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习题练习：Physics Unit17: Electric Potential
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 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 tcf+d1 k48eg evector?

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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 q .a 5 n oswpme w1c,:gqv,v1bf;q wly),(kg+uis 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 objec :6h1tfiz d n9ie azxec8:2ft)ts are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. tc xa d)8fi:6eez2hz9i: ft n1Which 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 them( rgd0)5 2tv6 zfkp(hfxj6 pne6t/ nv direction 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 direfvuztyv6 c2cf1hkqp6;l y+9:f27s e vif/ x)ection opposite to 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 sphere. They(a-r sw/dq2 qn

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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 a 500 V picmj6h w503z-fgt;fci-+ qjjotential difference. If the potential difference is z ;c t 63ifg5+cfmhjw-j- j0qichanged 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 poin i*x*np)3jn n5hp0g(udl(c/j o8wvw(b ov/ uyts are 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 moved from point A tlg(a;ky r f8(eo point B along an equipotential surface.l (;ayrk(8efg

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An equipotential surp;fcz6 zw)dn7face 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 charv(* *i+ wq,)n1kas1po7 msnwuonso -o ge equal to that on the electron as a result of moving through a potential dif qs*o sio,-pkm( n oo7nvu*)wna11ws+ ference 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 hx4:sbg6o tlqw8ue: /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 correspb xyqjoz 0 l18-:l/zj l8mt rq-ktcq oz9n-4(ionds 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 poin*gx a.um9ct3x lnk-*et charge is 100 Vxe*tn kax-ml.3* u g9c. What is the 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 2.0 m from a negativei/ybw k 9st;0jx(q5cb point charge is -1/y0w ;stxbcb 5ij(9 qk00 V. What is the absolute potential 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 6) hbqlut 4 *zrqxm/n-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 the4hrb-mt*q lx/ n)u6zq 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+c 6bz6a:omxr at the center of a square is 3.0 V when a charge of +Q is located at one of the square's corners. x 6zr c+omb6:aWhat 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 alway m)iu (64rl6jx5 lnj3aukkqe)s 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 is a)aq yxvxp0(/xug.f 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 capaun4(:gcrfbxfseudmn,2(che+6 r 80 k citors are identical in every respect except that one has twice the plate area of the other. If t fguf( m0r6uxee r+4(: 8,bkdc2nsnhche 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 capacitance of C. If the area of the px 1sa)ldsk 6zboo:1m: m h. lvw/)-riclates is doubled and the distance betweenkosmwoa :bi1x)-c./ lz l1 rsm6 d:)vh 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. ,poomr7n j 5,kThe plates are immediately pulled apart. (With the battery disconnected, the amount of charge on the 5 jn,rpom7o,kplates 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 betdzqr fac2q f s,-.7agq:c3j9qween the plates of a given capacitor is weakened, the capacitance of that 27sjcq:a 3.q9- f,qzgarqd cfcapacitor

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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 constanth99 m bm38bkzy5j2vjfem;;stc -fm y 4 voltage by a battery as they are pulled apart. During this process, the amount of chm95be-s;8hty; m23jc fjybmfk v9 mz4arge 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 vol 8whafkg7p6* ttage by a battery as they are pulled apart. What happens to the strength of the electric field during k87*6thg pw fathis 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 dielectrg6m jdx-,. jmoeya*j 2ic material between the plates of a capacitomjomj da* ej.x,gy6 -2r.
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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 pa8uqcr(xxd gm- :) gh5g k-hv(oper is placed between the plates of a capacitor. What happe5gx:hx 8c)k ug -hv (qr-do(mgns 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 wp sj(,i+ls2bmler 5 9is placed between the plates of a capacitor holding 2lwrp5isjm ,+( 9eslb a fixed 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 wk0 ;kaqc +7edbattery 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 thd0kc+ qa;e7w kis 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 capacitan* ynpv :h2o jsik cecw3+2y5n6ce of a capacitor holding a constant charge causes the energy stored in that cahcs*n5c+ 6yyi jkn2v:w 3 epo2pacitor 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 th:t7if9 vk)fulg:ow- oe energy stored in that capacitor t uv:9:f7fw)lktoiog- o

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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-uuzq c;baw02; xl5in . What is the potential difference between pointswa0;cz5 luqbu2 i-xn; 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, /cmkjol x ))n//1c raiqp)6hdwhere the potential is -50 V))/p / likh 6)cc nmx1orjda/q, to 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 accelera*b-fjc l x2s4oted through an electric potential difference of 500 V. What is the kinetic enerxb2f4 js o-cl*gy 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 electriju efp67-ee ,zc potential difference of 500 V. What is the speed of the proto-u pej,ze67fen?

