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习题练习：Physics Unit17: Electric Potential
本习题练习来源于51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 75 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://51fly.win/test75.html
 作者: physics  发布日期: 2022-08-15 14:49    总分: 75分  得分: _____________

答题人: 匿名未登录  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 followingyb x bv4xtr :yxdduhi/30j; /; is 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 isz571 .ucb slbflyzv2*v + /dgn 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 Aw wq5 pkmp53)d has a net charge of exckp5qwmw p53 d)ess 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 direction of the electric fie h cxfy e:1d3aobs*pr3:s3z1fld

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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 to the electric field.5 ,hv zau7kjk

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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 hollt:m -v78kehgam1 *oylow 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 accelera7ifnd. 4imr 4mted from rest to a speed v by a 500 V potential 7m mnirf4i 4d.difference. 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 is referred to awek gm iw6 (+qp).rl7qs

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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 fro7 7a u z2yjkbjvy;k) aafs81l9m point A to point B along an equipotential surfac 8k 1jvaly;ykau97j zf)ba7 s2e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfacosyuu rdan1674q) 7as pi,enq izn/ 13e must 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 that on the elecw v.jw2p0oc.fzg .3umvm v+:h tron as a result of moving through a potential difference of one volt is refer+fh3cg .2 uzo vm0.wwmvv:.jpred 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 unitisil 79huq8eadp cwzx/ o/.u 4;cc6s, 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 correspomab o*l y5xcq)/787w z x5ceucnds 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 ae056vca4d37:eiq0la w jjzas distance of 2.0 m from a positive point charge is 100 V. What is the asc l0a ei5 7:vewz30 dq4ja6jabsolute 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 a distance of 2.0 m from a )obdf:spqd ym66 vkk 1s3 vh.-negative point charge is -100 V. What is the absolute potential 4.0 m away from the same point cm3kdb.fpv) 6qv61h:k o-s dsy harge?

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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 cha:ux0x,kru 0 d;ydqg *hrge of +Q is located at one of the square's corners. What is the absolute potential at the sr h0d ud0 :xx;,qyu*kgquare'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 of3pn; nwvbo j5w,sz.1nne6 5ht +Q is located at one of the square's corners. What is the absolute potet5h3z.nn ;wo6,nevp 1w bjsn5ntial 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 of two charges thadx2 gk3hzp1n / s* (hh/k3 e,3ozyexllt 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 a- vl2o3bmy fzq,)t qf2s q-1go

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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 respect except thab lq3lla.)+4x ayrf9 wt one has twice the plate area of the other. If the smaller capacitor has capacitance C l9r.b3aw4l f)+lx qay, 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 capacijc( q;pq/ x-vjx*evx. slp9e7tor has a capacitance of C. If the area of the plates is doubled and the d7/e*9s ( pc.x jqe xjx-pv;vqlistance 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 fully and then is removed. The pl6ss 1 ylxc(tobqr ;r)9x9o fwea::m y-ates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remains constant.) What happens s:s fq ycmr1 9oxxe;t-y6:9wbao)r(lto 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 ca, k6h.no0v sgdpacitor is weakened, the capacitance of that caoh0g. ds6 vkn,pacitor

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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 maintainemnj;,i 2olc)n d with constant voltage by a battery asiomn2cn;jl) , 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-plsblkh +38tyu+b - cr .v5qg.neate capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens c-hy+s vg.rnl+ue8k b35t q .bto 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 diea +kx:rpv ai.8lectric material between the plates of a capacitoipar 8:x+.v kar.
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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 pap 8-bzz.x6h7go4q1b 3lls iky;p +eq mger is placed between the plates of a capacitor. What happens to the capib1s 7pzby8l3g +; lhq6g.zmeo4x- k qacitance?

