State the law of conserva99s7;x w-khv 4fvcr-,*bkkzq v8ayx otion of electric charge.

  Is it possible for two negative cvd wbi v/;r:jfdg4extcu+(;av4: i, tharges to attract each other?

  Is it possible for a positive and a negative charge to attracpc b8a01w9sgqt each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a;)rw,k0vu j ;mxw4coqcquires a positive charge and thej,uovcq ;wrx0) 4 ;mwk silk

  A proton carries a

  The model of the atom shows alm*+ ybb8 zj sqz(kqry,/uxh4002nao

  A neutral atom always)t7jb( h8nqa)5lfjgu has

  An atom has more electrons than protons.ic pp8e(xj y13rfx 5qg9m 3zk: The atom is

  Materials in which the electens;s( s(wlu 3s 27mysrons are bound very tightly to the nuclei are referred to ; ss(2(us3 nsemw7ylsas

  Materials in which the electroz)yej :qgh/ygs)we*2ns are bound very loosely to the nuclei and can move about freely within the material are re*ewyg )hzyg s)e:q2/ jferred to as

  A negatively charged rod isr jj)niw(uxh+c93 yu/ brought near one end of an uncharged metal bar. The end of the metal bau ycunxj)/hw93(rj+ir farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and soi1g fnxd kw,ia* :*-ux7 y9zgphere B is neutral. They are placed near each other on an insulatgiai1*,- g9 uw odx:ny xfz7k*ed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrn x/hgy6e*u bjx8 )t0xoscope positively?

  An originally neutral electroscope is briefly touched with a positively charwk yy shvf((3pabw ,*-ged glass rod. The ele 3,fsbaw y(-hpwv(* kyctroscope

  An originally neutral 1x ec/9r85zzsntn2nu electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the el/ur ze 8xn 59tcsznn21ectroscope

  A positive object touches a n0. qal hkyzlo1p2vg)1 eutral electroscope, and the leaves separate. Then a negative object is brought near the ele1ov )z2a l phylg.10qkctroscope, but does not touch it. What happens to the leaves?

  A large negatively charged n;vw-;qa/c ee object is placed 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 v/-nqw;ace e;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 t 5ac:nyp.v4.s a/z1tz8jrnmdn7ou: g*q8u zuhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fm qf(s8/ anf)pirst charge is larger in magnitude than the san(m/s8f p)fq econd charge.

  Sphere A carries a net charuz4r(0zph n )bbkw7*m vch9j j-e a8(cge and sphere B is neutral. They are placed near each other on an insulated table. Which statement bes7-h0r(uc9jmhezabwk *c8 j 4v) nz(bpt describes the electrostatic force between them?

  Two charged objects attract each other wicfn(b2iaa0,blrxz 4/ th a certain force. If the charges on both objects are doubled with,0ilaa2(f cxbn4bzr/ no change in separation, the force between them

  Two charges are separated by a distanixkk2; h7ae/riv8q 7 kce d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forceskeiq axk/v28 ;7kihr 7?

  Two charged objects a: a as;gpjfmc+w51ufhq40o-bttract each other with a force F. What happens to the force between them5sp;ch:uw4fao bj-1 0 fmqag+ if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happ 1(b.ti0 ykf4ict *pfgens to the magnitude of the force on the proton if a second ( ygbkf t fic40*1pt.ielectron is placed next to the first electron?

  An electron and a proton w7qq 0t 5(eoaqare separated by a distance of 1.0 m. What happens to the magnitude of the force on eoq5a7qw qt( 0the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatzgdhmay9+kc f ox +s429(;vrced by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is movedm 29(zc;vcx4o+ 9r+ afsykdgh 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. u3+9sp*g kzn .g4 q jwl/(deta When a second point charge of -Q is placed at one of the square's corners, it /3 pe(k.+u9jgadsnzt*4lwq gis 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroucc 14yzp9 ;ibxar7q9id 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 of thu za c1rpqxi9b7c;4y9e 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 af ; y;,:lgrse+yqgnw ( 1wci2l vector?

  At twice the distance from a point charge, the strength of the elecspv azq07y h3:n+/ skrtric field

  Is it possible to have a zero electric field value betw +bbz +x-gebe3een a negative and positive chargbz3b-+x +e ebge along the line joining the two charges?

  Is it possible to have03cp2en t pw(a a zero electric field value between two positive charges along the line joining the two charges pw cp30enta(2?

  Electric field lines near psitive poin52h a5 y vcxzixav+s,9t charges

  The electric field sd7d -mk s-u.v5qxak2t hown

  Can electric field lines inteihx)*, 2lg ohdrsect in free space?

  A solid block of metal in electrostatic equip7i / vqh+isk-;kth:u)zd qg 3librium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiorgzu -;i)kh3iqh:tsdkv7p /q+ .

  If a solid metal sphere and a hollow metal sphez5*ujw 46sn epe 7:xapre of equal diameters are each given the same chaupn eza p5e7s:x *w46jrge, the electric field (E) midway between the center and the surface is

  A cubic block of alu0:g78kcw6uzf2-gk rod )ha3och2ajbminum rests on a wooden table in a region where a uniform elckgrz 32-fbh2 w da8j:c)a7g60uohokectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic 4k :y;fne,z rqequilibrium near an electric charge

  A positive point charge is 4c;/o4; tettiju* zghd3jyp6/3 kubjenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollowzjto36 *y3b;iuhgke; d pj//tj 4c4tu sphere, the electric field at a point directly above the hollow sphere has

State three properti+jxzwa*7x b0q+bh :xn es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electlq ,1e5fwgm*tron 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 cah wz,lpng75 2pk/ 44jlm rf+yharge of +2.00 mC. How many more protons than electrons does this piece of plastic ha2l754 agzl4 phjf y,n pkmwr/+ve?

