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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://autodiscover.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://autodiscover.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 notrx bh l9kxxo 50g47 (cnr+n.tb 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 coulomzio emph8p-.)4cadf6 ;*fq aj b 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 a9;( i)e74rop bcwf wtnre insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object iwfine w; )t497 c(brpos 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 l(,dteco0i n6the 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 to the electdsc ih*f4 0(r dkte3d+ric 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 h(9+mo1 eanlnyfmj rv hplsu (6*4v+8rollow 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 oqgct 0dz;e bb6 wnl,73t*o u*is accelerated from rest to a speed v by a 500 V potential difference. If the potential difference is changed to 2000 V, what will tu0qtc ;, *tzbgwndb l*e73oo6 he 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 xm*zb53 :- v,d,vu mi 4s1cz1olret iasame 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 moved from point A to point B alon 4ig/ju.n )m/k9l 1z yg)adrlkg an equipotential surface) 9kngkl 4glma1ruj// z .dy)i.

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential sur 25mb xu0i8epfface 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 -*fxk6h 6h7tcte,xa 3zuasp5 to that on the electron as a result of moving through a potential difference of one volt is,63ehatx*u7sak5p- tcx6z hf 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 unitxm p9g+e :u5fe 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 corres4)8 kzw -y6 gl5vwqscaponds 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 point cybhu9ag i13o )do.5 0rtdojz;harge is 100 V. What is the abs5d3tbay.ih d o);0jr1zgoou9olute 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 negative point charge ds)6xvf( ae6ox bo u//is -100 V. What is the absolute potential 4.0 m away from the same p f6ux o x6(so//v)ebadoint 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 cp+(5aj2s; fi.hx e 3yxddia.e enter 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 potential at the square's center when eaha.sjdd. i3efp;ie +ay5 xx 2(ch 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 dn7hjh1xi 70 g/mu /uya charge of +Q is located at one of the square's corners. What is the absolute potential at the square'sh/unhm1gx yud0/77i j 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 twoadip/-g)6-nh f w j4qx e::diwtf.*uf 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 ag/: c)a6 c5efq;h czm6ga5jxu

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two parallel-plate capac::q 9 ultk3fwbitors are identical in every respect except that one has twice the plate area of the other.:3:fq9b l wtku 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 capacitanceg/ txzk oozi,;lm0k3lw45qe6 of C. If the area of the plates is doubledx4z3o lgmz tw/kq;0i e65,k ol and the 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 removed.c-v ashkg y.*7 The plates are immediately pulled apart. (With th7as cky.hg *v-e battery 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 between7yrwe 4+q.vac the plates of a given capacitor is weakened, the capacitanc+ecywa7. 4rvq e 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 capfb 6yw6wh8l 8-fidq0n acitor are maintained with constant voltage by a battery as they are pulled apart. During this process, the am8dwyibwln-8 0f6 qh6f ount 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 voltage b:/ qu.zdkkh +fy a battery dk. q+fu :k/zhas 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 the plates of a riww/+e/ asaai7pk3;xas9 1m capacitor./ w+/7ei a aapmrxs31;isa 9kw
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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 platem ,khl8lza)yc5, uf;js of a capacitor. What happens to the cap5 ,,8jmzf;a)lkchul y acitance?

