State the law of conservation of electric ) kjs94ig9t urb 4q6dd+rev9fcharge.

  Is it possible for two negaxu:6 mfp pe ;:zczh js446zon*tive charges to attract each other?

  Is it possible for a positive and a negative charge to attrhpti9tex ; + )ft(y95/2smehuqottx0 act each other?

  A glass rod is rubbed with a piece of silk. During the process the glas3jjka pb-r tj5qagzrl31 0)-v;zjo5 is rod acquires a posiaz3b)0-1lqj o3 airvrj ;5pktgj z5-jtive charge and the silk

  A proton carries a

  The model of the atom shows a(xmnb:z* :gthfo s-/mge(wj6ce,5 da

  A neutral atom always has (olisnkyql9k6n ,mi.1r p): a

  An atom has more electrons than protons. c,1.2x*foz55 l3hs mn6fpvts8 br11w p oybkr The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rbkdyn7o4 ahj.e sm,cf-, ) k9zeferrecnd-z7f, )b9.sjmh4 y k,koe ad to as

  Materials in which the electrons are bound very loosely to the n4okep 7tf +. c/h9do-u yybd.ruclei and can move about fo7..-h9rud kycdpetbf 4 y+ /oreely within the material are referred to as

  A negatively charged rod is brought neawx /p:qo lu4rcrr7 76t5byi i2r one end of an uncharged metal bar. The end of the metal bar fl6 7 2tq7wbc5 :/rr4uiirxpoy arthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere ; es y-pv4i:v52kj2-pzmzeta B is neutral. They are placed nsvz42vmp5--ajy i k te;ep2:zear each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an ep-t7*4kz u/pghpxrl2almn 0 en 5wg.7lectroscope positively?

  An originally neutral electrosco: rs v/)o4t 79yob7ziqszz 4rekun f65pe is briefly touched with a positively charged glass rod. s 9o 77qorzz u)ftrv:b e z4yk4is/6n5The electroscope

  An originally neutral electroscope is grr0y.kq u9(w -gq-jn8oc *p -fzocs5svounded briefly while a positively charged glassqrjpcf0(u-y-gvs5.n co- oq8z9w*ks rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopfhaa. )qj4tegh3-5rz e, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lea4a3z ahgtqhj r)5-e.fves?

  A large negatively charged object is placed on-swj kw4j.+scw( 0c lk an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on ewss- w+wc 4 cjk(lk.0jach ball?

  Charge is

  What are the units of the Cok6 5ht zj2hxv+j i4ph./2yp yj+iaok, ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la 6 3ne :--ttdd)udi3dtmdr v/jrger in magnitude than the seud)ne tdt 63--/td3dmd:rjivcond charge.

  Sphere A carries a net charge and sphere B is neu4q0fcmb twydwarapdr,80+tx * d0 g.5tral. They are placed near each other on4t5wxq*mpdd+ a.y 0g0cfra0 8w dr,b t an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If j.rd *bl 1n,p:4ar euvz18omrthe charges on both objects are om pbr,:zda vjrel. 8nu*141rdoubled with no change in separation, the force between them

  Two charges are separated by is5l7eu aex :4a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of 7:ei5 ua4elxsd/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whm fj1u/mwr(:y at happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-foumr(j my/uw:f1rth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Wha()h tpy alj(lu3+xz6t t happens to the magnitude of the force on the proton if a second electron is placed next totp ztyla(j )3lhx+(6u the first electron?

  An electron and a proton are separated by a distance ofx:duopuqsc tz40 n11. 1.0 m. What happens to the magni :o04cp uxzn11u.tsdqtude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens t 1bh(c8nv* 0/ jujlaoto the size of the force on the proton if the electron is moved 0.50 m closer to the 8v(* o1jhtj0bac l/nuproton?

