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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 vectdx-/k4j hm /nw ,7wc5elahllw na 1;t6or?

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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 iuxz ,vvzjx+*tg5 npc5 mnu ,-;s 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 their surroundings. Object n8r5a 72mpf ;e,hzlapx+ soy:pl+ km 2A has a net charge of excess electrons. Object B is grounded. Wh 7 +fa2x;p+lph,no2mzymsa:r5lp k8e ich 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 direction of the sn42pk -n c)ohelectric 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 opjpkjw.o i f9q5,py12 aposite 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 plac(0 ayf1wct*pced 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: gx-j4dceuq3 accelerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will the new speed of the ball q4xgcue3d:j - 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 al.ngvqq j b)05fl 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 m8h.*ew02h obh tmp3ko oved from point A to point B along an equipotential surfaceh kbo wem8oh0*23.ph t.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mdqjx48f *ik x qm --,eki)xn0iust 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 equ; jdt:;mv h7wgal to that on the electron as a result of moving through a potential difference of omv hgdt ;;wj7:ne 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 ogin9my60 aa,9x) b naof

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt corresponds9q 2pqs8f2 xut 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 from a positive point charge is 10 vp,26rx*s xiw0 V. What is the absolute potential 4.0 m away from the same pwx ,xv6s*i2rpoint 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 disycz,0 jn3-h qk -qxir3tance of 2.0 m from a negative point charge is -1jq 3- ihc rq,k-30nzxy00 V. What is 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 square is 3.0 V when a charge o63yi(bvst:8wo *shfwff9u 7o f +Q is located at one of the square's corners. What is the absolute potential atowo(s*f st 6fw8: 97ihuyv3fb the square's center when each 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 when a chargema8mjx* r vfx59lfq 9(h-w/ zg of +Q is locatefmqj a -lfv95 *g8mh/(wx9zxr d 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 alwaysto 10+v0mpyss consist 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 voltwf5 k ysl*lci .n/n,e; 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 identical in every respeor6b6ie ,a p2anvj7:ect except that one has twice the plate area of the other. If the smalle6oji ap7 :v6ebn,2raer capacitor has 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 capacitance of C.qe 3jdjs s,)msrd/1 o.9omj *y If the area of the plates is doubled and the distanco*j,o ss9sjj rdy.13m/m) eqd e 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 fulloep8h;- dn(gly and then is removed. The plates are immediately 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 bepen;(8l d-hg oing 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 9l33xa +y el4nal-xfy 7 h+sdcweakened, the cap 34s axxcnfhy e7+d+yl9-lla3acitance 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 paralle.pbl sz0dq7 0al-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on z b al0qd0.s7pthe 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 constanh2 ft z.iey-w(b3c4q1xt k4xx t voltage by a battery as they are pulled apart. What happens to the strength of the electric field durinxy. (1fi4x-w q2h xzc4k3ttebg 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 vb(2l;e vdy:wc(fivns6w n-3 hcq 0n7the plates of a capaccv :n(-eyn6lwcq0bvhn i2s w3df7(; vitor.
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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 plaksx(q(ng fi :-tes of a capacitor. What happens : ni(-f(sxk gqto 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 placed between the plates z yvsu1i) 35noof a capacitor holding a fixed charge. What happens to the elus) y1i5n zvo3ectric 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 bat+m 9uu)wtkh 3ptery and becomes fully charged. The capacitor is then disconnected, ap9w tuku +3hm)nd the separation between the plates is increased in such a way that no 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 capaciter11) ijua t*l hso4 lwu669lbance of a capacitor holding a constant charge causes the energl ilw14b6oj9)6 lethsa* 1uruy stored 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 capac+mfb)g) f nf(gitor causes the energy stored in that ca g b)n)(f+mgffpacitor 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 hb * 6b jw0v2uh6,n-g5icsscmcharge from point A to point B. What is the potenuh5vsg h cbc s0m ,bn6-*26ijwtial 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 potentiaxt 9 )xz(5fw s9lxbu: ugr(yh)l is -50 V, to point B, wt( y r:bxxgfw()9s59lz)uhuxhere 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 poteni+ipdrfof) ko/g) ,(btial difference of /f+oidp) obfr(, gi)k 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 electric pot*5 tj/9lm b*6uiwwakg ential differiag9klt *w6m5uj*/w bence of 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 through a potential difference of 1200 V. Wh,8mytcd vh8w ;sbu:l0at speed does it a8 wsd;lm,08tv chyb:ucquire?

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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 movin nq3y)d y7clz+1r p3g:a x oon1l+*nfxg $8.5 \times 10^{18} \; electrons$?

