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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 vectox4oe jy thk3) 81igv7wr?

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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 axevjts9e*p w0kbqp5 6bk)vsb . *mun).zg9 d,

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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 insulv. lv;ye4-qb1+ bnvhoated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Wh; 1o-.vb+el4y v hqvbnich 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 direw6b/ j089r7slawf jkiction 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 oppo hty 9hbhwvz085x1gr. site 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 conducti+ vp6oh k/f.:o uo / +phol/dmw09xkzwng 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 5 tmw,;u radxb -;3bra 2e/alxaccelerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V,l;xwa rxr a u5am2d3b;tbe- ,/ 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 is referrepb)nrw* n f yd1ec.g,tp vp/*.d 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 a6p 9;2x.pfyropq rh1xf;wlw4n equipotential surface.421.wpf r6yxf lh p9powrq x;;

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface mus-k8 :p4u mhewb/7a/kyol*p dc *ljl4ot 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 tg 0s(dpz57k.i+6( sieu h psvehat on the electron as a result of moving throusedu+ . 50e(7 gpzk6sipsh v(igh 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 a63yv)vw qye9w 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 corre,g69 h0wnjytva chv;+sponds 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 l+sb- 9yej oo*5 wyw2 6vxb(lmat a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m awalov 5yy*(2blws+jw 9em -box 6y 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 negatix)gma hq1-kr5ve point charge is -100 V. What is the absolute potential 4.0 m away from the same point ch ma)51r gqk-xharge?

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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 t-0/i g laukr0charge of +Q is located at one of the square's corners. What is the absolute potential at the square's center when each o/ki 00 latgru-f 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 potentihst(w a(h9; mcgkh 29yal at the 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 whenag(2kwt(h cms 9h; 9yh 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 98buc b +5;f,ewfng oeof 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 is a7h*zjuceuca/uh9pf /. si e45

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capac;ghjq3exn)xey .(lku /j +r; pitors are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger3 .rkn(ph);ygjj;eu xlxe q+/ 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 capacab514diu1(i)jw. 8km btq xp witance of C. If the area of the plates is doubled and the distance between the plates is halved, wha5 di1 4b1(.apx) tuwi q8kmjwbt 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 thn: de,(3vqbje)i e,r*9 jo wmgen is removed. The plates are immediately pulled e,*jmrb( n:vejw e)iq3dog9 ,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 theki:pe7kq a+*: rf+oekfj1s tt x y-v9( plates of a given capacitor is weakened, the capacitanceyk-vffp e1*+o t xk(atjkiqes:9r7 +: 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 voltagewpb18 / nd;pjup (k76lm*nfvi by a battery as they are pulled apart. During this process, the amount of charge on the plat (/lu; 6bnv ip1wfn8*kp j7pmdes 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-pxsl/3xb q9 k:u-k. u0bvq. jbplate capacitor are maintained with constant voltage by a battery as /b uk.s0xl3b p:9qjkxvbq.u -they are pulled 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 m(5xzuz 1e f8vfaterial between the plates of a capacito ff xvze81(zu5r.
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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 beh m)3 lq35gz4(sv7y6hikpq rdtween the plates of a capacitor. What happens to the 4 7dis lp6gr(3 q)yq5hz3vmkh 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 of a capacief n(ke:d ptb80kmz55 tor holding a fixed c:pe0fkdb58emt(5kz n harge. 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 c::hw* 69oyvkp0scaxconnected 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 leaks off. The energy p9yc: 06hvwo: k*ax scstored 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 holdingx9iy1dwo z5qnrcw-u9;;1 e b p a constant charge causes the energy stored in that cap5cuxwq e1 zd;-1bwyo pinr; 99acitor 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 acrosq 2qoguykij q6*mpns.;70hj ck +7rj0 s a given capacitor causes the energy stored in that capacitork.6hgkr7j0q2y7;+ jcq*nu mo sp0qi j 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 char (;q+rxov11 rve3 cxe2fs bf5rge from point A to point B. What is the potential difference between points A and cff1xvrb(xq r2eo e+5s1v;r3B?

