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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://mail.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://mail.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 igsa0l3( z pp0sge 5ih3s 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 aadi)c :1vwb. fuw 1(lz

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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 insu jwcg 0kg).z*9 f9 xtzb3 hgr(qe0/laglated from their surroundings. Object A has g) lbjq0/(cef*9zgx kg zwa03gr h9.ta net charge 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 d9+:at1zjim :so53z vb; bdql5hr0zj virection 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 nr +87 +r aunty66sbgtoc(7da 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 hotu y lk2.8dqr2llow 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 r-v)l 7dmw.nq test to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will thewd .q7tnv-) lm 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 p3,n mcwzzfo *2otential 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 al iyu)7i 7/(d nqndaa3gong an equipotential surfaceya n/d77inuda )gq(3i.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface musbrz 9j:yr b44yl2 mh-hlet5h1t 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 cv1j:o)va dr* a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referv 1:dac)v r*jored 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 ofa:um30gqb 8km

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One electron-volt correst/1w ydz8 -8.x emf6l* b7xtrtvemqr /ponds 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 diln,stxnnlsh k 39.q /4stance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away from the same point chq4n n,s/l 9 3t.sxnklharge?

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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 fu qob8,4,s 2jf rm4vlgrom a negative point charge is -100 V. What is the absolute potential rm8q4bv4, o2usj, glf4.0 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 Vh.l molp/5 sn+ 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 each of the other corners is also filled with a chargehlp5o+ m/ sln. 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 centerzdu * 2gcv3j8n 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 g 8dju z32cnv*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 y5 -*gz7v3s+rwq +m mjhtsty* 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 ahre1 i1f;cm4 n

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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;(gc y:+iynzs respect except that one has twice the plate ;:(yyisz+ncg area of the other. If the smaller 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. If the area of t 9kk(trq75ytohe plates is doubled and the distance btkr qt9ko y(75etween 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 f+ coj,a:e g9unully and then is removed. The plates are immediately pulled apart. (With the battery disconnected, the amount of chare +,nja9cg:uoge 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 weakene2orz7fgw ezk9k,p* z9/zma l ry)t20pd, the capacitance of that clgpkymz2 )7*z z peo9af0kr/29z,rtw apacitor

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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 paralp-z9uo3 (3rl fybz n8klel-plate capacitor are maintained with constant voltage by a battery as they are pulled apart. During this procy9n- klfzob8rp (3 3zuess, 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 constant vo43dbx3 6idx yoltage by a batteryx4d336x bdyio as 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 material between tho zf,b9xb cr 0oxt78zkl g:/+ye plates of a capaclo+bbofy7c ,z kx:r/tx8 0g9 zitor.
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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 plates of o6aby ;6en:n32 oorir a capacitor. Wh:n6ao iby;ro3rn6 o e2at happens 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 psv/m+:w 8s v6 +utblhtlaced between the plates of a capacitor holding a fixed charge. What happens to th: sw+lb h6tmsutv+/v8 e 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 4s;/q d0y-1hlhfxrw n connected 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. Th/w f-q1;lx4r n0dyhshe 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 charge cau t q3jjs3ga:mm+5l+ow ses the energy stored in that caam+o:3q t53j mwslgj+ pacitor 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 hau9st byd,0m6) dsl/a given capacitor causes the energy stored in that capd6 h/y0d ta s9slmb),uacitor 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 to point i .yto/i48ww t 7fis2rB. What is the pow4.i/rs8y 2t tw7ifiotential 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 elecks+o;0rzge, :rdwq/b tron from point A, where the potential is -50 V, to point B, where the potential is +0 ezr,:+sd;orgw bqk /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 throughr1- 7ak o ahjb pbw6b1e(x+ca4 an electric potential difference h-ajr6+4cpbb1b7( ea1wo xka 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 accel ie2a6qe 55g k:fybr4lerated through an electric potential difference of 500 V. What is the speed of the pa6fq5i:l yrebke25g 4 roton?

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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 de y+)zx1myr(a-fu0 mjs), w d4uq7ea difference of 1200 V. What speed dud+(41zara7)fyd 0mmue)-,jyxw s eqoes 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 moving 92u2mhl yti0of7n7sv6d4 v uk $8.5 \times 10^{18} \; electrons$?

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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 dijir e0 , ipr4r.9i4rfpfference of 500 V. What is the vjrr,i 9rei 0rip4fp.4 elocity 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 mgm.+( da csj j+yfp-+y8 h3utmC. 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 potentid++uyc j(apjmhfm8t3+s y g.-al 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 difference between twqkbeydnx+x1 1/dq -s3akg5-po parallel metal plates separated by 1.0 mm. What is the electric field between the plae x1gqd3 qk+s 5xy/ap1nb--kdtes?

