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习题练习：Physics Unit17: Electric Potential
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)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://tiku.one/test75.html
 作者: admin  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 following is not a vectorx n6r,qonzr+-+iik ; d?

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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 h. tua00njaesy7:m6s 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 suraybe9k6j0z8 it6 abh 8roundings. Object A has a net charge of excess electrons9ka 0t ya6i8eb8hzj6b. 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 electr:+ocnjv0bt ak s/c- x,c fcur+y2(8dwic 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 electric1kq+hbse5 5hw 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 holc w5 iqk2mm*hg ca0ym5+1izx8low 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 rest to a speed v by 3xwwf,6j r lu293t4 v25todim kd,wtma 500 V potential difference. If the potential differenced wd3ojx3tf,rt wtwmlmv224 u 69i k,5 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 iw9u 6cr:twx* ks84x dged 12tfs 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 along aq*6xaxee+8 f2al3el +g ph-bcn equipotential surface.f-ha2 xq 6geeea8*cbx+ll +3p

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surface must b7czr:g)z* f lqe

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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 p5cgkw t5-)+ a a5pd5pel*zd zdarticle carrying a charge equal to that on the electron 5pdpc5 )- d*w+ 5zd5ztgelakaas a result of moving 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 a(w:w,e39p qnqzu / (np jx t.wv8pdpw, 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 corrukekz,dr)9,e) kki3e0 ww ( ogesponds 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 posafjbog0c0w,n)0 vr.; 5fwk jf itive point charge is 100 V. What is the absoluten o05,)wf0frf kcjw. ba;jg0v 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 poin23hfyal 99ud nt charge is -100 V. What is the absolute potential 4.0 m away from the same point char ua929l3n yfdhge?

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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 kf38 1(lwinh 2hv2mq-z knx(q 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 other corners is also filled with nw8 (q2hv(iqn 3 khzk-12mfxla 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 u9zje8.h vj)n 3.0 V when a charge of +Q is located at one of the square's corners. What is the absolute)veu hz n.89jj 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 alwi 8 0.,ilowehg.g-i,dgwvv0 pays consist 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 6nw nf6my ok ga:c2.l6is 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 areb pxki 2vp6vymcb8: :u2 l0t)z identical in every respect except that one has twice the plate area of the other. If the smaller capacitor has capacitance C, vp:x2l )c i6y8u tkb02 mb:vpzthe 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 the area of the plates y ba7;jfb.qb1 is doubled and the distance.f yq71bjb b;a 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 hzaatvvgn2ro2;w*q pwmr,n 3;p :9 7qthen is removed. The plates are immediately pulled apart.*q7 ;,nw9w n2ra3vtg ;pq pz h:mvroa2 (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 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 oo8via d;25y z-hz68h f xnx1 h9aeu7yyf a given capacitor is weakened, the capacitance of that capa78ayfxy8hixn v69h yod5he ;2uazz1- citor

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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/*.cr/ he l )zt1jcuni constant voltage by a battery as they are pulled apart. During the . j/c1z*/ilrnuc)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-plate capacitor are maintained witho4n+w,l2qsh.m9 gql g constant voltage by a battery as they are pulled apart. Whh n, o.2lqlg4qgs +m9wat 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 thy8x/xjg -jp: ee plates of a capacitp -/:ye 8jxjgxor.
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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 pl1azy ;wh3 l.papch()ao3 nhsk*9u*i xates of a capacitor. Wha*9)aa1xn3 zl w(.op;kpha iy shuc*3ht happens 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 plat0 es/ bc+)b3oxzxy x ;olq:lo7es of a capacitor holding a fixed charge. What happensb;bz +o3/s7xoc qy0o)xlx e :l 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 becg(: e yes;owqkbeq45+zw/s j-omes fully charged. The capacitor is then disconnected, and the separation between the plates is increasjeso5q:k 4swg -bz+ew;/ qe(yed 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 a6+r)ao j1h v7ki:3fb*shvir;bn/uw t capacitor holding a constant charge causes the energy stored in thura)tij1v;3n*rbw/ s vf6ihk+7 ho :bat 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 storee/ /lxgsisedd27v- vegh.20q d in that capac v xhs-ev7s0q gie/g 2l.e/dd2itor 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 tkak5s5h1(p q3 n92sq skz2npm o move 10 C of charge from point A to point B. What is the potential difference between points A1sq hp 3sn 2k 59qk(2zkna5spm 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 el 5jkk8mfb+h m bn.v,4hectron from point A, where the potential is -50 V, hmj4fv+ nm ,. 8h5kkbbto 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 (fybh;miuwro l)yi*4uh;c( 7electric potential difference of 500 V.umfcbi(h w ;( i; 7uhy)o*yr4l What is the 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 through an electric potential dyv8 p5fsv 08ycifference of 500 V. What is the speed of5v088yvcypf s 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 through a kib.c,x ;3xxipotential difference of 1200 V. What speed does it acquci;xxx,i3 .kbire?

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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 moving h8baw9ip7*o 1c jp9ql$8.5 \times 10^{18} \; electrons$?

