(gV?

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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 plaxu3) tgzuj(y(tes 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 otjj7v+zie 2ij 79 /wexwb ;3dthe plates are separated by 0.050 mm.+/wwz9bti xvjjde3j2 7e; 7oi 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 has2eu.6 ay pnox9v f1a9r 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 cm. If thb lbiqli; z7 378.chnde potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between 8dblq ih73n licb7z;.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 acrouq,sx ht/r2 cyc0; 8p ox.zd0nss a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much addit. co dh8 x/us crxy;pt2zn0,0qional 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. How much e sq4x4vpz-ln. 3qrug9nergy is stored in the l.49zqg3n4sxp - quvrcapacitor?

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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 is1 f gide;n, a7gg// q.ljvq*ai the energy stored in the capacitor? */.qai eq l/1;ajvdfiggg7 ,n

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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 capac 3lg9a pim(.fii9 e-w j3sl)qpitor when it is connected to a 12.0-V battery. How much work was done -(spi )lg.m3 q3w9i9jaipelfin 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 isp ffq 5g: av,q47 ituqs0s.q+p charged so 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 of plates of areabl 78 u (j1 /v3myq.de8viusq;q e)lyr $1.5 \times 10^{-4} \; m^{2}$ 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 consisyn3tbp-sf h8u n bwc8 s1t5v(;ts 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 consisoikb8nnt; z e y.77jen4j52 vrts 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 8xtptji9t,k ,n s e(r*+)eij iis 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 capaci79806qqinzzk l +mpptw ;uc5t tor 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 coc-lvt , and9a321 njamnnected to a 50-V 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 capacitance of the capacitor after vd3 1n-nma9aja 2 ,tclthe 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 to7qz5n7. l +d06 ueubd(zktb in a 50-V battery and becomes fully charged. The battery is removed andt7lz dz( .en6uid5 u q0b+k7nb 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 the capacitor's plates after the slab is inserted?

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