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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 thro*-cqh w;(wvc87svc bhugh a potential difference of 1200 V. Whqv(ccc*h-w wh;7b8 svat speed 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 g, mwtn;(qk)2spl1hqvhjm+0 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 electron is accelerated through a potential difference of 500r l/g )g5x dcquq0:d-m V. What is the velocit)-uxm0 5qd/q ldgr:c gy 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 iv2 g4 *(vfosc/lprt.fs accelerated from rest through a potential difference, and afterward the ball is movinf fcpg42/ rts. *ov(vlg 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 parat-7s 7ow4yk* zizbmaf r-l;;ebm 1 8knllel meti87-neazm7 *rwkl sy;k4;bb-t1o fm zal plates separated 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 o;pu yq cr0oc6;f 500 V/m, is directed parallel to the +x axis. If the potential at x = 5.0 m is 2500 V, what is thec;;u0y qocp6r 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 eleusmtbgy*o87 zu3; 0y3d -xcfsctric 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 thex ;fy3y3b z8-*0u du7msogcst 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 electric i)kp5s bbsc38field of magnitude 3.0 V/m. What ispb8 kb 3)sc5is 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 connectwnejndp6 ,hag42+ u pe3n6y4sed 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 posi pj +2eu pg6, 4nnswnya3d4eh6tive 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, separate p+(op*+b8p6 ophzpz.avckh(d by 0.20 m, are connected to a 12-V battery. An electron released from rest at a l8*6 boo(azp(p+phk v+. czhppocation 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, seg 6h:v(o3 rbagparated 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. When3bga6rg(: hvo 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 electric field of 50 N/C directed toward the east. If the vlhjf 9am l5:o)gdwe*6oltage measured relative to grou9mofjlwa6g5 *d) he:lnd 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 f *d;db+ ogmi-tdf9t1mield 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 atf+gd9 mdi ;d* 1mtobt- 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 bbi.8 w,iks5raw+e ,rf 12 V, it will acquire a kinetic energsir+w, b.aer8 k,iw b5y (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 potential at a distancex aig ai2v8j1p(aq *z1w16ihp 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 end(jsai 79) uwv.hb3h7zg 5ulch s of a meter stick. Find the electrical potential for the center of the met 7szh(wihb.a5)ju g c3lh97 vuer 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)twq *z :gc1(j(hg 8wad. If the potential is taken to be zero at infinity, what is the electric potential at point (0, 4.0: hj1*ac8wtq wgd( zg( 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 -2.06rig s,*i;dob-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 aro, sgb;i*d6i 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 m,ug 2+e6yx zd8ltno2charge is at (3.0 m, 0). If the potential is taken to be zero at infinity, whmz2 2 dgn+u8x le,oyt6at 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 c3*k lkku5bduo+(g2c gorners of a rectangle of sides a and b. What is the potential at the center of the rectangle if q = 2.0 mC, * cgg(k 3uolk2+b5dkua = 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 bp6pn7ba7.2n(fuajp two diagonally opposite corners. In the other two cab p7 7b2uppn6anfj.(orners 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 (charge k/iumudj2+ls,4 ) s jc+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 maba36;9myhnn uag 8nsle5w: +C, at the corners of an equilateral triangleshbgl9 a aeun; nw+583:naym6 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 capacit wkc21j: an gi)2rrz;o ;vupm*or when it is charged to 100g ;rjco1mi 2zv2n*:war)p ku; 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 areac6i43n z5jvfs.1dvnd ) si+li $0.50 \; m^{2}$ 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 f*-i v(u8wwm wby 0.050 mm. If the capacitance is 17.3 pF, what i uiw( vf8-m*wws 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 o5jlax8).4nyd+ eopqta.n a 3 wf 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 separati+xaw 6i7jltv0l w; ;hdon of 5.0 cm. If the potential difference between the plates is 2000 V, with the top pla lajww7i tx0dlhv;6 ;+te 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 battery. After the bahd,qy/e(nb48lcrbv ( ttery fully charges the capacitor, the capacitor is immersed in transformer oi(ly(/b b,r 4en cvq8hdl (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 energy is stored intardvoax: 1.19+xk pz the c11 vokd:pa.t+9zx x arapacitor?

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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 in the camtqbap,(x3m5 f4xwlvl. p,c18t e 9 twpacit,mp 3e4,vtf 8 5 xa.(l91qlwtwmpxbtcor?

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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 +/pzw el3qe y9c hv-4jit is connected to a 12.0-V battery. How much work was done in charging this capa9c- 3ypze hew/ j+qvl4citor?

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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 tht5igsar4 tfjla) o )s2c38,ls *ixw (fat 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 capac6z i xew/5zc -bwk3jl-itor 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 cop ,l+a 3edbon+nsists 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 pyjl8cc2 3vnq4vbi (47jryh 5nlates 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 pl4 5w+o7 zmyvy wszc;4rate 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 cfyxe310c),k e- am3 cs yx.ll6ptoo 1jonstructed 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 connectedzozq08v)td u) 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 dielectric has a dielectric constant of 5.0, what is the capacitance of the ca 0)to qz8vu)dzpacitor 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 hvz:h mzdy -82battery 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 dielectricdh8hz: -vmy2z constant of 5.0, what is the voltage across the capacitor's plates after the slab is inserted?

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