  A point charge of +Q is placed at the center of a square k5+ab-rv8oxltoxez/ywkv;3 i cf: 4+. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on th4-lcwvka35ko+o 8 t vbi xxe: f/+yzr;e positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Qstr5mb t;l* 0vmgm.*ttk ia6 / is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on r*5gv/s0a;t.*it bmt mtmlk6it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectory-z fgk xq/d.ywct5t;): cdh*?

  At twice the distance from a point charge, the strength of the mno1ovi1 5:vd)8pk5s ie +-dk v1uzmbelectric field

  Is it possible to have a zero electric field value between a negative and positio(i(l3 4 myib tpyn,sp*e(lkxaf39 c, ve3 ,csyift ,leop9((b mk4lpxn(iya*3 charge along the line joining the two charges?

  Is it possible to have a zero electric field valu 55u0 ab208b i ehl5edh6rzeuq2 ujmc2e between two positive charges along the line joining the two chargezu2a80h5 r d2c6ue5ejm0leu5 hi2qbb s?

  Electric field lines nea0j+sblzol mu2ho6/ 5ar psitive point charges

  The electric field svs ce2ocsqp6q6 :g+ 63ngvl3khown

  Can electric field lines intersect im,zc9d*- o uifn free space?

  A solid block of metal in electrosgwksvzxw:m:.wum3 ; -tatic equilibrium is placed in a uniform electric field. Give a statew.; 3vw:m:wgm- zx skument concerning the electric field in the block's interior.

  If a solid metal sphe xu xca5tp4t4*t nnr3:re and a hollow metal sphere of equal diameters are each given t: nnp4t *54rauxc3xt the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminb+3rs 3d: ihv :b8fjyfum rests on a wooden table in a region where a uniform electric fiel:byj irfd+3:s8hvb3 f d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic /im8qx s)m;m v-9 gtyfequilibrium near an electric charge

  A positive point charge is enclosed in a hollow meta)u gx cw* 2tsg9d,mx9hx2)g uxllic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dir9x2s,x w*hgm 29uxu)) gdxgtc ectly above the hollow sphere has

State three properties of conductors in stnz bffa yxx:m/-4; q3natic equilibrium.

State Gauss's law.

  The charge carried by one electron is 7jvyq8f4v 3nbe33b / lfp1o.hib a0gy$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mCx o*0yw +l lot,mw6iz+t6km5l . How many more protons than electrons does this piece of plastic hm t6y+x5*w6+omzwoik l 0, lltave?

  What is the charge on 1 kg of kbd)pe.7ncqw12 ip od (l+m3gdb8 3e2a s-xrvprotons?

  An atomic nucleus has a chabbhar7src (0 pt ,c4a.2l8ggjrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separa , o/ieguk;l- zpxb/:tted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of/l; ti u:/ekgoz-bx,p the electric force between them?

  A 1.0-C charge is 15 m from a s j sao1jjpz9z*9aj 9*lecond charge, and the force between them is 1.0 Ns*19az99 jpjjoj* azl. What is the magnitude of the second charge?

  Two 1.0-C charges have a force . kr9i23 7ndjr qds4yubetween them of 1.0 N. How far apart are they?

  The force between a obd9izq.al7xr e9 /5 d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0zi6rbqb7 sx4m 42:j/zqpg .ry-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bep:b i42m6rq74z.j zsqb/yxg r tween them?

  Three identical point charges of 2.0 mCdvn86xv/ye) b are placed on the x-axis. The first charge 6nv/b y8v)edx is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charg hvw(,76 ylli/ud ni/ge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the6huyv/ ,i wng(/ldi l7 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00/ip,o+c 7nuzb mC at x = 1.00 m; Q2 = 3.00 mC cu+,b7/pnzoi at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seconm dwdp3;kh8aaecp ;,,d point chaap mdd;pw;a,3h,kce 8 rge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0);myepy5jh5w.5 r*upi7 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of th7uhr5ej. y*my5pp w i5e net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.a3ejru)3a7* coevttr4q h6+ j0 nC is at (0o)jaerv 33hu+tjc*t e r4qa 67, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pn*1reuz 2egy;w,mud0 laced at the vertices of an equilateral triangle which measures 30 cm on a side. What ,mzy w1de2 u0u;rnge*is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ;65yk; b-z.f ltnnprzand +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it 6.kntp;n z5 -rfy bzl;would be zero?

