State the law of conservation of electric aeobc2ee1(q01fum , zcharge.

  Is it possible for two negative charges to attract each other? 9hq pc*t)aweq ehn.kn/: piy69rez9p88+ flr

  Is it possible for a posx uy)hb:mp, mev/ kc)4itive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tcpn1 vdx 1)u-she glass rod acquires a positive charge and the-cn)p1u 1 vsdx silk

  A proton carries a

  The model of the atom shows actrh y 8l6qu(3d,kq8b

  A neutral atom always has/pw, jv8 h )kiqefoa27

  An atom has more eleo dvv1 i8-vu** )odfmhctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the n/kjwkiyt- u7 /1q ux9auclei are referred jixtwk/-q/ ka97y1 uuto as

  Materials in which the electrons are bound very loosely to thxng832knw/t xe nuclei and can move about ftxwgx 8kn/ 32nreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged met )ofh2lxzox7t4 ue.8e al bar. The end of the metal bar farthest)ex. oz lx4to2hf8u7e from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere4kmct ,;abd3 (go*sy*m)y nvl 3mb)io B is neutral. They are placed near each other on ao** ymmb3)n(ctm, iy skogdv43)abl;n 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 electroscope positiv ig*sm7t3 klg;ely?

  An originally neutral electroscope is briefly touched wqsbt b8j(ga);.m6k scith a positively charged glass rod. The electrosco sq t;)ck.a6mbj8( bsgpe

  An originally neutral electroscope is grounded briefly while a pos ,(ww /rthl.qtsj etar24i+ e,itively charged glass rod is i, je,(tsa2.wl/th eq +4rtrwheld near it. After the glass rod is removed, the electroscope

  A positive object touche..nnovp1; :x dqrnu z+s a neutral electroscope, and the leaves separate. Then anoz xp:q;nd .r1n+ .vu negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placedq.q,wc dxxk0l6 6gbw- on 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 objectx6gwxlq6.-bkcd,q w0 . What is the final charge on each ball?

  Charge is

  What are the units of the Couce q xjv-n*kutj h,g8/9ey60 alomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chag0gwvce)yo)(ln5v r1 n)un d-rge is larger in magny g(wvc-l)gn d v5)ne0u)1 ornitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral.7+ rpk0+rddas t. zg:m They are placed near each other on an insulated table. Which statemksg zatp+ 0:+ rrddm7.ent best describes the electrostatic force between them?

  Two charged objects attract each other with urzen y6g*/w1 a certain force. If the charges on both objects are doubled with no change in separation, the 6r* 1yewgz/un force between them

  Two charges are separated by a distance d and exert mutual attractive forcaulmey xn09* v 8jd;.fes of F on each other. If the charges are separated by a distance of d/3, what 0;9a*uyxv8jl f. ednmare the new mutual forces?

  Two charged objects attract 0qqvkf-kx,7k d v*72 aysgon3each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centersqkyoq72* n xv0k ,k-sd v3fga7 is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distf9 dzt1i.+sbvw8o mjtn)5r p(ance of 1.0 m. What happens to the magnitude of the force on thtw+ 1 pf v(5) bzmdtsnri.9o8je proton if a second electron is placed next to the first electron?

  An electron and a proton0q4 v5 xv33go uqzbfzgt.w wn8;l,1 co are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placzz 3u,3w84 n;q bg5.towvcgolvf x1q0ed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whao9+0 gjoq je cv* rm;)l:lzpb6t happens to the size of the force on the proton if the electrmj0po q+; jcv 6obr)l9z:*lgeon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Wqh (kmttuu38:hen 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 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 positiveuhk 8( 3:mtqtu charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triang 8t exsch:jln*/s1h 0f)5fvht7sbo t y/ld4*gle. When a second charge of +Q is placed at one of the triangle's v:ttv0s h ghtdnec*f/ *fh ly)xs/1745o ls8b jertices, 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 not a vmp+09r*hv oxyxpgy* uhc78)tector?

  At twice the distance from a point charge, the strength of the eleh to xfvf)86uha .fvij:. t(a+ctric field

  Is it possible to have a zero electric field value between a negative and6eq h ou0q;-qwsy+ u1l positive charge along the line joi6w-0 qqysql1u +euoh;ning the two charges?

  Is it possible to have a zero electric field value between two b) sodsgeg9.. positive charges along the line9bg) dsoeg.s. joining the two charges?

  Electric field lines 2zp)cd- qxar 4()xn )v0cmwip 99ufe pnear psitive point charges

  The electric field show80itr 1suskpdvf0l - (n

  Can electric field lines interse gfxh-j .pby-8ct in free space?

  A solid block of metal in electrostatic equilibrium 7 naxe79,ohwkis placed in a uniform electric field. Give a statemenh7n9ak owe,x7t concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ay c m4szo;,i(each given the same charge, the electric field (E) mid m;4ao is(c,yzway between the center and the surface is

  A cubic block of aluminum rests on a wov-ttcu/)qv - woden table in a region where a uniform electric field is directed straight upward. What can be q- v c/)vwt-tusaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electj; 4ehkf ob/f./s8rksric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundev0hpup3ytzow5- *5x w d. As compared to the case without the hollow sphere, the electric field at a5 0vhupotwp3yx*w-5 z point directly above the hollow sphere has

State three properties of conductors in g3sk:i n/ :zvljmaz67 static equilibrium.

State Gauss's law.

  The charge carried by :a6b5(ok mja+j.m/zne fs r7oone electron 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 l)4g il:rq5qoa net charge of +2.00 mC. How many more protons than electrons does this piece o:gqoq5r 4 l)ilf plastic have?

