State the law of conservation of electric charj je4,10smjmkge.

  Is it possible for two ne7l3b6v lx43mtif( zldgative charges to attract each other?

  Is it possible for a positive and a negativ 01 bb1uykkt)whmiov5a7b8 o0 e charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process .umj3z8/ob.wa f x6t ur fv4k9the glass rod acquires a positive charge anda9bj.3fv/k 8xuuzw. 4f6torm the silk

  A proton carries a

  The model of the atom shows a5 9)kcdj) iu sjqb pqc)9vx/m9

  A neutral atom alwaysp+ixi9o+vn fl ;fh/r 6:v5ckx has

  An atom has more electrons than protons. The atom is/w.ael jwv8cfm.y+ +h

  Materials in which the electrons are bcnmd j,74* l to 2gv1ckq93lqhound very tightly to the nuclei are referre j,2 g l39qvc*ol dmtq1n7ch4kd to as

  Materials in which the electrons are bound very lo)irt fxncoj6 nf;0)d ig od;9r 2isz8(osely to the nuclei and can move about freely within gf(rsc0nt or i) 9nidixf 68d2;jz) ;othe material are referred to as

  A negatively charged ka:4d kmgxw e ;c4slc5a0e08n rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from ;m5d4g0lw se0a8 :kkxean4 cc the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plaqgm4b 6jdh :w:ced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemen :j46 wqbdm:hgt is correct?

  How can a negatively charged rod cha-3x b sci(tc2r1y -aabrge an electroscope positively?

  An originally neutral electroscj n8 -pv/ erxram1*u1qope is briefly touched with a positively charged glass rod. The el1 x/r e rq1mnj-ap8u*vectroscope

  An originally neutral electroscope is grounded crj t5d z))7pyqs2q(vbo)hy* briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electj)qb ytq *5o7sy2vp) (ch z)drroscope

  A positive object touches a neutral electroscope, and the leaves ses q**qon 5kdr/parate. Then a negative object is brought near the electroscope, but d* k/srdon 5qq*oes not touch it. What happens to the leaves?

  A large negatively charged object isnk*2t9-omuaj g/ 8ohz placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral m*gon2 8au9ohk/mz jt -etallic 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 each ball?

  Charge is

  What are the units of the Coul:eo+vra in b.5omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg*s c j(:w ;d*hkn(dzbke is larger in magnitude than the (j kw ddb(s;kzn*c:h* second charge.

  Sphere A carries a net charge and sphere B is neutral. They are yx+yf)op 5 ;j(qk70z6j cgs-esk q:ogplaced near eackxoszq: ) y(7k0y je+pgj sc6q;fg o5-h other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa3 y wly,7bwk7jin force. If the charges on both objects areyl7,k3 bjw yw7 doubled with no change in separation, the force between them

  Two charges are separated by a distance d a)w(p xnm3xdq, nd exert mutual attractive forces of F on each other. If the(wnx,q3x p dm) charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a +:c8 pz u/xz x wa69pskf-coi8force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cente w s+k/8pp fccxxzz:aui6o9-8rs is reduced to one-fourth its original value? The force is now equal to

  An electron and a pro)jy ty(lw,5o3c i)xe lton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a seco3ylj)ol)txcwi y( ,5 end electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapv ev1 +,h 3uei5gnv/iopens to the magnitude of the force on the first electron if a second electron is placed next ni1/e 5, +vu3hveoivgto the proton?

  An electron and a proton are separated by a distance of 1.0 m. eld dq8 z1ed6 jw.6l,n What happens to the size of the force on the proton if the electron is moved 0.50 m c6wdq8e.ddn, jzle1l 6 loser to the proton?

  A point charge of +Q is placed at the center of a square. When a secofwt9xkj4ifg10la/qa 8 4 dmte3o l:g.nd 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 the 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 oa4aw0il 948d qmtg/3jf:tlgfk1x . epositive charge at the center of the square?