  A +3.0-C charge is at the origin and a +9.0-C csbpf9h -db3uy*26lsa harge is at x = 4.0 m. Where on the x-axis can a third charge pabb2f*sus9 -6h d3ylbe placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q7.sxs q-cl2upe)cmu . ox1i7r is placed at x = 2a. Where can a third positive charge +q be plarco.-sl s) xqc 27xp ue1mui.7ced so that the force on it is zero?

  A copper penny has a mass of 3.095q w vec4diu3 g. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of gravity by the attraction of a fixedds(l7dssm *h33dld( sh*ms 7s proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc)3lzq v0 wsag+ucne ()ting threads which are 30 cm long. Both are given identica+u )w 0cgnazle)qv3s (l charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What i dmjr)tmq :j/tm:p) *wartu* gh ;;pg0s the magnitude of the electric field at a distance of 1.0 )mhmgagq pj rd:ut:*m;jpt; 0 w/ )*rtm from the nucleus?

  What are the magnitude and direction of the electric field at a disty )x(sxje p)o/ance of 1.50 m jxspe /)yo(x) from a 50.0-nC charge?

  A 5.0-C charge is 10 m from6b o e broe+z2sj;,ociu847 lm a small test charge. What is the magnitude of the electricoeobsluzir;2oc 76b8 4m+, e j field at the location of the test charge?

  A 5.0-C charge is 10rzz2xg(q+tx9e k z*u(; sx-fv m from a small test charge. What is the direction of the elec + txrq2uzx*9fk -sgxvez;z ((tric field?

  A 5.0-C charge is 10 mwq sz 8vripnnvk-2 e0;o.k( r2w 6pld9 from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?6q0 ww k e2p-vidv (krnp2;rn 9o8zl.s

  Two point charges each have a value of 3.0 C and are sep/t/jgv,haqw m )he5+ffe 9l9rarated by a distance of 4.0 m. What is the electric field at a point midway lhw9r5 f, jeg/qvet/m9+fh )abetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mar0ae;v- m9wje ok of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect-o0v m ajwe;e9ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the /ee p n)0yxfc0fax6)jd+gx r,0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linee rjcffpe )/+a,dx)0 n xy6x0g joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and xjh lpbfck p,82 +qc+r d7a0m/t = 0.20 m. What is the magnitude of the electric field at the point midway part2 , mdp+7qj8k c+fhbcl0/ between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th 4+fta: 0n2fhoudjs;uh*mud;,o mw.i e last corner is occupied by a -3.0 mC charge. Find the electric field at the center of 0;udff* ;24o+j:d n,iuw mohusa.t mhthe square.

  Consider a square which is 1.0 m on a side. Char0v,rb; 0 kuf1(fos wmnges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the n, fv001f; msow( urbkmagnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform nb*l iq8gn1t 1electr8g1nl n*b q1itic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a m2fmuoeg:7wv b, +ay7 tass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0i 7j zj33dolw4d o4 +gzdgf3k,xi e(z;.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fod3( ,z 34gj4iokwizlgf;+ je7zxd d3 or it to be suspended?

  A foam ball of mass 0.1wi /6-f f5qxl2aeld,x50 g carries a charge of -2.00 nC. The ball is placed inside a uniform elex5l-dqew,a2l/6fi xf ctric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnit3-n1jv mgqbbp)(. sifude of the electric field 5.0 cm fromqip(js. -fn)v13 bmgb the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargnjz pqdd9mb / 2jh:x z-dcp0()e of 3.0 mC. What is the electric field -9x dqzj ddb (m)c/hn0z:2pjp6.0 cm from the center of the sphere?