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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 ito ucih:z.iy; ;jx2 :zxo0,u capacitor holding a fixed charge ,z i:u.xc0zito; oju:yxhi; 2. 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 becomes fu 0nzg lng8cki8ux 5,:glly charged. The capacitor is then disconnected, and the separation between the plates is increased in such a way that no charge leaks off. The energyzu5 lg:g8cgx8nn0ki, 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 /yvsny+2;sn r constant charge causes the energy stores ;2ryyvn /+nsd in that 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 xx yq ;7v0gtfvhm.k 46causes the energy stored in that capaci.gx0x6v ;vhq t 4kmy7ftor 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 poi dh86tyjbwwun6gos82 *ewy o-18 j t/xnt A to point B. What is the potential difference between p8tox-y jo wt*h8djsy 6 b/61w8g2 eunwoints 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 fsly/htx,n2emlt3 a 3:rom point A, where the potential is -50 V, to point B, where the poten3l/h23amnslt, t:exytial 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 anxqxj ti-,e ig.vh/ n4) electric potential difference of 500 V. What is the kine h.,i) ixnj4g-tqe/ vxtic 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 through an electric prypoqdjg(0m. p i60; lotential difference of 500 V. What isj0 0l ;(pqdg i.p6romy the 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 falls1:r :cjfg4fxp through a potential difference of 1200 V. What speed doesfc: 1grp fj:4x 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 9nml zt 4 sj(jqb14ci(bo/qzlhw-)2p p1 od:(j.0 V do 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 electronzn8a so 8n/-b gx/;mzz is accelerated through a potential difference of 500 V. What is the velocity of the electronbn zo/nmg s/z-x8;z8 a 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,l tk* f 38zjfqi(gpk;w(d/6kqsoz(q a charge of 20 mC. The object is accelerated from rest through a potential difference, a z,jk;t(*kkwopgiq(z(8q6 f3 d/slq fnd 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 pavzvj.4g;x5h- yko.qv rallel metal plates separated by 1.0 mm. Whath yov.5jk v; .vzgq4x- 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 directed puorz)jub t 5n 2+j(z;yarallel to the +x axj j)5tyo 2b;z( uzn+ruis. If the potential 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 td63 ylf s 7k ho;:+ve,0fo.:vtcepg iuoward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of thasf0cl e:oehpov:u i .v,gy 7kd6+3tf ;t 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 electrifm*hl*wim0 w;;l a/t hc field of magnitude 3.0 V/m0 /iflwal* hh ;mmt*w;. 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, ar tsjoyb*6(7ium2nt.8iqs f *h1f6ej ee connected to a 12-V battery. An electron released from rest at aitt 8if*s 27.*msnuf(o1 6eehjbjq 6y 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 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 m6x/ 4ry sy :hv2yi:ioc, 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 av4yh r:s oyi2/:icx6 yrrives 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 0.20 m, are connected to avr.5f ,1 d9s0j 6tldgudjbsv1sf :mk) ;(ritq 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 positivd: j juirsts)m1drl g5d f kf1t9(v06q,;vsb.e 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 v5x i5hdv.( ,v19lpumqaw ew, 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 1.0 m directly east ol,(5ieu 1d xwpvv9hw,q.m 5vaf 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 towarqx2+ pfq ; 44qhx0zkhpd the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltag q +h0qxp2p4k;fhq 4zxe 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 oc: xul0x qb9.through a potential difference of 12 V, it will acquire a kineticxco0xqu: 9l.b 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 potentiach1jej)3.hih ba *tp 1l at 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 stick. Findmdwor3scnl s 5 m2f2g n*(u91b the electrical potential for the center of thr2w3o1dbu5ln *9g csm ns2f(me 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 (3.0 m, 0)./x7d3zm2ciftvo0.l :i.b sqz,/dnjj If the potential is taken to be im/ zz.2b ./qt3d7 n0,d:cijof sljvxzero 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) li r49, wym21qj8lkf(eh5cc iand a -2.0-nC charge is at (3.0 m, 0). If the potential yw1chk9fc( 4r5qe li 82li jm,is taken to 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)frkr nu6;3l,p 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 requir, fr;kpun6r3 led 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 arq0r3 rmx8i7/aovpz eqsq70)e e 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, aniqrsx or7ea/083 ezqp0 q7mv)d 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 ,gtvc0ijbr) 9.0 mC are placed in two diagonally opposite corners. In g9trc ,vb )i0jthe other two corners are placed charges 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 (charghwu1-bclh(9-b lw)ya 0t,co l e +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 chargecv)shqe .gpp/:p9)x js, each of 2.0 mC, at the corners of an equilaterjq).pgh 9:vce)s/ px pal 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 v ),2hunks 1c;ld9ox zit is charged to 101) lkn2d v;s9ocu hx,z0 V?

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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 w8l2*juxy vrwdh +wc,-j,t8yarea $0.50 \; m^{2}$ 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 fi 3 lt*:awukbzwm;s .. yy-i)rzlled with air, and the plates are separated by 0.050 mm. If the capa*kwwy u3bl iamyzzt.):.s r; -citance 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 ar,1 32m-tind we vksc1l5.s.oha z nf5eea $0.20 \; m^{2}$ 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 separa58:keqv snyb*r c: vnhp; hiif c* /7v2zp*:jction of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the e7nf k8 zpyc 2 i/vc:*pcsvrh:5*:bi *qnjv;h 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 battery. Af2 swukg4u(1:c*,u f z3d ksczmter the battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectric3ugc14kk d us* cu2sz w(mf:,z 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 energy is sjae r28zphk.,tored in the cj peahzr.,82kapacitor?

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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 capacit5r s5c*h5ny3.(aikq djzzy/for. What is the energy stored in the capacitor?.( s5yr5 qk/5dzf3 iyjch*za n

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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 conne8 .wbftjn.dl*m ;qe: emx3 e3ucted to a 12.0-V battery. How much work was done in cha3 bnwm e..ed 3lm8juq;xtef: *rging 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 that 0ac t;a;xgij* 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 capa;oh ,yz eqj*wm :gn/8zcitor 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 consists of pldex,ank r*9m(d. g2j zates 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 cappbs cfjcq*g-vn )c /y9ek776k 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 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 wit k8(xhza 1f:zkh 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 aa,y6 *bh2hud 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 amk2, sobg9 /ph 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric that completely fills the space between the bp9,shg2o m /kplates 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-V battery and becomes fully charge4a9bl*vqi - 7hpc 3+ibjhuk/md. The battery is removed and a slab of dielectric thatmhl i9+qi kbj -b4*ca37u/phv 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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