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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 no.;6tyssy y8 p; loe z1cd6v1get 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 coulom-h-mgb ;cj)3 si) ba /p+vkqcjb 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 their surround2n7v./.ck r qu,kowl pings. Object A has a net c2w.7,rpn/l v qkcuko.harge 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 8+ hvl 0gy6hg3.mkdlvdirection 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 tb:y7- c)4qa-jgohi) p r; dndqo 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 placywuya9) fk 5s 76 /-5stry)ku7ccknvked 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 revbq)25+ g fatnst to a speed v by a 500 V potential difference. If the potential diff2+)bvg5 taqn ference 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 refe 4t/1/vmui7 wh3pad-ijqzn o /b:ki3crred 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 gnv7h) z*g.pv A to point B along an equipotential surfacpzn) g* .7vghve.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surfx 42:oh eq,. (vu,ay.xe ohjzpace 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 z- qr s8;ge+knu2 hcr7equal to that on the electron as a result of moving through a pqhn2 -uz gck r78+;serotential 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 a unit 4llaynr.v,e 2 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 corrn fv2d-r dd(d5esponds 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 dista ehp3,9woo95 nuutqn0 nce of 2.0 m from a positive point charge is 100 V. What is the absolute potenti upq nu no0e,99t53ohwal 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 mghrpg+dg-) vhtqfywn/m: . ; meh9 /r/ from a negative point charge is -100 V. What is the absolute potential 4.0 m away -)phydvwghf :mm/g9ng /e h+;q/ rr.tfrom 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( s mqc1bxx+wvdk uy;52;)agi 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 when each of the otyx+kw ;us)2(vqx5bad1; g ci mher 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 char)+ciqg6 sqd,+g a7ihq ge of +Q is located at one of the square's corners. What iq gqi76hdc)i,+asgq+ s the absolute 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 of two charges that ar hud*qievgl3b(q1- w0 e

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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 isb; w 9d8vvwmww 46g4x+qtcv w, 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 repeafvf-ck, 6jwm5ijen b g1e2+6)2 ruspect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, the larger one hacjb6je,fw12) 2mf+nik -eugver p6a5 s 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 plateseyu d omkg5(z68s9)nx+ec-d a is doubled and the distance between the plates is k(u+ydza 6)mo -8e5c d nexg9shalved, 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 capio6 zr34y9(3pv-nrzh opq;r,c qcl3jacitor fully and then is removed. The plates are immediately pulled apart. (With the bat6oloq,4j z9 prr;qpr (-nc 33hz3ycvitery 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 the plates of a g)cv/nxx 70 ffz bzxpy zkp:17)iven capacitor is weakened, the capacitan)kcx7 y:z)zv1zxfn 0/b xpf p7ce 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 volj .w6lr*vg 4rcbl ,t,ctage by a battery as they are pulled apart. During this process, the amount of cha6jvrglc .t,cb *4rl,wrge 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 parall.bu8be za k4zqag0--gi2wy -sxs c24lel-plate capacitor are maintained with constant voltage by a battery as they ubxqszlc42 b-gsa 4-a02wgy8k-ez. i 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 betwefu5 qk ay,0 auxdb3.-jen the plates of a capacitor.-3 b5y.aj 0ux fdkaq,u
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric material 9j 9;m19kladb)ktz/ ctb k;hesuch as paper is placed between the plates of a capacitor. What happens toa;k9t;9)1jbk9 tk h b/czmled 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 placed between the plates of a capacitor 9iji+4 2 . rbmxqeswv/holding a fixed chaixw r+qvib. 4s /e29mjrge. 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+e3 c )5hgxkasonnected 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 stored in this capacish x +3akge)5ctor 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 cf37 7zsc ss79b*ve fhpapacitor holding a constant charge causes the energy stored in thats7s s79zfb*3 feh7vpc capacitor 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 th ps5wggr7i0d6 at capa5gs7p g6w0idr citor 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 B. What izyiofnd8w(wip-f. (4xegq 59s the potential difference bet.gwqey ifi45p (9(n-w8 zdxfoween 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 A, where the pxrtc4b6k44 iwotential is -50 V, to point B, where the potential iiw4kt r446cbx s +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 electri r2hk31i;,:hqrwd jxjc potential difference of 500 V. What is drwri j;x2, h: h3j1kqthe 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 at5d7j)+)tvn qlejv zb: rest, is accelerated through an electric potential difference of 500 V. What is the speed of the protojz 7v5jbqel)n)d:t+v n?

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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 fall.4ocukic a:; x +j,je;od5juhs through a potential difference of 1200 V. What ; oj,c+u:i x5j.e k dcj4uh;oaspeed 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 inbb n9gjixb0e,8x b6s g1xd)v5 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 accelerahs/v syooql qvtb)i/k-*9f ::ted through a potential difference of 500 V. What is the velocity of th:biovq :ol /h)-tys/ v *9sfkqe 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 20sf2 + mesndi,; mC. The object is accelerated from rest through a potential difference, and afterward th 2dfis ;se+,mne 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 maintarw* l 5*6nunnrins the electrical potential difference between two parallel metal plates separa**n6rl 5rn unwted 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, +ri ni +u*p *lgy6ny,q+jx uo7is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the potential at x = 2.0 mi*il6n ru++ o+pyu* jq,xny 7g?

