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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://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://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 vector?trp wwduc)/ rcl, 5f5 a.,ca:a

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  One joule per coulomlp 68ps ss)5ecwd we3;m,z tr:w6jy0xb 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 surroundi9x*t :. 12ornx pttrowr5wcm4ngs. Object A has a net charge of excess electrons. Object B is grounded. Which obrm1trwpwx:4oxr .tc* on259t ject 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 fig+esuo3 45u9gx2 vobk)w6yui eld

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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 tonbp)0: 71z jrfl 0irwj 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 hollow conducting sph02dtm inon: 4km7yu,,ajg 5ui ere. 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 resu yenl, 06i0aet to a speed v by a 500 V potential difference. If the potential differel6 0yaeue,n0ince 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 , wcl.b/ lh1jxare at the same potential 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 move*3wdzrvpz.tbjn*b3wn + /kb -d from point A to point B along an equipotential surface.kn/+wt 3bzn-dwj p .bzv*rb 3*

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential sur8kw+c t7r2rg wface 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 6bka4j9 zs4zi+ywm/2t0nd f y6+( qieoumu. ca charge equal to that on the electron as a result of m 90fy. 4 kaquii+o( 4dtes /m6bcnz+zm2w6yujoving through a potential 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 psfz.*a9k zf( mrt9-8wz*d kh a unit 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 cocc ot)e s-,2ynrresponds 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 positive ti2n6p:1 mnxe- dx) -sby-hzk point charge is 100 V. What is the2 -si:6txph d 1kn-b-e xy)nmz absolute 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 2.6 iz5fwp. ,jrulsry rr1*)ly.0 m from a negative point charge is -100 V. What is the absolute potentir1r,y y. )rl65ijz*p f uswlr.al 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 5o xsbts y a-vw:u+a3)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 the absolut5 so3 aa +ubyswt)v:x-e 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 sqgh9 ryt/m5.11c oqgtf)91/yxoxt vet uare is 3.0 V when a charge of +Q is located at one of the square's co ye9fx gt9cxo/1/h tvg1 otm5t.ry1)qrners. What is 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 consismxp: mvc g p3oxpa6f xi46,;k5t 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 ispzb6llo d (5lgd/yfyqr wc/0-1 4b zg* 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 lwh + q)p m4/7f1uqg;-qynzr/,pccr uevery respect except that one has twice the plate area of the other. If the smaller )cm1 ;pq/qcu/l hqfup7 +,n g4-wyrzrcapacitor 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 t ffo t+lw17kt9: uj3iphe area of the plates is doubled and t+ wi tfp3t1uj7:o9flkhe distance 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 removedh (4g//8gl vzosrq;x+ vgvw,mj tg-1o . The plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the plates remaiz+h /m (,x jv-rlg owsg;q14 /vt8voggns 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 ck/ uqno3)n hyd +h)9skapacitor is weakened, the capacitance of that 9 +k )q/nh)hsn3ukyodcapacitor

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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 voltage bm8g:+m9 fm gnl .zo;siy a battery as they are pulled apart. During tgf mmn.ig :l;9s8moz+ his 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 capacitor2q.cl5h 4:tbi- kp ovo are maintained with constant voltage by a battery as they are pulled apart. What happens to the strength of the electric fieloq-op ct 2.v:ikh45bld 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 ec17 o hy agf.r(kg;ra 2,uj0kmaterial between the plates of a capacitor.egjo 7h;gr0kf1ac.rk 2( y,ua
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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A dielectric materia 0sa gk ndyiv8ab+p:1e)vxqe8; z, /nwl such as paper is placed between the plates of a capacitor. What na8g): 1/ypbi8+ez a0ed; qw,nxv vs khappens 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 placed between the plates of a capav9wrw yk;0g/ur8gr1hy:cdq3 citor holding a fixedr/ yv3dyr u;rch1:gqw gwk890 charge. 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 connected to a battery and bechqarohg9ctzw.,e- 9v6 t 2u-y3ih/i vs ;lp5tomes fully charged. Thee aphiiyo,u- vql ttth 5z9h -932 c;rw6v./sg 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 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 capacitou bl6: f3jjhm,r holding a constant charge causes the energy stored in that capacilfjhu b63j m:,tor 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 the0d p /m*kys;0 tnp/i(v ihnk(k energy stored in that capacitori0(0ndh(/ pm i */;kkyptkvns 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 ew uuzwij*.-py;zj0u2 lc ,/ris the potential.ju j/eyu p 0 lz*rw-,;ziu2cw 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 electron from point Awko4a-*2gn wg , where the potential is -50 V, to point B, where the po*nkaw24-gwo g tential 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 accel wtbk7hkc81;xx ji0/ferated through an electric potential difference of 500 V. What is the kinetic e8xbj;i70wc/hk xfk t1 nergy 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 d-q(a3 kp2n ksif -4syaifference of 500 V. What is the speed of t( skaspikf3n a4q2 -y-he 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 through286j.viu(qjw vsjf3y)f aa 9 f a potential difference of 1200 V. What speed v9)wq.fs 3v6a8jiy2fuj (fja 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 in bx g+rfy7s1) cra::uzntvd/5 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 d nd304 -puyl 6e/uyaxpotential difference of 500 V. What is the velocity of the electron afterwduyxl 6p3edna -/0u4y ard?