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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 potentimnc v3/;9 kozbal difference of 500 V. What is the velocitybcz omk; vn9/3 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 of8ty+ uk rd)7q 75 gu:ts8yy+(nkpqcqd 20 mC. The object is accelerated from rest through a potential difference, and afterward the baln+ky:k7rdtd t5uuq g8ys 7 cqp()y8+ql 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 potentiawegre 7 +di1j4l difference between two parallel metal plates separated by 1.0 mm. What is the electric field betwe 74ie1r+e jgwden 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 magniju p(lc)jyiei 8h0g5 ,tude of 500 V/m, is directed parallel to the +x axis. If the potenty)j(h0c58ilji ,ug e pial 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 electribdf+ykrw -z6d4+3keq c field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point dfk qd-+4e3 y6wkr+ zb1.0 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 ap2k2fb*bm q)tv uzy t2 e.j(c+long the direction of an electric field of magnitude 3.0 V/m. What is the change in kinetic energzy2mv+ e2.(2jt kbqf)b* uctpy 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, sepy- k./ sx;oqxy2*pql iarated 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 xy lkpxy/o-.s2*qqi ; 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.yegr6fmx qq000f67ad20 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 distancxdm f 6y7rq006 q0egafe 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 a 12-V 5e2:mbvv-ck obattery. 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 plate, what is the speedvov2 c:e5b-km 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 electbz8u8: lreyh 8ric field of 50 N/C directed toward 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 p 8 8r:zhbl8uyeoint 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 5 +enw ned8a-l9n ruh3tr* 0qm,0 N/C directed toward the east. If the voltage measured relative to ground at a given point in the field is 80 V, what is the voltage39,mtn e +u he*-d0rnlan qr8w 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 differ sj*bl;-nru4r ence of 12 V, it will acquire a kinetic energy (in r-*4rs jb ul;nthe 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 a distasecli f*9c 3s)nce 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 electrical 61m+v h .(v3ackysb ncpotential for the center of the meter stick.k cn svch6yv1+ ma(b.3

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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) aj7br 68guk skw(f(s;e 3t v4fjnd a -2.0-nC charge is at (3.0 m, 0). If the potential is takekg s fj6w t (r4bjk8(7;s3uefvn 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 athh5.vo:pjjn ,kbd ha- a++ jk* (3.0 m, 0). If the potential is taken to be zero at infinity, what is the+hdkhvako-: +a,5j jj p.h b*n 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 a(w3l mlnoshlz87;t1 jt (3.0 m, 0). If the potential is taken to be zero at infinity, what is the work required to bring a 1.0-nC cjl1 (ln; 8s7wh3tzlmo harge 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 cornerd,t: mcsf sk );z97mwqs of a rectangle of sides a and b. What is the potential at the ceqd:t fkwzss9c ,m;7 m)nter 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. Charges of +4.0 mC are placed,s ovvv4 548.oi.nvdva-xu 17b kx rqg in two diagonally oppos i81o7v,vao-q5 rvu n4s kbxv.vg.4 dxite 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?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An alpha particle (chams,8c2mmy/d :bq ,ur v(n; tnxrge +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 o )zw*4uz b+9r ohx1rj2og6t mnf 2.0 mC, at the corners of an equilateral triangle o12ow9z+ nzhu omgt4) *r xbjr6f 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 whenjo ak(: x6l4fuiggyzu6s r17( it is charged to 10uoijya1zg 6kl4x(67 rsf: u (g0 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 plates50i 2t vmdq;ky 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 are separated bkhz18+,opn;rx +wrms y 0.050 mm. If the capaci+r +kmxnz; s8o hwp1,rtance 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 ha gw)4zx0qtpw ,/o4ra; b j(zpms plates 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 capg d:ia m flp j9xd7mb/* 3ql,e:)x9lx56 urzdlacitor has a plate separation of 5.0 cm. If the potential difference between the plates ixfxlr9 z9qu:dl pilbgj)m *: mx 7a3d56l /,des 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-V batter6n4wj f5 zfrxx-; e oy.,xavc0y. After the battery fully charges the c; wof-,c xez4n 6yjxx.fva50 rapacitor, the capacitor is immersed in 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* b gryhqtnis7g i29:-. How much energy is stored in the capaci yhi7tnsbqr-g*:29 ig tor?

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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 acrosmqjv,d+pic3 ,hn6k0 7 nll+ uks a 15 mF capacitor. What is the energy stored in the capacit vucl0l n67,k,p 3mhqkn+di+j 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 connected 9.bdooadt mt. 7r 1sv.to a 12.0-V battery. How much work was do ..r9osbo td7m. 1vtdane 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 so that it st op+v0:h,uut20ikw pv8 5 agwc n3mpz-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 o (svgc8y 4pyc/f 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 cap)iep8l9i krvf7q 7,hh 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 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 pl,n d6) dzic7hby6. fmqates 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-uy( n2c2o5 gajwrw46gu i2 mq 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 constructed with plate area of (k3ufg jlztwtu,-f,yg350 ,wtba* yn7lp1ey$0.40 \; m^{2}$ 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 5h +1yrkdu/tsy/a6 ikto 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 dieu k+hay6ryt1s /5 /dkilectric 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 p k1dbux6h5rv s.tk; a kwx7h4.nz,.ccharged. 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 ish.,k;k6n cw17.vt4shbx par.z 5kdux inserted?

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