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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 fz1n k-1*tew0l7g cag drom point A, where the potential is -50 V, to point B, whez*k ga01tc-17dlg enwre 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 m5 3:rqh :fxsdelectric potential difference of 500 V. What is3: :fxrqsmdh5 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 ele +hg8 us68p h+h/n,swfkc 1zvlctric potential difference of 500ssv 1ng6+f upwk +zh/ch,8 h8l 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 h.rie jd2vh0: kj(n8ia potential difference of 1200 V. What speed does i hnj0h:di.ver(28 ikjt 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+qp6k kk j*5qt 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 i*+*91z 3h; suu vatzb vt rgoi:i3-:pt) noqcss accelerated through a potential difference of 500 V. W-i ctqr:z9**tv:gbz;h ooau+spt3v 3isu1 n)hat is the velocity 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 chat d))gy.y 4 ,trstw4 8zmpfbx/rge of 20 mC. The object 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 p8t)tp 4y. rx mdzsbw/f,gy )4totential 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 electr2gv9eclksru 3t4n /t9ical potential difference between two parallel meta49 k gu2ltenrc sv/93tl plates separated by 1.0 mm. What is the electric 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 directed parallel s7omnxbqq i /yt r0822yc.qh/to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the pc y082r o72qx . qhqysm//itnbotential 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 u9g lxkp t49*rzhzx1ujj 7+lo3+sh v1of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the rh3zu1k j4g+x llztu79 o 19s xp+vj*hvoltage 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 al z4orn6viu/-o ong the direction of an electric field of magnitude 3.0 V/m. Wz-/o niru6o4 vhat 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, are c6hjd,no*z1o7v0hy l o; 0rglv onnected 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 potent 1o6gy rz07v,0o;llj nodvhh*ial 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 19vtar wvh6g. ez,0 lk42-V battery. An electron relevkt,vare40z6 .wg9l h ased 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, separated by 0.20 mql; a:g tsjfrr.1f5t9fu5ww7xs2 fq), are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative q7q:af5 x)2.w stu5;rff st9fjw1grlplate. 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 of 50 N/C directed toward the east. If9a)i :nx7p0x ne 98ff-wadsz x the vonfa) 9: pd0 wxez8s79-f axnixltage 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 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 t7xg 3k uqy; euik,+,aof 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+q;t gy, u kka3x,e7ui 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 willc hyp-8f cuo3)cpjri:dwh s-i5a;5-g acquire a kinetic energy (in ch8d hgi-fj 5c: -c3pr-ayw); o5 suipthe 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 potential at a distanc1ewhi slo(r a75v n7)pe 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 sticoddu 5ux7- 7nnk. Find the electrical potential for the centn-75ud onxdu7 er 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 ml 8lc my;kxt:5ld*qr*, 0). If the potential is taken to be zero at infinity, what is the ele:ld*5 mrt lxqlk cy8;*ctric 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) an,lwl7ywh) nd, +*d hsuiqu( -rd 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 potential energy of a 1.0-i -l )yldn,w (swqrhu*h+d, 7unC 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) anpb,h 0bkz5nd1d 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 bring a 1zh 01,kbnpb5 d.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 4rk.tp gp *)imph0i n*of a rectangle of sides a and b. What th**4m.0np)g i k pripis the potential at the center of 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 a sideo;)yu 2si b+1a+qstyy. Charges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are po2sisa tb;+y)uyyq + 1laced 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, ub2 ; (ypaq1uxmass $6.64 \times 10^{-27} \; kg$) 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 charge+3bx4kbr 1bvh s, each of 2.0 mC, at the cornbrhb +kvx3b41 ers of an equilateral triangle 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 thp dni1pz:id w07) z nv+b2, mgym/1gvse plates of a 2.0-mF capacitor when it is charged to 100z mpn/7nz )yvwvpbd1i02sg ,idg+1m: 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 plates of are*w8awr;k* ratf (q.gga $0.50 \; m^{2}$ 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 plates are separated gk-(- e ac9hk14n rcbqby 0.050 mm. If the capacitance is 17.3 pF, what is thnk- cqerakh -(9c1g b4e 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 halii(p obj+am c.k39 8i22jhvgs 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 the potential/,rc kjs, y4ex difference between the plates i,r/e kjxy,c4s s 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 conj4h znqp0a4a(j eg h,a6xi*l8 nected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constz *xa80jg4,i6ah4q lajp(e n hant = 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 plac 8b* mdjb4cwlaf)dl5:ed on a 15 mF capacitor. How much energy is stored in the capacitor?:4* ddfamlw8j5 ) bclb

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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 cx1d a,jhwd7v 2apacitor. What is the energy stored in the capacitorxa7h v,dd2j1w ?

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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 ofo) bj h5kf4+xg a capacitor when it is connected to a 1 jo)bh +g4fxk52.0-V battery. 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 charged so that it stok8 pv lksxgf.5t9 :vb6res $2.0 \times 10^{-3} \; J$ 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 si5;pf4evw02z z jk8l 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 capacitom l eu2qek+j2f02w 5v j4yi*ovr 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 plubl c 1zj;6(aeates 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 constrs gz.p kyjjw5yf.2wfq *ae0(/ucted 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 capaci aur;l; p8gj:ytor 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 charged. 20l xsb (kyn:8qnx2v o The batn b l:v 28(xnk2xqsy0otery 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 and becomes fully 5hgow: c n y6k5g-;kricharged. The battery is removed an grw5g:c5 ihkkyn; o-6d 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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