  What is the charge on 1 kg of proto8lf gemi) 7iyp+;w7 kz k3ji1zns?

  An atomic nucleus has a charge o/j n8hm :zogwnr.jpjgxzyq0:. ; 3bg,f $+40e$. 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 2.0 andfj0+ qjry buj5i+ bm(gj*4i c2 -4.0 mC, respectively. What is the g+byjjfbr ( ju5+q*mic420ij magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw;;ijdh;s lut5 een them is 1.0 N. What is the magnitude of thejs diu;ht5l ;; second charge?

  Two 1.0-C charges have a force between them o o2qfre6n9e: x1m6nt df 1.0 N. How far apart are they?

  The force between a f.ripj mx8/ndo fe+lz /0r1(l $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i43nn-:miy yewfi:)wnw 8*cysem*m 9 qnitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, wimns fc:mwwiwq9) ey*y 4ye:*n-m8n3 hat is the electric force between them?

  Three identical point charges tjz;zy7b/ 3cc of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm m7jcby;zt 3zc/ark. 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 charge oy -/:m,y ssmy(kvbv f;ru:( zyf +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the bmy/rzyku( ,y;s:v:msyf -v( electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x gv 2xax9wb: c7= 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 on the 3.00-mC chargex gv7bxwc: 29a?

  A point charge of +Q is placed at the center of a square, and ptn(9-sbjha x,0ub7ka 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 thtnk0-as h ,7upj(bb9xe 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); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5;oe 5 hnptbtoqhx8xm64)7jo pp).x,m 7t4qeq.0 nC is at (0, 0). What is the magnitude of the net force m5 t,7ohxt .p468pqxm)oxe) n4b;pjq 7 ehqtoon the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10t3t2-y7y;zwmj vb bspv04( y; *uzw j fxwx5e4 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fo4;y-w(2sz bvj0jvx f zte*y75 w3 um;y wtbxp4rce on the 5.0 nC charge?

  Three identical charges of 3.0 mC arev)oit1j.6jpz+) n tdt placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magni tj+ zt1nt).)ijdpov 6tude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separars-cf 9de b+h)q 0dy5mted 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 f h+qms)9yd-f cdbre05orce acting on it would be zero?

  A +3.0-C charge is at the orji7 t2.mrsv 3zigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirs m2jtz7ir.v3 d charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plache f3/ckv+ a3/ioe 5tced at x = 2a. Where can a third positive charge +q be pl kit3c+evh/5 3feo /caaced so that the force on it is zero?

  A copper penny has a mass o91rhxa ,4, debhfof8bf 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 against the forf u8o*7re u *novav-i2ce of gravity by the attraction of a fixed proton some distance above it. How far above the electron ie 8aonr2* -u* 7vovuifs the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threg0 f)vob2) kizads which are 30 cm long. Botvf z)2bokig )0h are given identical 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 2*n q))ft rpfft tn;/aa charge of +40e. What is the magnitude of the electric fi 2*f/tnfqat) ;fpr )nteld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fie- xqyzk: hw2*vld at a distance of 1.50 m from a 50.0-nC charghq zkxv:y*w2 -e?

  A 5.0-C charge is 10 m from a (+c7w 1zpf lygsl9 hrel-z,d7 small test charge. What is the magnitude of the electric field at the location of tefgz(c+l1r-pd w hyz, 97 ls7lhe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the +db*3hpbhan 5electric banpdhh*b 35 +field?

  A 5.0-C charge is 10 m ftu ,0ro13 ttmw .gof9 ;htmbv4rom a small test charge. What is the magnitude of the force experienced by a 1.0 nC chatogv ;,mr3mw9 0h14u.tto bf trge placed at the location of the test charge?

  Two point charges each rgoqx3/fg*7v9rqa hz *,2rpu *j8zvahave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at axrjugrrzq7z8a 3,*/h o2g *fpvqav9* point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 lg( l cs.rg.d2mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar gl..ls 2dgc(rk?

  A 5.0-mC charge is placed at the 0 cm markk6lgr;24s:sq2 0 cmzz v;f brv of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiningskmzlv;bg:;fcsr q4 602rv z2 the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7of 4ojs v3( dom.*2meabqq-x*.0 mC are placed at x = 0 and x = 0.20 m. What is the magn3 bm* -qs2mo fv*oxeqdo.(a4j itude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.rb4+llf+(llgbn/sj/ g(6ed a (myj t050 m. The last corner is occupied by a -3.0 mC charge. b /ya+/tl(ggbn e40fm+rdl6(jl j(sl Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ae3(p-hpqtq8x*g9k z k t the corners of the square as folxgk e-3zthppk (98qq*lows: +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 magnitude 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 unifor f1s bv1fdeo7 k/qhz09m electric field. What is thqfzsb/ o1fv7hk9ed01 e magnitude of this electric field?

  A particle with a charge of 4.0 mC has a3zl/o;m2fmkq 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 plackhg)e8 x w,u(3ks5g v,kk8 fcded in an electric field of 6000 N/C pointing downward. What charge must be placed onx,w ek) vuk(k58h,ggkdcf3 s8 the ball for it to be suspended?

  A foam ball of mass 0.150 g carries:b) ) cedn2hws a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric f))c sbwndhe:2ield?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.q u:c:r.by .edj1myx 4 What is the magnitude o:1y..mdx eb:qr4cjy u f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 m;-4dytup c8 1cftb: jptdt4;wC. What is the electric field 6.0 cm from the center of:84ttpcdjd-;1t p4uyb; w ctf the sphere?