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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 c+com k: i2i5d +d/ksdvector?

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulom; tywr f;.jjw8b is 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 thecr blyd(3i ob3) o/6wsir surroundings. Object A has a net charge of excess electrons. Object B )b co/dbws r36yl(3iois 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 direction of the elect:;zeh s -px1o(q fxnsjvb2y*4 ric 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 diro hv*d8 nyain kv.6hm7 6 +xsbc3(e.rrection 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 placuf u2iiq62mn e7xuk,(ed 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 accelerated from rest to a speed v by a 500 V potentialtp8u,x-o 7*0iwcso sm difference. If the potential difference is changed to 2000 V, what wsm *xot - ow7s,c0p8iuill 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 potq1s cqn8s aw*4ential 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 an equipotential surf*b i.m(bu /ea,mp/gbhac/.b/*g ihupba,mb(me 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 bec9s./rg+,wo dhtq u8x

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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 chvk.h0r4m9bfve q k-d*(qmn 3u / ;ztedarge equal to that on the electron as a result of moving through a potential difference of one volt3m b. mzndvu(qk t /feh;0rdqe9 k4*-v 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 i3ot8 +i20t)te smpfd 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 odlcdh+.74 *vqx+ukv 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 distq hg5j+f*r q;kance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the same fr+h;5k qqgj*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 froon 9.a9ekh4(b hjq.qsm a negative point charge is -100 V. What is the absolute potential 4.0 m awayj.4nko q( hseq.hba99 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 potentiau dk;klckn*8q /c/ 5*/luvopyl at 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 t/kk dqclpu*//c;v uo lk5n*y8he absolute potential at 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 charge of +Q i2/8/gv v/mtx9qks z xbs located at one of the square's corners. What is the absolute potential at the squarexxg t/z8k bv9 /q2sv/m'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;ni3uy.u)ba 5tmds vw4 btu1) 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 volt is b:zddg jtj-a 2go): )0j. kisma

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capacitoz-55 vzok1v/d6i kspurs are identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, t -d5i1u5 /vk6ovkzzsp he 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. If the area of the plat szh+zo:z- 0rl28f6 a(ebr.o. gqqfh les is doubled and the distance betwqh0.lzr:ehl8.+ ooq zg2basfrf( z-6een 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 parallelda87yc/ yqzmf*-. 9disn jso6-plate capacitor fully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of czj7n6da8-c9/yymq o.sd fs* iharge 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 ggov-o 6qff -s/iven capacitor is weakened, the capag -ofoq/6 vs-fcitance 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 voltag0si+k9ea b 0(orjrlr p* esq)6e by a battery e)alq kr0r s(isroj+p* b960eas they are pulled 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 maintained witlmtao5w zq s8:6)oy; -gdpqjy8 7/q cxh constant voltage by a battery as they are pulled apart. What happens to the strength of the elec)yq6:axydz- 5gq78woo8c/t j; qm ps ltric 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 d0 ,nme+5jw-kip y gjt*ielectric material between the plates of a capacitor.e-kgmnjw 0 j*+yt5ip,
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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 beb7zvy k,3 nuj2gkto8;tween the plates of a capacitor. What happens to the capacitt j73oykv;zkg bn28u,ance?

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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 plafnqj6yf+ez6ot (a/ *ttes of a capacitor holding a fixed charge. What hty n /+6j*a(zeoqf6t fappens 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 isq3yjllpu4 , +euvf:c;pykj9u2l )zx9 connected to a battery and becomes fully charged. The ca vuyj;kq l,42xelc)9u3z pfy9u: lj+ppacitor is then disconnected, and 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 capacitance of a capacitor holding a constant qzfz,2 j: n*dzcharge causes the energy stored in that capacitzn:j zf,zqd* 2or 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+ 1czc km*qp*bitor causes the energy stored in that capacitor tb c* m+q1kpz*co

