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习题练习：Physics Unit17: Electric Potential
本习题练习试卷来源于无忧得胜-网上国际课程 (https://5edu.win)， 为试卷打印版，您也可以在网站平台(https://autoconfig.5edu.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.5edu.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: admin  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 vector?ajz)8dt fqf9y d6.l+ i

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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 au -w 9.xb7hb5gbdao5m

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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 surrg6 occ)i t1ee+oundings. Object A has a net charge of excess electrons. Object B is grounded.eeg6c+cto 1 )i 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 electr(x .) wiuud,tgo ,w+sx0y9hkric 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 to tlr,c wg2 l)xy7u. zbtk5y70vnhe 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 conductinet 42 f,kjsy/th; .b6l6wuzpa g 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 acce5c 3u1w 7u+mm fpiml;nlerated from rest to a speed v by a 500 V potential difference. If the potential difference is changeuwmuimn 5 mp7+f3c l;1d 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 rertay3ao/**)er :zm*liwzf u c 9e/d7 gferred 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* zefccb3 .;ce8fz pc) t;hl6x along an equipotential surfacbfz *8c3)he f. ;pl6tezccxc;e.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surb,7,pdv65cvznbc w362 mx q cwface 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 thtuk nk.2 bef9,e electron as a result of moving through a potential difference of one volt is r b 9.fk2t,ekuneferred 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 unflef,j2 .v x6npiqs y3xb1w((xvdn (5 it 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 correspo+c ct q-itw6zr,s wl62nds 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 pospqt 6gz ut539zitive point charge is 100 V. What is the absolute potential 4.0 m away fr qgztz539pt u6om 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 negativj;ejg/2 w8rjv e point charge is -100 V. What is the absolute potentiag; w/je2jrjv8 l 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 whe9oc utcvy,l0)n a charge of +Q is locuy o tc)v9l,0cated 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 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 *gz yt43 bo/kreqb;p p9j +wm2of +Q is located at one of the square's corners. What is the absolute r zymj3tb* p2p4/9bwkqg;e+ opotential 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 vb2+2y 6tph 3sb(hdrq8 n6 dttcharges 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 volte1yte.td5ac n ds5t lct1(t 0. 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 respect excx7efy+0 ;*q klagylf,ept that one has twice the plate area of the other. If the smaller capacitor has capacitance Ceqf0+ ak yyg *xl7fl;,, 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 yw855zj9f2kanen/ mta capacitance of C. If the area of the plates is doubled and the distance between the plates ije2 n ywmza/85t5fnk9s 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-plu hpaglg.t*s-cg-t y-9v2xe5ate capacitor fully 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 being separategg ax5g2s- v-.9u-htcp y* lted?

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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 b1bf)d+lnm j a)oc0go979niotetween the plates of a given capacitor is weakened, the capacita d9can 9gf0+bjloo)oi71t) nmnce 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 capacitu :5-l9fm rrkbs2c 9ywor are maintained with constant voltage by a battery as they are pulled apart. During this process, the amount of charge on the plate u-w9cmbr f:rlys k295s 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-plaj0o.(nvr2x fgcjj r7(te capacitor are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric field during this process?v2(0crxj .fr jgon( j7

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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 materifz 5n:+ko6;yuf( csufal between the plates of a capacitoru:5ufc(sy onzkf6f; + .
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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 plakmij+01-f5 bcnta9 0z cdv. lkced between the plates of a capacitor. What happens to the capc 0kcalfm1 vji5z b09-n.d k+tacitance?

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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 platesy(mk*q7:* 0xxd *a. etca pmhe of a capacitor holding a fixed charge. What happens to the el: d.a* a*xxk0mtec*(m7qephy ectric 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 battery and becomes fully)rj3a7 (dj5tomxv l 8d charged. The capacitor is then disconnected, and the separation between the plates 5jlmvd 8or j (tad3x)7is 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 charge causes the4vj5/ oa3hjt2r1 qdd3iw(h 6orxwto - energy stored in that capoq4 r3d-o(i/o1hwxv56at3h2 w jjtrdacitor 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 capacitor causes the energy stored in that c7a/2 yvt 1am+wn2*wcod(obj sa2d7s/vaw+1 bmtacy wj(o*2onpacitor 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 mo1i,4r tz5j ej+.hmikb1 ;dftive 10 C of charge from point A to point B. What is the p.tm1e+ir1 it ,hi jz4j;bfdk5otential 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 movingl.,:pqp)9t((jww hlvch qm ,l an electron from point A, where the potential is -50 V, to point B, where the potential is +50 V,, qqc h(w) 9,h.pvlj lp(ml:tw 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 electr, klwnjc+- :wuq b0:l3yfth/1cabj f:ic potential difference of 500 V. What is thec3: /uy: +lnw:ab1hjf-0kw,c bqtj fl 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 t1jg-z7c8 gypvhrough an electric potential difference of 500 V. What is the speedz g7gvj1-p8cy 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 tg8hpwdp +9) fmhrough a potential difference of 1200 V. What speed does it+m8)hfgd9p wp 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 92(xy;kcl(*vre+fjloc(u p emoving $8.5 \times 10^{18} \; electrons$?

