State the law of conservation of electric cg-d++twa l,ld harge.

  Is it possible for two negative charges to attract .zyzkk e,9 1 7mer(c -ftrv6i3hdrne1each other?

  Is it possible for a positive an7hi;h1ghj8nuuv.ou+f ji*q) 1c-go y d a negative charge to attract each other?

  A glass rod is rubbed*sss 8ut.koozp s-t b3k- g/b; with a piece of silk. During the process the glass rod acquireoszp 3;s/ukot.-kb st-* 8s bgs a positive charge and the silk

  A proton carries a

  The model of the atom s;prsp l2mv p 6+5jpsu9x ,ko1chows a

  A neutral atom always,f8+-;ch9 yw iegp lbm has

  An atom has more electrons thai:q4 p xm:co0in protons. The atom is

  Materials in which the electrons are .xs2n-w ok+ habound very tightly to the nuclei are referred to aswo+h-2ak s.n x

  Materials in which the electrons are / ya1 m2o8+ztg i7e47hfd ccyybound very loosely to the nuclei and can move about o1t7a/2i+emczy g4yf 87 cdyh freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal ba5-ff )ks rb,kpi+wm;1 sbhu;b.vj:eu r. The end of the metal ba-ik.f+ f s5b,p v1 urkm:we)hbj;; busr farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They uqd,;cikvw0fq 0bl 08are placedkfuid wv c0b80,;lq0q near 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 electroscope positiv 3gob38iswn c3ely?

  An originally neutral sy i(c8+on :)q. z2i (unws.idf3jx vlelectroscope is briefly touched with a positively charged glass rod. The electroscyliuq.+ s(n32insjdc x zov):.f i8w(ope

  An originally neutral electroscope is grounded briefly while a positively chargj-h0aw: 8xeyg)f +y rzed glass rod is held near it. After the glass rod is removed, the hy-g)fa+ry8x ezj0: w electroscope

  A positive object touches a neutral electroscope, and the p c5mu+lj2on8*u: 4 ;1hsns dzjz)etbleaves separate. Then a:nj5tzs1dm euo+ *4ul;bp z c)hs2jn8 negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated a zd84b5lbtc-h*b 79ridqx 7; nw0pcdtable. A neutral metallic ball rolls straight toward the object, dlq;ac0thp rib8z* dxn7b459-7cdwb 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 each ball?

  Charge is

  What are the units of thes t49z:tlaz+(v: gpywt2 4;xyff x:uj Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T;wy z;)af0bs . ) t5n rsyi9-juqqkxss,q8kr :he first charge is larger in magnitude than the set)b:;z 8xsy;ns5y0r ak.r ssqfqiqj-9w ,uk)cond charge.

  Sphere A carries a net chargebb/wx(c:;i8kv . unbc and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the e/wv (;bbk:cib8x unc. lectrostatic force between them?

  Two charged objects aml l5i2(2q vi/efz a:bttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the f:z2a/m5 lbli (ie2qvforce between them

  Two charges are separated by a distance d and exert mutual attractive forceselaez1q7qnh ,pf iv6m q 7;7m* of F on each other. If the charges are separated by a distance of d/3, whanfqviq1767p* ze,7;mqh elmat are the new mutual forces?

  Two charged objects attract each other with a force F. What happ;f6 o0rqffc6 gy8e; faens to the force between them if one charge is doubled, the other charge is tripled, and the se6 ffq;y;gefra6c80ofparation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton an9 rbil/m 9ynu;;-xw1 +d ayyare separated by a distance of 1.0 m. What happens to the magd;a u/xbmny;w-yy+ 1 ln99r ainitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance ota ;3y p:pf/4 f8 vkq,ne8dsecf 1.0 m. What happens to the magnitude of the force onfyc;nap/48ds v:pfkete q,38 the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepa938t 9+ y9on 9ipy u4lgtkyg3kmekg4v rated by a distance of 1.0 m. What happens to the size of the force on the proton if thy9 39og+3kp n 9gelti9tvg yu8yk4m4ke electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poizu2h l rz8 xfpo0++w ,i(j7csrnt 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 zcurzpl++xihr 8s,j w7 of0 2(the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed a9lx7- ,w/vwblg b umt0t 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 it. What is the magnitude oft guw x7b0blv-m/w, 9l 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 followin)sb1v6hs i xz7bwri 48g is not a vector?

  At twice the distance frn 4b/rnajsukx0 u86 f;om a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and y o . uz88lb hk1,isee*yif;y.positive charge along the line joining the two charg yuis,8 .h*f z81ik. ley;beoyes?

  Is it possible to have a zeroj udu(te,z6 /y electric field value between two positive charges along the line z6utd(y,j/e u joining the two charges?

  Electric field lines near psitfstgo m w ilnt+p3,1(6ive point charges

  The electric field shown /q-xpcc-lv fh 31c/b2e d , )tottac4t

  Can electric field lines intersec 9+d:k1pe-z,c r*dy)uvq lf vqt in free space?

  A solid block of metal in electrostatic equilibrium is kp k7o*far+fu qw6n-3placed in a uniform electric field. Give a statement concerning the electric fi-7*nurw f po+qk3a6fkeld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each lpngv+,yjb7 .given the same charge, the electric field (E) midway between the center and th+p y .lgb7v,jne surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifo/o5 p 455r kmnhu)gpc5y 3zwsav:6fcg dd(o q-rm electric field is directed straight upward. What can be said concerning the charge on the block's du5gf-pmcgo asy3q)cov56nk/z:55(4 hdw r ptop surface?