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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 difference of6u l 65u*(gcezncb) gg eg5b0k 500 V. What is the velocity oguuk5eg zgcn ) el c6b05g*b6(f 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. h00tgf1 jfvt 20 mC. The object is accelerated from rest through a potential differen 0vj.fftt h01gce, and 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 electr(z.-yw5.5n m4(p.je1wjj )ccsl9g ut y iueryical potential difference between two parallel metal plates separated by 1.0 mm. What is the electric field be5(i) jmu.ytj 9cjw pu1( e n.eycz-rlsygw54.tween 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 q1kih/pgup;v z98r-v of 500 V/m, is directed parallel to the +x axis. v1uzv;ip 9pqgk-r/8 hIf 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 e +*eqsga ,g7 -c+tox0okgqrg 01h eb3hlectric field of 50 N/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 poio0, kg rqh+ ba-gsc3x gge7ho1e0+*tqnt 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 fil:n s5ct s90,vcq7codeld of magnitude 3.0 V/m. What is the change in kinetic energy of nssq57 l0 cc :cvdto,9the 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+(a )g .zzjn m.eo;agm, 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 pote )mz; j.g+ge omana(z.ntial 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 muxs+c1 t d6*jd:rlyz2 t8a g vd/3pna), are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When tu s2tzgn6 t 8l*d:3ad)cxvd yr p/a+j1he 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 connected to a 12-V battery. *qh4g n/kf)ja4vrn.dwu+ m*h An electron released from rest at a location 0.10 m from the negative n wgqrjkdnu)vmaf4 + .*4*/ hhplate. 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 elech-t/x5rdc 9r ftric 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 voltage at a point 1.0 m directly east of the poin xt9hr5/rc- fdt?

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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 t+pke f0d whv,9l9x)c6 -xsfsdhe volta )x69es+kfdvw-l ,c9 ps0xfdh ge 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 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 potentiakr lbrnwpy2:1/h ii 0f4s32mhl difference of 12 V, it will acquire a kinetic energy (ih1h4n/pim2k2br wf : 0yilr3sn the absence 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 potentia/wrd-lxyv;ke 2 wy/ 7hl 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 me 6a83 ami7wfd1+p3wcx 3b:s-blw hfpqter stick. Find the electrical potential for thecbw31xi-fw dp6ap73fshl3w 8a:bqm+ 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 a a;9 ;ddpc5)p.zpe ewqt (3.0 m, 0). If the potential is taken to be zero at infinity, what is the electric ppzwepqpda5.d;c 9 e;) otential 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) andtm4o tak41zvy -g3tbe u/8d0q a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero zb tam3q d-y84v/to g14t0k euat infinity, 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(cq.uv, cljidb;1 s4u is at (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work ;i 1ccj4q,b(.u uslvd 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 rectain50pxb , 01lolo3jtungle of sides a and b. What is the potential at the center of the r0ionxt,l uol0 5 13pjbectangle 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 s;,442u+wfr d agqr9(ztr d9 euw+mcoz8s7 zi dide. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are plac9rs+z4 7zdu(z w+ f 9 82trcoda4,;ewrdqi umged 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 +2egm5+p-tq oar4 , 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 to place three chd ,e wl(iu/pf;arges, each of 2.0 mC, at the corners of an equilateral tri,ul/epdw (fi ;angle 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 plates of a 2.0-mF capacitor when fl8 tu i(x5gau3es--t it is charged to 100 fx- t uu3et5g(-aisl 8V?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate cap56 -pb6*hjak4 xxavq4eszlg:s hss, -acitor has plates 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 plated ;*-8odb6:*nyj kygrp0ucav: y an/k s are separated by 0.050 mm. If the capacitance is 17.3 pF, what ;an*kbd nrg*u8v yo:a jy/ dk0p6c-y :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 platk(+teyi ap6oj* ft4,s .hk4okes 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 prn;wfonpj yk;d5 (wwn8 7/,e*hh e+nilate 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 fi en;hdwk ,7 hey f +5owwnj(;*rp/nin8eld 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 adh4 /dew pv4iz0j uw -3hsm*;gcross a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformerhu0m4s wzp- d gh/3v* ew;dj4i 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 k/g. g:pm ol4nq 6)kbgmF capacitor. How much energy is stored in then m:gol6bp)g /4qk .gk 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 capacitorh:-u4xn ;cf tg. What is the energy stored in the capacitor? x4 :g-;unfthc

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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 vv )5uin: ljze g0mbii7(vb52plates of a capacitor when it is connected to a 12.0-V baigu b0evb)jvni5 (vm57 zl2i: ttery. How much work was done in 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 is ch5 yt zrve5rxz97f* 10ibhb1 erarged 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 o pp9-jsu* t z2p3uqk,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 co *j chthz(:2v vej/ro(nsists 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 plates025 g7-xixof lou)ifw(r hpk 0 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 off ifgi oo0t..3,,iabb $0.40 \; m^{2}$ 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 plawv 7laqk 8 0-pi(tkf0cte 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 connew kflodibz7cv:i j.n5k :,4e:cted to a 50-V battery and becomes fully charged. The batter.4dej ink:bc: ok v,z5i 7lwf:y 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 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 i:z l6*14 y nu7ibxdlz,ygo z: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*4l:ziynilx bd y1ozz ,6ug7: a dielectric constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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