  A point charge of +Q is placed at the centroid ofoe5b *(mtgo(:4 :tmg dbq1ai n an equilateral triangle. When a second charge of +Q is placed at one of the tri:n1 (:* a(m4qoe b mtiggodbt5angle's vertices, an electrostatic force of 4.0 N acts on it. 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 nocvu.gys g)a72g7cp2ixl 9j7ft a vector?

  At twice the distance from a point charge, the strength of tk3m8xx1bj iryq:sf)fk -x2 m4he electric field

  Is it possible to have a zero electric field value between a neg-orad6 ; vmak8ative and positive charge along tr ;d6a-8vmak ohe line joining the two charges?

  Is it possible to have a zero electric field v5ef c3hbeb14 2jvbvtfx*eq ))alue between two positive charges along the line joinihe5c43 bjtf e)v )v1ef2 q*bxbng the two charges?

  Electric field lines near psitive point om6segheous0) 6 3w4e charges

  The electric field shown -uv1th,jd z +n

  Can electric field liikcz -nw)zb7q) 2pl ; 4i1zecynes intersect in free space?

  A solid block of metal in electro+ soujv(be84 zstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inte oevu sj4(bz+8rior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each e9,tpdbi1yu)am eh0-: dmbwyf ;e+:mgiven t-b e :my0ime dwa; utmdyp :b9+hf1e,)he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wowqbve ,6c xg;uxm/ br7k.,go3oden table in a region where a uniform electric field i;bkg/ 3 bw, evx, xc76qmorug.s directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chuh;-2.h o+a ufd6t8sr, (j1qvxi p+ xnql0zgw arge

  A positive point charge is enclosed in a holldfn e/h/*8 c8bt(l.x obt9fs mow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphfx*etc9. ob/s/fn8 (b8tld hm ere has

State three properties of conc9(by7i9vxpcjd97 r yductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrobbeuyp3 u*2 ip +s*fo6n is $e = -1.6 \times 10^{-19} \; C$. 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 mC. Hoagx10 6)v 6beytid:bu. b2dm cw many more protons than eleb6v )tcygmad.:0 i xb 1b6ue2dctrons does this piece of plastic have?

  What is the charge on 1 a qipmd.;l5j2 kg of protons?

  An atomic nucleus has a charge ak-7vrb r;k 9o7x2-og1x7fv c j2cv jmof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge values of 2.1bh r.7/x h 2xfhhvnr80 and -4.0 mC, respectively. What is the magnitude of the electric force be2hv hr1/bh8 f. xrxn7htween them?

  A 1.0-C charge is 15 m from a second charge, an y08p/;ngiceva/8o ryz:pm17su c *qpd the force between them is 1.0 N. What is the magnitude of the seco/pu1/c07:czi8*as8 ypgype n o mrv;qnd charge?

  Two 1.0-C charges have a force between them of 1,kvr3.an/npzso j g, 0.0 N. How far apart are they?

  The force between a c kv .97kxi*i ce*bg6s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initrt)g8h.d9;1fw fwx bz2)em t)i1if tmially 2.0 cm apart, experience a 1.0-N force. If they aret)9 1g zfix) et1r8bm);.hi mwfwf dt2 moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first::sno4d6rks b 1 7rnxq charge 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 direct o:k 71sbsd:q 6xn4nrrion of the electrostatic force which acts on the charge at the origin?

  Three point charges ac,) skg4otmg7o awjl40 mo ib: 4(ya2ure placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right alo4owacb , s7):j gykt g4(aumm0o2 i4t x = 50 cm, and +4.0 mC 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 located at the following positions: aq6(z . bbpm)zQ1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force(aqzmb. b)6 pz on the 3.00-mC charge?

