State the law of conservaiux 9-ifp,l*p 8uoyw fqri,vq0n( : :ation of electric charge.

  Is it possible for two negative charges to lkejmr v*cl r;82 f00tattract each other?

  Is it possible for a ponnjt2ou sutr)7 ; 4k3nsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glas )4m dq6wm/vays rod acquires a positive c)vdy/mq a4 wm6harge and the silk

  A proton carries a

  The model of the atom shows ,)miv*5juw;nq 7 qaiza

  A neutral atom always .igqq rl1dk4 r9,kd+bhas

  An atom has more ele8 xxcj,1 g wgoo4(z/zmctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to tra ,;am7tgf xg0 lu+;jlbbq es55 +p3she nuclei are referred tr5+j g0b+,5 m3e7uxlap;t a;f sbqgs lo as

  Materials in which the electrons are bound vem.m g1zy e:l-wouh a5(xcs7r)ry loosely to the nuclei and can move about freely within the mahs:1 m5ug- )ac( ylm r.owxze7terial are referred to as

  A negatively charged rod is brought near one end of q*.l-dv ek7,qcinp oz::0kfy an uncharged metal bar. The end o7 qlke*-0yf:vpdi, :cnk. zq of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. iw(sxr f r6s j*7.,asjThey are placed near each other on an insulated table. Sphere B isr( ,6s*rjxs j.af i7ws briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop ; fkkbxwex(1h p-3ps)e positively?

  An originally neutral electroscope is briefly toucheo24y3dd08pvo,sdo cxn 72k k fd with a positively charged glass rod. The elekk doxn3 s cdv,7poy24 80o2fdctroscope

  An originally neutral electroscope is grounded briefly while a positively chs ljw46ai9 e)h79nsbharged glass rod is held n9)i76wh sel9sj 4n abhear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thljjr-qbb3/-c q6 ee0wen a negative object is brought near the electroscop3jcl0-bebqe -6j/rwq e, but does not touch it. What happens to the leaves?

  A large negatively charged * h:yj9xcbws j41 muh,:f 3ybxobject is placed on an insulated table. A neutral metallic ball rolls straight hw, j* fy4jy::muhx19xbb3cstoward 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 each ball?

  Charge is

  What are the units of the kq40c* a * :gndxzl5alCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects aroe t(.4ou9syr(ei8yp qc-f 9sqqi(d3e separated by a distance d. The first charge is larger in magnitudey(q- 3 9 (4(8fr9uiq.seodeycqtospi than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near 3rjsn9tgrhmw o+y75- each other on an insul9nrsyt7-h g+orm w3 5jated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract(;j+h mrt-gaf each other with a certain force. If the charges on both objects are doubled with no change in+mrgth; a f(j- separation, the force between them

  Two charges are separated by a distance d ymmhq:ry m1llwf7w (y-:33pzand exert mutual attractive forces of F on each other. If the charges are separated by zmw y:hl:q1yywp3 7m (rl 3f-ma distance of d/3, what are the new mutual forces?

  Two charged objects attract w,tp(p/c,f.vf j6 smaeach 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 centers is reduced to one-fourth its original valut favj,w.,fspp/ (m c6e? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hnwcw aa/jhcf-26 u/2happens to the magnitude of the force on the proton if a second e hna2cwha-/u jwc/6f2lectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0doxbz /2/v )ju m. What happens to the magnitude of the force on the first electron if a second electron is2 jz)vdx/bou/ placed next to the proton?

  An electron and a proton are sepaku,0el*4bagm) rrh 3v:2 yx5 za 1dkclrated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to th: 3uvk2)klm5rhr0ea,d ly* z gax1b4ce proton?

  A point charge of +Q is placed at the center of. 6tum*hvox a7 a square. 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 the positive charge at the square's center. Now, identical charges of -Q are placed at t*omu6xv7hat . he 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 +Q is placed at the centroid of an equilateral triyrt* dj5la/*skw hn7)angle. 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 of the force that acts on the center charge due to a thil/krt* n hj s7*5yda)wrd charge of +Q placed at one of the other vertices?

  Which of the following)uuont*6 8e hd is not a vector?

  At twice the distanc .xyhe(5m kr5ce from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a 0lwhv/nkk 8 tax v5-o3negative and positive charge along the lin5ovlw /vhk 8ak3 xt-n0e joining the two charges?

  Is it possible to have a zero electric field value be2moxoxtz(w6l-*gd 4 htween two positive charges along the line joining tzhmd xgx(tl24*- owo6he two charges?

  Electric field lines near psitive pointsdl:jms +1 (vz3 ,y/buxno uje -n0uh6 charges

  The electric field she gb64n).3m6 , bp4cnqokprwtown

  Can electric field lines intersect ep o2u :. gmig:ck(y7uin free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniw rly1ux)(ro4form electric field. Gw1uyrlo4 rx()ive a statement concerning the electric field in the block's interior.

  If a solid metal sphere a+ocgh.5 ;xt k0;luftgnd a hollow metal sphere of equal diameters are each given the same charge, the electc0 .t;5 toh fglk+gx;uric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif0mu1a7 jl vhnv)3vp aztt,ub:97bk4u orm electric fie7nzbmu:vlt , k v p)b43uvha79j0ua1tld is 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 electy hwxfz*;r3hchfl4p eh7, 6/ nric charge

  A positive point charge is enclosed in a hollow m+l5s-*w8u*.xv todz l4scbo retallic sphere that is grounded. As compared to the case witt84usdo-.+lz srvc*owl5 x *bhout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors 9a;y*ovighz p *(k-dm,j zl4q in static equilibrium.

State Gauss's law.