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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 50ido9n1g2ef 74hifsg3 N/C directed toward the east. If the voltage measured relative to ground at a given pointgfiohs24 9 feg71dn3i 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 ao.3b pkvm d3*-0 wmnron electric field of magnitude 3.0 V/3-w 3*vmoo .d pmrb0nkm. What 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 connerd2htu2 j3nhuv*46m ;x m7keocted 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 k4d2h mu2v73oe t; jrx hnmu*6potential 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, - )u 41aw gnd)e(heactnyxy8/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 positive e)twy4(nxh )1ycgad -8n/ ueaplate, 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,pq( w3mv f5p)a 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 positive plat3mpq vp(fw5)ae, 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 tokx1qr (bbai *g;o,, tdward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage at ak(;btrdxob q, gi*1,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 Nlu o40-8qlns ghfde gc (ko56v/n23k m/C directed toward the east. If the voltage measured relativel n5 d2nsu3kcqelg680 -hfk 4o (go/mv 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 o,lhdv2jy.pq* 0 n:;2qndjd p 8im* sjyf 12 V, it will acquire a kinetic energy (in the absence :li jqjy v8s0.h;d 2qnj,2mypd*n*dpof 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 +kh/ oug175;vllxn;f ghsc.ydistance 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. Find the electricad 0juy -5obwf(l potential for the center ob (d0oyu-j5w ff 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 o(vgq) s7/ioy (3.0 m, 0). If the potential is taken to be zero at inf(q oos igv/7)yinity, 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) uc6h;c 0 dr9(lekwt(r 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 electric potential energy of a 1.0-c6r(e u w;d0(t chlkr9nC 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, 0). If the jrt+e,y k-s n1nsnb4i2jmnb(.k /9kq potential is taken to be zero at infinity, what is t-ns ysnnrki nk9, meqb2 j4kj1bt+./(he work required to bring a 1.0-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 cornersmldlq-3x l oe*.j+jc8 of a rectangle of sides a and b. What is the potential at the center of d3lx8o*mc -j.q+ le jlthe 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 diagonal(ys6/qttfqllgf:w 8 y2-iw11 u2 vwv qly opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in t 6 t-1y2vqwvltu2: q/g1f( wfwqly s8ihe 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,.x ey:*r3tcnu 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 2.099w:qif- q;f vk)b9r ky5 gspy mC, at the corners of an equilateral triangle of side 2.0 cm?wr9f:yqk5v9 qp kb -9gi y);sf

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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 i,6 i)k-uwy6c zzhh:w bd5lal*t is charged to 100 V*):cw5ihd z, - albzwyk6hu6 l?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A parallel-plate capy):x yc1xbf5 kacitor 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 w19c8za : h1boss(za w:y zx,usith air, and the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate a,: z wx(zaus ay1ohb :cs18z9srea?

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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 area 6 dhij3o .o,im$0.20 \; m^{2}$ 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 potenti;kb1o lqh q3f,al difference between the plath3kl1qb ; q,ofes is 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 connected across a 100* o.zaa; -i4r xop.pzy-V battery. 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 battery, which remained connected during the proc;. zzoxi4y r.*poa pa-ess?

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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 place 1 (d sopaco:4s cawo8;ymo28id on a 15 mF capacitor. How much energy is stored in the capacit;1p2csd8: (aooco4s ia8omyw or?

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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 e7b nud-gn 0;uez1x *lvnergy stored in the capacito0 * bdn1l eg7-unv;uxzr?

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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 9cxdh bxgo*+of2 kx wofit;)w)z ;d 7(onto the plates of a capacitor when it is connected to a 12.0-V battery. How much work was done in charging this capaci;ft( 2ow 7chowg*k+xf)doi)z; bx9 xdtor?

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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 c2gdje pzaa(1r8f*,hio-cc7uharged 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 consisuks31 d:s8zt7dnw zy7ts 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 consists kid* gdocqov3n4a *po64ulz( h: 2rqa*;mo)w 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 c7xccfe. 1xu--ts r5u:t7+v3eao eqk x onsists 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 co va79j 2t;yx iue7)ccknstructed 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 capacih dmvuy5n2:x*tor 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 50n3 cvvct48p/fj r2* ekv ;uu1j-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 i *fjvc u;v2j8/u34r c ktpev1ns 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 togyib3 7 89 ju7e(hj/k6qyvyk1o8yzai e +a4y c a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectrij eo/1aya9icey84k ku3q(zhiy g+vj 7y 67 by8c 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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