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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 placr6h3kv -t4ru ued between the plates of a capacitor holding a fixed charh-34u krt6r vuge. 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 capazvg3. m05j 9q s1zsvevcitor is connected to a battery and becomes fully charged. The capacitor is then disconnected, and the separation betzve.1 90 sszvgq m5j3vween 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 c63)--:jz ynap - kdnxyd qrf/ionstant charge causes the energy stored in that caj/:6qdxk 3adf-zypn-)ir- n ypacitor 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 a77ew2os p93es8wb3 obk,pm b. byx5c9uou ,rl given capacitor causes the energy stored in that capa9om bk lb3,e.xw8b92sr pseu,oob cu57y7 pw3citor 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 energ 6yf5/xsbh0 rby to move 10 C of charge from point A to point B. What is the potential dif/6syrf0 5 bhxbference 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 mvtvug62om1 j71 c 1xjA, where the potential is -50 V, 2vm11ut1j6om7c jxvg to point 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 poten 0cf 0)qluaoa( zmnlv6-00 zpbc rp1t1tial difference of 500 V. What is the )0zlfaq01 0b( rv6cl mt1uppc0oz an-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 restsu(df csj;7co 4(obk iv3d.m 0, is accelerated through an electric potential difference of 500 V. What is t4(u ssmbod3c7j0 .cfd( io;kvhe 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 throughs)k, iqq5q-z7 tlzxccu e*.,b,gp: zf a potential difference of 1200 V. Wh i)g cpcuels 5zqx.-z:,kz 7q*bt, ,qfat speed does 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 ysy5un8 5k mca6h ix4-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 a potential cd1+1c r+d,xh; kg gkc3z +ksldifference of 500 V. What is the velocity of the elecc,+; z1ldh+kx kcrgd gk1+ c3stron 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 accelerated from 0znr)g3vq 8v krest th rvnv0 8z)qkg3rough a potential difference, 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 electrical potential difference -n*-cm 8an3emq pa/ /cl1imcebetween two parallel metal pe1c*maem n/m-pqc la/in8-3 clates 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/cvzn+89i z6m:qmec c 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential ac 6:9cm+ /z nv8imczqet 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 electri;gm*v63fg w bsz;/cydc field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point v sggc;dmz yw 6;3f*/bis 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 an electric fji t/2m:dgeru3 m1d :nmo/k, field of magnitude 3.0 V/m. What is the gjfdr/2 mneuodtimmk 1,/: :3change 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, separatzqzo( wa zbt*n3 5s6:oed 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 the electron arrives at a distance 1.50 m from the positive plate5nzbq sw(o3:ztz a*o 6, 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, sepmpe3p s+ afx(0w2i .tfarated 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 the electron arrives at a distance 0.050 m from the pof2pwx sp0 .m3ift+a( esitive 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 c-n3a7k n*t55c(a i 8wmsxu pxconnected to a 12-V battery. An electron released from ruatc-8mnik c3*xwx5 5nsp 7a(est at a location 0.10 m 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 of 50 N/C directed toward the east. If the vo 4q27f*p 2 vjmt7nvds/sqeln(ltage measured relative to ground at a given point in the field is 80 V, what i 2mstvq*72d7plfv4/n(j e qsns 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 di-zs 51ojzmywf ca+ z*6rected toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what iayzz6z o-s wf *5jm+1cs 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 qr9b qe5 fsp i)(ng.r1potential difference of 12 V, it will acquire a kine( 5r)i 9gsbep .q1nqrftic energy (in 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 potential at ate:yzadfh/ 60 .6c0wtw/t.x iuqh d-k 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 meter stick.ae-o p; :croe 7)atx7u Find the electrical potential for the center of the t -e7 pocr )e7xo;:aaumeter 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 -2vojs 9 0 t.5cdddt2fm.5e) uyl.0-nC charge is at (3.0 m, 0). If the potential is td fcu 0lodm.j5v5t2.s9)dey t aken 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 a -2.0-nC charge is at (3.0 m, 0). If th3yzx yn((*ysh-*kh*qyhrq , te potential is taken to be zero ayhy* tqzh*q yx-,rh (y*nks3(t 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 is at (3.0 m, ;k b 7a/oay i27hh,/ubs-ry5v ngd8zs0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC chargebryab/8osy/v hsga uh57nz i - k,;d27 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 o1 m0;5jn pq,)gu dwzxu 9l+rzbf 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, )mlr zu+jqbw ,;9d51n xgz p0uand 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. Ch wun2*m3c2um kvo 0qo5arges of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed cowvknoumc02 3m5q*2 u harges 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 +vlr slfyu c93( iwj0d//ihe7:n/,ikl2e, 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 tc)bf*u) tkwu -8 65kyt+6ezr3cyi rcv0k t +yco place three charges, each of 2.0 mC, at the corners of an eq 6-5rc) kvkyrzc3tct8ek *yu6f+u t +b)wicy0uilateral 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 of a 2.h o; bwpypb1 y83rzsv;.4 l87l wnnfy.0-mF capacitor when it is charged to 100 V? s4nlypbb;n z1rwv.8 8pol7f. 3hyw;y

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capaciwem g;6 r )aqiwly;y.3tor 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 arei76h1 ,a2 ogz orzwh1k yo.z0t separated by 0.050 mm. If6.1h 7iyohz1zw o2zo0tgr ,ka 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 has plates of areao5 dp b9g.p+9dtdb yw( $0.20 \; m^{2}$ 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 kn9 2p w8thig4the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates?4ihg298k npt w

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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. After the ba lhv n2ik.k6;wy,spq0 ttery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, which remained connect0 kyk 6ps2;v,qniwh.led 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 capactph6gvy u: :a*.vhh0qwdk3 3jitor. How much energy is stored in the capacitorqt v jh0huy k:pw. hv6g*ad:33?

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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 aal3fc g8;v6iz:0z m( zbi*izh 15 mF capacitor. What is the energy stored in the capacito i fh i(bvz*0ailm3gz; zcz86:r?

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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 x 0xwpregdw/.yfi+; u w8tz szo75z-6to a 12.0-V battery. How much work was done in charging this cw-fo.ew p/ z76z sd+ 0z 8gy;xrt5uwixapacitor?

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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 sto .ng0*c cbo0w83qnrb ores $2.0 \times 10^{-3} \; J$ 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 plat 5bzh8 (vr+2r n e6hiv67*wda,drdhb ges 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 c+ytl dv.t3ww/ c4,ryb/psy n zhq 6(1xonsists 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 coa )g:i8llex7c2 6pqad 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 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 x;do1z .j nr/ of-de) axf2ek0plate 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 capacitor vcdt6h / xtjon ,/2ob eb71r)ej8jiu4is 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*aly2o)kqy gu np4ve*16cbi)w i k9* f-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely )ak vp4i)i2k q*wfy1ybneg69* o* uclfills 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-Vu7 (deg;n1rrxr70uju cs9a a . 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 after the slab is inra ju gerdusc7n7.1x09(a;urserted?

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