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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 rest enc5) 1iyyv2w4, nl5qtt3ny uthrough a potential differencee1c2tnu55q4 y3) nvyinl,w y t, 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 between two /.ysqnv (fa+rmdf45qe(( bte . i w9xpparallel metal plates separated9b5 .frst+(.w( nqd fimpa(qey/e v4x 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, is dq:coq8m*c .s9ld9 gb ubc7ul7 oqx.,l irected parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is the poteouc7 b8xl97cg qq lbdqo9c,. s.:mu*lntial 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 fh stfn+.w.btz4g1i u;x, q w9jield of 50 N/C directed toward the east. If the voltage measured relative to ground at a give.qz9b,tjigf;h s xt.n1 4u+wwn 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 ohd)- ewi2 we:cymw (5qf an electric field of magnitude 3.0 V/m. What is ty w(c:)me-w5dqh 2weihe 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 connec/7ccztu9nbc qui5+1l x: fcc.ted to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate.x.qnu9fclccz u:+/1 icb7 c5t 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 12vgm6t7xz9 z kisi: p,4-V battery. An electron released fr 9ipzg: 46tvkx, msiz7om rest at 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 by 0.eot)q.j vjp/fo9ar(:9 ehrn+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 d+9q :9hvno.)(eta fprr/ eoj jistance 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 el7zhpqv: k 5xc.6 znaw)wj8zvj 3j-j-yectric field of 50 N/C directed toward the east. If the voltage measured relative to groun35j -akj. vjp6: vw-jzcx 78hyn)zzwqd at a given 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 direcfsi bvfzq )xn 75i*f4)ted toward the east. If the voltage measured relative to ground at a given point in the field )vf45* b7 q)fsfinizxis 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 so1n 3: 8rdcdoa7f0xof 12 V, it will acquire a kinetic energy (in the absen73 snco0:d dr 1oa8xfoce 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 disy d4-d,xpmbu wi/6 )oltance 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 d4 j8 xqfe :ggpo.if(,ends of a meter stick. Find the electrical potential f ,4d pqfgg.of :e(xji8or the 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 ivsb*li,2n)j-d 7 j9e jasx :vus at (3.0 m, 0). If the potential is taken to be ai79:ud b*v2-)lvsej,s jxjn 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 cak s)0iy34tr7b3 sicxov b 01gharge 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-nC charge at point (0, 4.0 o3 i c37byvktba0 4i0 s)gx1srm)?

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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 i*g 4kaz 18e8sqe8zosthe potential is takeqs e8zg8e8iao*1k4zs n to be zero at infinity, what is the 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 corners of a rectangle of sid1kx fsvq jli7 8.snh7-es a and b. What is the potential at the center of the rectangle if q = 2 inshqs kvx 7f.8-71jl.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 jq83 q8 a8y84j u-k hs.oamlrdare placed in two diagonally opposite corners. In the other two corners are placed charges of +3.0 mC and -3.0 mC. What is the absolute potential in the square's center?duqyo s8mq3r4.aj ljha8k 8 -8

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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, masy(f* s m34zioa*vh*3jkfa(,c.e az jps $6.64 \times 10^{-27} \; kg$) 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 x;fe 4dh0 ec/uku. (nd*xd:klq(ba*s, each of 2.0 mC, at the corners of aq;uuef(/b(k*0hes xx4acn:d .ld *dkn 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 p3yvwmq ryn(xynp3 1 j.9 8zhd4lates of a 2.0-mF capacitor when it is charged to 100 V1dw3xny3m8y ry p(9qv h.nz4 j?

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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 plantcx ,6/ jrdg5tes 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 1mbk.m i- jsi fdz sx.x7:p4h1the plates are separated by 0.050 mm. If the capacitance is 17.3 pF, what is the plate z7 jxsi 1 .b:mih-.fs1xkm4pdarea?

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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 platez:pj/l4 yygll 2gk+ r4s 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 cm. If the potential es3 pfk r0)5kfe7:mxj difference between the plates is 2000 V, with the top plate at the higher potk)fskjer x 7f05epm3:ential, 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 capacitonxwtf8 cxl3:1 r is connected across a 100-V battery. After the battery fully charges the capacitor, the capacitor is immersed 3xfw:ct18l x nin transformer oil (dielectric constant = 4.5). How much additional charge flows from the battery, 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 capacitor. How much energ):t g:emen z+py is stored in the capacit)n + eme:pt:zgor?

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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 enev2 kcf4a0dnq)rgy stored in the capacitc0vdnf 2a4)qk or?

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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 connecj7 wjt4d khh7ibl3vr(s s456qted to a 12.0-V battery. How much worirlwj k 5h734s67jsqd4bvt h(k 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 soy gi1i-:pov ;3u bpy4sufdr5. 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 consissq sea. 07kjm 5ct;ug3ts 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 of pla1m;yqv 1lgan9t: y 3nftes 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 p2h vi+v .b,hkx+adw; slates 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 plate area of 99qfn xljj;/-0 rj zzd$0.40 \; m^{2}$ 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/macrnwtl/8vk 6):mp 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 and becomes fully chargedf3xw5w wxt03 p. 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 capacito0fp 33w tx5xwwr 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 charged*kgx,853glbh ,a u0 xiya mh*/2nbzhr. 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 agx *h l,,8a3ahnh u0/ xzgryi2bmb5 k*fter the slab is inserted?

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