  The charge carried by one electron i6 h24buc+e7ag9je k gws $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a 9 740xjx ez aamz7tut1net charge of +2.00 mC. How many more protons than electrons does this piee aj19mxta7 t xz470zuce of plastic have?

  What is the charge on 1 kg of protonu bkc3os0s0pbb2p 72zs?

  An atomic nucleus has a /bfqjz *;d ;om6wx,hhcharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated b; .jwh.rvd 6 ioabs26)+7 xi/req wgkby 1.5 cm, have charge values of 2.0 and -4.0 mC, resejxhk.r7ivaw. g bbo q/2+6;d )6 siwrpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the 1qd 7q 5lh8iqeforce between them is 1.0 N. What is the magnitude of the second char87d1qqhi5qle ge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a(q0(ab q/n woldw+qm29bhq)npart are they?

  The force between a 0h;m6wz u9e tlj/z+ th$30 \; mC$ 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 ur4rh,t 9ih4am2a8xz they are moved to a new separation of 8.0 cm, whatax9,ur4hta8zr hm42 i is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thewu,x x-oyj+6oy nkz(wc1 j/ his0bq,: 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 mark. What are the magnitude and direction of the electrostatic foru,coj +,nsxw6wzb 0qi oykj-xy1:(/hce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chjxu q4d xjgw1x.3d)8sarge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, usdg13xwxjx q .8j) d4and +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 pfks gtw4z-m,p0o6t; dsf(7l 53zyqlrositions: Q1 = 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 on the 3.00-mC charg5qs tz0zl;rt4-g6f op,w(dlm73kfy s e?

  A point charge of +Q is placed at the centozp8.u* h k dl5h f.ip.zu:;gjer 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 is the magnitude of the force that ajul8 dz.5pi. zphf*; kgo.:uhcts 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 nC i(u1:qkqfrj; ,jse ;b bs at (0, 0). What is the magnitude of the net force on the 5.0 nC chark;uqjj1s f :,b(bre;q ge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (u:rcgn* fchtr,r5(c. 0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh*nuc.rc ct5rg hr (:,fat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCh q9kaw*)l 3fq are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which act f)q wakh9q*l3s on any one of the charges?

  Consider point charges of +Q and +4Q, which are se, vtw9)x2kizhux qg ,,parated by 3.0 m. At what point2xw,kz),,u x hgiqt v9, 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 would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 c/ eqp9odb5o3 m. Where on the x-axis can a third char9 /qo c5obepd3ge be placed so the net force on it is zero?

  Charge +2q is placed at the objoe2 ru6s)ki 8tsq()rigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on itejk sri( 6) bsoqt8u2) is zero?

  A copper penny has a hgye(1ls(s 51w k taa j7o+i* tkvpr.s,g4p,nmass 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 th: zv ag1jm. *;tdj1bgwe force of gravity by the attraction of a fixed proton some dis t.g*a;b:w1 zgvmj1jdtance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads w wt+ph -tjy /p5.s6hophich are 30 cm long. Both are given identical charges, - p hw/+pt5 ht6yosj.pand 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 a)yhwnv 1z 7; jhioi7:+40e. What is the magnitude of the electric field at a distance of 1.0h7n yi;1ai v w7zhjo:) m from the nucleus?

  What are the magnitude and direction of the electric f2.ifzr s fv+v)ield at a distance of 1.50 m from a 50.0-n).z+fvf2 sriv C charge?

  A 5.0-C charge is 10 m from a sm ;+h/2j 7iuygcs;c rlnall test charge. What is the magnitude of the electric field at the location of the tesuc7li ng j/;r2h;yc+st charge?

  A 5.0-C charge is 10 m from a small te9n 1c/,znv wwviv7.eegw 5 p(rst charge. What is the direction of the elge 57w ne vvi/rw9.cn1wz ,v(pectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituemilrncu;/ : ;de of the force experienced by a 1.0 nC charge placed at the location of i; m:eucln /r;the test charge?

  Two point charges each have a value of 3.0 C and are separps*ss1(hy qv e5)f+ 0+clmalcated by a distance of 4.0 m. What is the electric field at a point midway between the two c0 )+ay s f(vqc*l5 eslhc1psm+harges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chgf+- ,kv374 qnn5c skwvub/a aarge is pl45nvku/a+g-7knbs ,wf3avqcaced at the 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 -13 i;ro be rkgl9z8a93 p;nxuu4.0 mC charge is placed at the 50 cm mark. At what point on a li3be 91u ;i k3orgxza;9 runl8pne 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. W15a p/0i1vti2 hkiyrkhat is the magn hipt1k0y215rkv iia/ itude of the electric field at the point midway between them?

  Three 3.0 mC charges are at th,t:0*meybw/i5uc za3c0vc qq e three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field q/tc ac z*:5wqy0 b3,eu 0mcivat the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placeb / bc(.ra*vvcd 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 field at the svbbcvc /a*r.(quare's center?

  A force of 10 N acts on a charge of 5.0 mC whe dxei 87ta1fx6k wk5b:n it is placed in a uniform electric field. What is the magnitude of this w5kdx1i6b: 8 7kefaxt electric field?

  A particle with a charge of 4.0 mC *(juej v.wfl7v3xhq/ v0nog+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 0.12 n91vmn3nk,gk3cn 1g r0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be3 ,nv3 9 k1n1grmkgncn suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed :,8nj +duj/tzhjiaa0inside a uniform electric fiej:jazd/n8au+ h, 0jit ld, 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. Wha aox .mfam1.g8uk/ 53 bb+rjkut is the magnitude of the electric field 5.0 cm from the sphera5+u1.jk a8.fo b3/ kg mmubxre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 (m:m5 llw(gnq mC. What is the electric fiel mw5 nq:l(gl(md 6.0 cm from the center of the sphere?