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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 dire:f/c4e0 rj*wk pd8 auocted parallel to the +x axis. If the potent*4 80cje udoapfr/ k:wial 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. Iff 81jhqk:8hl e the voltage measurhq8fe hj:8lk1 ed relative to ground at a given point 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 bgt4 *bu )nia6an electric field of magnitude 3.0 V/m. What is the change in kinetic energy of the pbg6)*ib nt4auroton?

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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 connected to a6t1u p, wn9lz wqlxj9ynb c4(5 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, wha5 cb qnw6wllpjzt(1 xuy49n9, t 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,8v38yr px z*vcdk2( ;0vo2yr-zetsw r separated by 0.20 m, are connected to a 12-V battery. An electron released from rest aty-xecyw0k; 8tz 3s( z82rpv2vo*rrdv 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 bi /v +c891 ehot0exnwmy 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 the electron arrives at a distance 0.050 m from the0w i9evmn1c8ht /oe +x 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 *p f s v(w)uefp7yjb 8bw+om:0of 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 1f*(7p:fbwew pm0y b+o)uv8js .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 sh3 ,;xbzi4riuk06pgN/C directed toward the east. If the voltage measured relative to ground at a given point in the field isu;, bgi3 xi4pk0rh6zs 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 differencee+,w:(t ,mpumlw-h,ij zq.i z of 12 V, it will acquire a kinetic energy (in j-w( +mzmp.z eq ,: ut,wih,ilthe 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 distan eji+;-dceee5h2 ett8dpr q1,ce 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 me59l)r37x/o mjhq xs qhter stick. Find the electrical potential for th7oqhj /x 9hrsxq3 5l)me 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 (093 mn.2wj(t8urquvt j, 0) and a -2.0-nC charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, what ist(w2n3u jrq 98muj tv. 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 charge is at (3.0 m, +cgs7i x5/3qh7xxvatpyvx l1 6 9imr ,0). If the potential is taken to be zerxqc tx+v3 6pvl/xi sg1 ym9hr5 x7ia7,o at 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, )ekx (0t, 7ddj/oztsfffw0: b0) 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 work required to bring a 1.0- bdzeffswt0,fox/kt 70d)( : jnC 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 char+ 5lu ;dgd6y4 -9; gmfu*-pirvdsht zpge +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, a = 3.0 cm, d-9tg4ds +;y v dl;p6-pgui fh5zr*muand 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 diagoyi uj;t/r 5 7c9s-0j2evrso idnally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute 7tjv i02sj is/5rc9-yrod ;uepotential 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 (chaj*x0g4a8buf c2w av:ei7ddo7rge +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 *2sbx (9pfy6x qoe.l-kx2 fm izuo28zcharges, each of 2.0 mC, at the corners of an equilateral triangle of sidex ylf ezzi6.9omqo2xx* 2kfbps82 u-( 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 it is c zs )y2o:usyg9harged to 100 V?2) ysgzy:9uos

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capacithca) :s k4(e 8cjv 5xar/b (8awoupbq(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 p7sfy51hqcfcyp)gm p.)n;p i , lates are separated by 0.050 mm. If the capacitance is 17.3f 1y)nhpcqp)py,;5 if.s 7cmg 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 has plates of ar(6mz( pk zuoh)xj5bqlp f+i))ea $0.20 \; m^{2}$ 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 ts2ih 0mod-2r mobn3 ejxs3v4( he potential difference between the plates is 2000 V, with the top plate at the higher potemx(0odb-4ihsjem22r3 3 ovs nntial, 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 batte:37ya u*2 xk (zrkcchwry. 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 bat hw7k(yk:x zcrca3u* 2tery, 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 o3q vtzpjqy( )uf)fx4, n a 15 mF capacitor. How much energy is stored in the cay)xuq3 )vf,p tjqz (f4pacitor?

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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 capacito 2qzm +2yh)frar. What is the energy stored in the capach+rmafyz 2q) 2itor?

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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 t5k (p9, i lb(*0jnk:abp dbbxflows onto the plates of a capacitor when it is connected to a 12.0-V batteryk9lkpdt x50ib:na( (*,bbbjp . 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 r8t 7d2c v)tx xs4ss+uthat 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 capcy)u g3hgu (8yv7/kqttvz9-d acitor 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 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 czb,6-umq j1u j5 qnrhn/d:o9yonsists 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 ;2u6e, tbhy )uqtge9yh4dmi1consists 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 is constructed witzl,skbhw2.7vq5r r.dzv6ow7 8xe1hdmw +e +h h 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. ebh8f e o;cydhw 66w7b p*zi1mry60rtor 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 t 1qq 9blz(kaqh7 1b4(wnkceb,o 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 aft kh(bclqq zn1 wqa9k14be7( ,ber 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 conn;qoll7g2z* 5f0mfdg, jlkh0 sected 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 voltage across the capacitor's plates af2f j5;0 g,mfozlk *0 lgqldhs7ter the slab is inserted?

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