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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. What g2u 6o4ym7v9h , nw qfxp(x(pnis the potential difference between points A ang (pv9,7xp x2fw 4 (yqnmuhn6od 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 potential i54,uf9i 35npcfps*l e3zz puas -50 V, to po*n fzcsi5z93a ep l,3fu 4pu5pint 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 pot,bnumd- tug 4/ential difference of 500 V. What is the kinetidug/m n u4b,t-c 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 diwk )u)hj prs3 p*8(donfference of 500 V. Wh(uwp oh srkj)*3n8) pdat 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 ofr3.-hz(9qova)ha kup0o * mut 1200 V. What speed does qp)o9-a.muzth (k av *uoh 03rit 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 djmrato5 -)s 9zo 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 acceleratr;gi zxmjwg *fwg4nfdfvtc )):8f6 /6ed through a potential difference of 500 V. What is the veloci ;twj4wg*m xf)f6cv:grd/ n6fi)gz8f ty 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. The object is acceleratd2g c,;v c9udied from rest through a potential difference, and afterward the ball is moving at 2.0 m/s. What is the magnitude of,cdd9 ;v c2iug 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 tdc f4 m66do+rnhe electrical potential difference between two parallel metal plates separated by 1.0 mm. What ofm4+rdn c6 6dis 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/ar7 *l/hjm( 46zodl vqm, is directed parallel to the +x axis.qol*4hj 6r 7zav(/mdl 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 of 50 N/C directed toward the east. If fvr,l*p)gn9 h .qyj9l the voltage measured relative to ground at a given point is 80 V, what is the voltage at a prglqly*j9 n9.vhp f,)oint 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 elec,ktj4n mbi)ic0+ g.yt tric field of magnitude 3.0 V/m. What is the chanyck) 4,0bnt.m j ti+igge 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, 6sev;m (zdbhodnu ejm :+:*0o are connected to a 12-V battery. An electron released from rest at a location 0.10 m foh60:b odmjzes+n*u;d (vem: rom 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.n:k; -ictikwl4 swb6wh76 i2wll .bc4 An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at l c-wl;w6. 7bcn2k w6tiw4:hi lsbi4k 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 batter(w2/ wrzab *gvs3ro/y0rxyu ly,w 8+xy. An electron released from rest at a location 0.10 m from the negative ao*r8slgy+w wv ryr2z/u wx,by 3/0(x 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 of 50 N/C directed towarni2 1fpb:ql a+d 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 :+n afp12libqof 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/f q ukdic0 .mnk)71i4vC directed toward the east. If the voltage measured renfi k4 . d1vum70)qikclative 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 differeny3t)s 8 gmgaju y zn3*vga146cce of 12 V, it will acquire a kinetic energy (in the absence of frictiat3nj68g*1z a yyugcg34v) smon) 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 dvy4ctg7 0l z/fa8yul2istance 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 px:u *r(mi/ cymeter stick. Find the electrical potential for ty:cx/(prmi u*he 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 lsibe3 )4 ;s 3jnqd1yxis at (3.0 m, 0). If the potential i4 1b)lxss njqd ;3e3iys taken to be 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 swxg2* 9tp.opm6tr8yjb 97o d 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 1y sx8g69pr7b9*d wop2tjt mo. .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 in 4k(4 ixofqjy6a)(jms 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 inf f(y6qo4a j kjix)(mn4inity 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 equale r eu-ep)-xrz* ./f2cf vz*bn charge +q are placed at the corners of a rectangle of sides a and b. What is the penf fexu)cr-/ *vb.*p-2z rzeotential 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 side. Charges of +4.0 mC are placed in two 0k2 4*jrw knruf(b )audiagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in a*u4)(0ru jknbf2kwrthe 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 (chbf i:fu w9y ecc-sjd;-;/d, faarge +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 necessary to place three charges, each of 2.0 mC, a,jfv4kig3:z ct the cornfk43vc : ,gizjers 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 the plates jqtn/ yne 21y 1l,xxc dk1t35tof a 2.0-mF capacitor when it is charged to 100 V?lj11,t3q/5ny t1 2 ydtxke xnc

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacitno-permthpgx.f( g* h pq5e3x7t12k ;or 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 plates are separatedwmkhi nwd :do:6j*b9 * by 0.050 mm. If the capacitance is 17.3 pF, what is the platedmj: 96ki*:nh* dwbow 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 p/vctfkk huw*d4sylv tv j13b9;90 fn,lates 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 7ldpfs i(gt -:cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what i:(l 7dftpgs-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)vpp 8h:g. 4pf 4lkeuz. After the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the batteel vpg8:pzkfp)4 .4h ury, 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 capasm l ee;tj 44kj,qx3j,citor. How much energy is stored in the 4j4x,kqj;l3 mse,ejtcapacitor?

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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 storelu :frgsl 1zb8km-0 *vd in the capac l1k-g bmfurzvl0*:8sitor?

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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 connected t0fe rpjpt3 +w.o a 12.0-V battery. Howj.wr tf 03ppe+ 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 storeshh +b4b,bbf 5n(h-u ay $2.0 \times 10^{-3} \; J$ 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 pzfi/ -nez*s-4lcrda,eb0o(flates 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 con 4neyo 1bv lzk,+ty:q1sists 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 hq(uci ;xe:nqi v,x53plates 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 capacitou q36oebrd6 0br is 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 capacuf to130r 9bjaitor 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 ans .f;(w :2(ymlaqthqld becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inshlaw y (.mq: f;qs2(lterted. 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 chaq7k,*ixl+szgj mpc y 9n 0wr64rged. The battery is removed and a slab m *irq +,z9cjgknp7 0wx4lys6 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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