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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 accelerapjo6i4v2wwq 8 ted through a potential difference of 500 V. What is the velocity qjp2w46vow 8i 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 acceler8)o r s)nn/dik dkt ,4ejzda6,ated from rest through a potential difference, andasjed i4t)nk, 8 k/zrn,od6)d 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 potentiu r y0ly(dz 7m bjvbs9vdw9(:--2xngo al difference between two parallel metal plates separated by 1.0 mm. Wng0zx9bjd(md vy9o(7r-uy 2:bv-slwhat 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 dcd5u;xz9t vn 7irected parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at x =v9u czxd7;nt 5 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 ele,g1hc 6upvi-xctric field of 50 N/C directed toward the east. If the voltage measured relative to ground uvg1pic-6xh, 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 an e7r3txex f- ;ftlectric field of magnitude 3.0 V/m. Whate-;tt xx3f fr7 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 conne6-0shdti tdy -hxns/ 8cted 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 6t /ihyst ds- h8-dxn0distance 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 batu*vls3n b-a; ltery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrivl au-nl;3b *sves 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, separatej)-+h0xqw s eqqm3c)od by 0.20 m, are connected to a 12-V battery. An electron released from rest qme w-3)qh osc)+0qjxat 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 electricl, -hycw73ga ,ohjk2q field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given7 j3l,h,w qyhc2-kaog 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 of 50 N/C directed toward the east. If veru)mw; c/j kxzf ) dr4r nf:v3cv*43the voltage measurevr 4rux4;:cvf3e)c k*jfw ) znvdrm/3d 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 potential difference of 12 V, it wi:8p dg 9enmay(ll acquire a kinetic energy (in the abs nyg 8da9:mp(eence 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 ei,ed5e9ovr mf: 60ejat 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 meter kum iy5k+1q 9dstick. Find the electrical potential for the center of the meter stidqy mi9k+u5 1kck.

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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 m, 0). Iv*602mrq imo+ v:xiw of the potential is taken to be zero at infinity, what is the electric potential at poi*mwov :oi0rm 2 i6vq+xnt (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*x3/ejg*m xmyd a -2.0-nC charge is at (3.0 m, 0). If the potential is taken tomgxmeyx/ 3* *j be zero 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, 0) and a -2.0-nC charge is at (3 hs,)ll hs. zmu)j2(2nddw( ta:q8pk z.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC c )uz.q2 2(pl:danslz(smw hkt)jd8, hharge 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 charblexp.:(1 .op iepf f;ge +q are placed at the corners of a rectangle of sides a and b. What is the potential at tl;xf(1.pe fbpi:.eophe 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. Chargeqlxj1wq/g 7z2s of +4.0 mC are placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 m/7lxw2z q qjg1C. 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 (cha,b 8o :/vepytorge +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, at thfc(gs, 1 : s+l* bn/ qnb8 d2kjllfokowom*z03e corners of an equisb fsn go 2olqlzk1 j*/n3cm0fl*:8 ,owd(k +blateral 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 2.0-mF capacitor when it is charged t5vgbc l:,h n;e71gfuwo3c s0ho 100 V?f5n1h gu cocsl :7;hegvbw ,30

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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 areapy e3n (pdh+cf-kh1 /z:fm:yk $0.50 \; m^{2}$ 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 pl::.9 aemzz :ypi 5hkcsates are separated by 0.050 mm. If the capacitance is 17.3 pF, wh a:m.zz 5pck:i:y hse9at 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 areaerh9-e soa0+p.y4 t 4a-,lzot sh(hqy $0.20 \; m^{2}$ 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 pomqs 5jsul )yn/kc3 (p0tential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates? u(nssp /m3y05lc)qkj

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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.sy8)grr kb6,5v1 t 5z*gr femh,:hahl 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 batter8 kg 5b)v1rr aze,*yt,hrls6m:5gh h fy, 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 yr7nwxq9lyx*) v7ln-a 15 mF capacitor. How much energy is stored in the capacitor?9q-l7 nnx7*yxwvl y)r

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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 stored iwisk8g*;:rnu ba hv f24co8tv;3xad )n the capacitoraofk;:2cgv xwuv* a;rnh843 dsi8 b)t?

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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 ongcb)j4 xv z.tn9mvquifb,6 /)to the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in charni,v /4gctbv)6f) zb9qx ujm.ging 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 ishn +(rp xu7oekm);d 0b charged 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 of6(w.s:9m fb s(2v ueh w0zjntk 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 consists of plates of area tot-549acb4 w0c ckx b$1.5 \times 10^{-4} \; m^{2}$ 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 capacit7 cm2zzcw :za ;qe:2mxr r4s/ror 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 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 constgy*ish8p e, gkr84 q0eructed 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 capacitor is constructedud,k 5eu 6z4l ha1kgick*) c5i 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 chan;5qq w;5o tg1zz ia)ej -*belrged. The battery is removed and a slab of dielectric that completely fills the space between the plates is inserted. If b qeteog*i)lz5;5 jnazw;1-q 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 2cahvc 5,jzm /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 dielectrj/c vcm2 5,azhic 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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