  If a conductor is in electrostatic equilibrium near an electric chargipy:k)u95j sqe

  A positive point charge is enclosed in a hollow metallic spherz;z sa8d0ht 2ro3n hb;d+dwx4e that is grounded. As cor8dw+ z;athszd2h b0;o x4d3nmpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriums)( wzrs+rql 0.

State Gauss's law.

  The charge carried by z +qskzj5 i9xzhi:83he-qd.r one 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 a net charge 153qon c7eds*dqnxddp 9 y8:kof +2.00 mC. How many more protons than electrons does this piece x951knd:psdc3d *d7yen qo8qof plastic have?

  What is the charge on 1 kg ovy 0vv(rfwu*w *9zuy0ty aj 8(f protons?

  An atomic nucleus has agy rrs41ejl7 0 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 ci+yue 0nvwm2il dq7e,,kz*: am, have charge values of 2.0 and -4.0 mC, respectively. Whavl,euz +7di0 2w ai,kyn:m*e qt is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0o z: z-(kqcqdvrk*+cixhm /7; N. What is the magnitude of the second/r hzoq*d;zxkimq v7ck: (+c- charge?

  Two 1.0-C charges have a fly6 o//ld tfk)orce between them of 1.0 N. How far apart are they?

  The force between a 04noo,rq:qql 3xz9 xz$30 \; mC$ 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 1.0-N force. If they jb-6h1sv 5bzl,mz+5 o ;fqkoo are moved to a new separation of 8.0 cm, what is the electbjqfk oo1z-mh s 55+v l,o;6zbric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first*bk6 s1zum v vb+h;pii7os.a, 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 o ,+p1iz *67 buivv b.sm;askhand direction of the electrostatic force which acts on the charge at the origin?

  Three point charges a vng)0v/(xtmlp o0a)ure placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rightp0)nt/ mx loau v(v)g0 at 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 ,6+ws3/xsme)w.meazg4 4 8l okrxwr c positions: Q1 = 2.00 mC at x = 1.ow,/+3 se)c gmxks8rrle.x amzw 44w600 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 charge?

  A point charge of +Q is placed at the center of a square, an wy8n0uuu7c4vi12 wpb d 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 u8uu cyiw4p 7wv1 b02nat 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 = 5.0 nCi9cpa* x0x i-m is at (0, 0). What is the magnitude of the net force oc aim 0*xi9-xpn the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 cyl-iw-: z8 uwm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force-wu8-:cyi zw l on the 5.0 nC charge?

  Three identical charges of 5en:w5;l 6 mjxmrr.he 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is th5jhe: 6;rml ern.wxm5e magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whicwz.sn ,xot(o; mf8 fn2h 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 su8o n zxn(, 2f.wt;smfoch 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. Where ob.-ik qk wpx,*qb( d.fn the x-axis can a third charge be placq*w- pd,x .kb. fi(kqbed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where canpczm +q7lz +8tvm o1b( a third pos zt1vpqz+c7om+b l8( mitive charge +q be placed so that the force on it is zero?

  A copper penny has a mau8ew+j1n(ecjo 38g z po a.wz+ss of 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+6.a2gjglzpd)*yve ld.b 3exz9 fj3z force of gravity by the attraction of a fixed proton some distance above it. How fjgz 3vzg x*.e3l)9d6y jefda l.zp2b +ar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thredj7 7s) spr;teads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thp ;jetss7 7)dre 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 ma0b77pmt evz4y68 qzfs :(xegxgnitude of the electric fielzq7mz4(yve7x6bs8f xtp g0: ed at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dist6jr pq6x v0;iy1,azcr ance of 1.50 m from a 50.0-nC chargeq c;yir x 6pj0a6rzv1,?

  A 5.0-C charge is 10 m from a small tesff,+ty oev r:+ltdw jp(a52 a+t charge. What is the magnitude of the elecpart2 jd:t ovf (,y+e5l+ +fwatric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is jskc35;ky ,1cus5j rm the direction of the e yj,jr1; ku53kscscm5lectric field?

  A 5.0-C charge is 10 m from a smah+ dzb:qe n3s2ll test charge. What is the magnitude of the fo:endhs3b qz2+ rce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a val6bzz i23 :mdiyue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between:iid 2zb63yzm the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick av49jnv()1wm)flb c a qnd a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm )) m(v4q9flnwa1 cvjb mark?

  A 5.0-mC charge is placed at the 0 cm mark oi, ct+ujn b;r5f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. +jb;5n i,rc utAt what point on a line 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 x = 0.20 m. Wh pt,ez,z-g xd(wm d+)uat is the magnitude of the electric field at the point mutx)z ,de g ,wz(dm+-pidway between them?

  Three 3.0 mC charges are at the three corners of a square of svgh*4okxen l o/5.ff 4ide 0.50 m. The last corner is occupied by a -3.0 mC chargo x4gl.n5o f/4vfkhe*e. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Char1wg knhk ebw.(+++o1y cyzpn ;ges 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 magnitude of the electric+; +1 hkpn(+go1eynzbwc.y wk field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pl)njp54zapha * aced in a uniform electric field. What is the magnitude of this ele)pj4np5*a z hactric field?

  A particle with a charge of 4.0 mC ha:kg+l ywf3ok+s 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 placed in an electric faz -sx0yx mx53ield of 6000 N/C pointing downward. What charge must be placed on the ball fzx axx-yms305 or it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bpkr-d-p/gjom( 08:u0st sxve all is placed inside a tk0gxm0/ep:(d s o8j-v-rpusuniform electric 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. Whab15bc: sj(qp-iks ) rwt is the magnitude of the electric field 5.0 cm from the sphere) icb-srqsj: p1 5(bwk's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha e43 / a5 nkiww5;rurdwe0itf1t is the electric field 6.0 cm from the center ofi1at/0f;wnk 4riewr w 5e3 d5u the sphere?