  A point charge of +Q is p9wjml*l e 3*eklaced at the center of a square, and a second point charge 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 *l*9mej lwk 3eis 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); Q2 = -1.0 nC is at (0, 0.10 m); edci8vx.y,5kzli 4( f Q3 = 5.0 nC is at (xi.vck (4fl iezy8d5, 0, 0). What is the magnitude of the 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 = 5.0 nC is 398g7swa z+juea s7ls 5na is,;wrya6 at (0, 0). What is the direction of the net force on the 5.0 nC c nyasj 7ws3a+ g8 a,als6uz9ewsri57;harge?

  Three identical chargesz(ij7y, zg7 h nhbw-e7 xwa8f0 of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the e whf0zn,giza(x 7hy7-bw8je 7lectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whird kq1k z171pxch 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 su 1rq1pz7dx1 kkch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wherm5rwvj 54i1bu,8xe cde on the x-axis can a c4b xrmd5 5,vijwu 1e8third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherz+jnb;;dzs+ 2kj9jr be can a third positive charge +q be placed sr++j jd2n b;zbz9k js;o that the force on it is zero?

  A copper penny has a mass of((01qhdumzy l 3.0 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 againl7*(n tfcjg -sg x1;qist the force of gravity by the attraction of a fixed proton -j gg*1inl7fct (;sqx some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point j+ g yju,* b(jdkze+l6by nonconducting threads which are 30 cm long. Both are given ideug,lj 6jkbydezj *++( ntical 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 is the magnitude of th01cqhvvvdb w g9n k4ny/d* +3se electric fvn gvwn430d9s *b yk1 qv/dh+cield at a distance of 1.0 m from the nucleus?

  What are the magnitude and directiomy0di 5( ;m1uw-p(5ab qlqcdhn of the electric field at a distance of 1.50 m from a 50.0-nCm5duyip dch1q5 bl(0;(-maq w charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituu fg cs6e1e wm(3yy4p,de of the electric field at the location of thewuspg4c 6,e(ye mf31y test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th9 9jg rja-1egpe direction of the electric- j1rea9g9 gjp field?

  A 5.0-C charge is 10 m from a small test chargy;:wrd5:fjtk e. What is the magnitude of the force experiey f: r5kj:w;tdnced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a vb+cee (p ;z+ifalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chci+e b(fz+; pearges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stbwdgb)l2bq k:5 g zq0bq6(:mfick and a -4.0 mC charge is placed at thebwlq6)kqg:z0bqgb 5 m f 2:bd( 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCwxd sx3x/r7/bk*m )z 4.b bjsu charge is placed at the 50 cm mark. At what point on a line joining rbxw*)bk/x s3.4 /7bzmsduxjthe two charges is the electric field zero?

  Two point charges of ds f1q lns/ :7/jp*yog+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elfs y/p1*og7/ :dsql jnectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sqto)z5ze *s7+7qw5kdfkj( dt:2dr hysuare of side 0.50 m. The last corne do()td5s kh qtkzf+77w*5 erszd:2 jyr is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is*rzq)fxw4 n.y 1.0 m on a side. Charges 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 magyw* 4zq .n)fxrnitude of the electric field at the square's center?

  A force of 10 N acts on pr*kdt+lb+ 6f. (ekj pa charge of 5.0 mC when it is placed in a uniform electric field. Whkb jlper* + .k(f+pdt6at is the magnitude of this electric field?

  A particle with a charge of 4.0 m v,vmagi7:r5n4c x8u mC has a mass 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 0.120 g is p )o.wof7d(kz ml8jc ; b)i6ib-ubzor6 laced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it t6-. dfzbri o(i k8wb; cz67oj)l) moubo be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placd;ky0v31:c0 w2x/auq o gqlcj ed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fc3y0jx2 0 ; vckaqglwuqo1d/:ield?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magn/m l7+iuse:iwitudu: iw+l7s/emie of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm ca2i(sdsyw .s6 grries a charge of 3.0 mC. What is the electric field 6.0 cm f ss(6i dywg.2srom the center of the sphere?