  What is the charge on 1 d;z bx) wfxjt 4nxy6)1kg of protons?

  An atomic nucleus has a char.xib*)( j dmr9urm. twge 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 cm, have char+7lzd+)xkdh df 13gsn ge values of 2.0 and -4.0 mC, respectively. +dd)s3gh7lx n 1fk d+zWhat 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 1.0 No3ylvpohp r w8o 1++/i. What is the ma io+ yow1v3/olrh8+ ppgnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the(tozify 1)od 4y?

  The force between a r .dym7br6r, to3i5mo$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencbmnyjv , c(2x;e a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the e2 m;xbyv j(n,clectric force between them?

  Three identical point charges of 2.0 mC*(avlydz j x9fj-ar6l 4ygs )/ are placed on the x-axis. The first charge is at the origin, the second to the right at x = 5jz4f lvaxj/l6a9s)y (d- yrg*0 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 plawjw +vn46- lxc/e qc4dced on the x-axis. A charge 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 thw d/ql +xv4jc-4w e6nce 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 pos h2nk/9ak k(jbitions: Q1 = 2.00 mC at x = 1.00 m; Q2a kb2kh k9/(jn = 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, a rqz3s.g-g 3xii(gy 7ind a second point charge of -Q is placed at the upper-left corner. It is observed that an elecgygi7-i3r (.ix z 3qgstrostatic 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); Q2 = -1.0 n. )cc1i)5 b,)ekfh qytie9a cvC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net cq.ce 9e v1fyk))h t) iib5ca,force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)1ckplkz) dd .0; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ofd.kk)pz10 ldc the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of 9rh*y6-hmi s7/ av2n-o w6diwv-fhws an equilateral triangle which - ww6sih/ra-9h svown hi7*vy6f d2m-measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges 2-g 9;:l,pzhir g xisoof +Q and +4Q, which are separated by 3.0 m. At what point, on a line bexi2;iglp, :ghs zr -o9tween 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 4+t8p64d 4qg nr oyk5d9rpbsicharge is at x = 4.0 m. Where on the x-anyr 4gbt k6ro5 ppd sidq9484+xis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the otwkcj56e9 4m nrigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed6e54cmktwn j 9 so that the force on it is zero?

  A copper penny has a mass of 3.0 g.y8)g7ljr;ni 7zqj zd7 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 uq1c2ceqq x m-(p against the force of gravity by the attraction of a fixed proton s-2qx em cq1(cqome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commog: ux. mocy;la zkgic3/4.e db6 5oru.n point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them a /4kdo.5.3lr cz6ea ;o u:uigbc g.ymxpart 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 the ih5 - zun)-/5skk(7 fkjm1hdmzsm4a relectric field at a distance of 1.0 m 5sm(mh4zfk/a r-z-75 1d hikk)umj snfrom the nucleus?

  What are the magnitude and direction of the e lw/*u,i0dbte q g;e0ywc (/ptlectric field at a distance of 1.50 wbuqtdye*i,t0/lp0;/wg ce(m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small dji8aq e r5 jly**mvkh9 h1s:7test charge. What is the magnitude of the e*h7rjm58 i9jq l dakhysv*e 1:lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test czqmy6o8mo3s (jhl t3h-oqq/ 3harge. What is the direction of the electric(sl3 j/o8moth ho-mz3q qy3q6 field?

  A 5.0-C charge is 10 m from a small test charge. What iiuf2kv6 foc/- s the magnitude of the force eif6cvuk- of/ 2xperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C a ix1d;;ri::xj 2kzabsnd are separated by a distance of 4.0 m. What is the eli2ix:s;:1j;k d r bazxectric field at a 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 mCh fhe. t o/dvx+(h:s:dzx/k+e charge is placed at the 50 cm mark. What is /z.:ex:t x/(hk+ehho +dsfdvthe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickgm :;( b9:8:htjres2syzwdq h and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the qt92h b:zdj(sygh;r: 8:sw me 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. W :p*x 3jnu dkb+q nk5xtqa*2bl+z6p7zhaqbxn7a:kz 2t+u6 zp*nbd5x3 p k*+qjlt is the magnitude 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 0.50 m. Then-7 3zfgni oz0 last corner7 -zn03gno zfi is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m oncwa .1axus/,b 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); a1su,.wba/cx +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 aypzfs s )r*6g/ charge of 5.0 mC when it is placed in a uniform electric fiesz/ 6fr)g*sp yld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has 8pqy 6f8ys6prie 6fbmts/z*1f k .;rfa 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 field of 6000 N/C poiny6 0asl20h 0p(fe jtlhxi8rt -ting downward. What charg0 xl8l0 h f(epsj-2ha0y6 rttie must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g .xs:0ho cj bd8carries 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 magnit 8c:s0ox.d bjhude and direction of the electric field?

  A metal sphere of radius 10 cm carr +obk)8zm b:kmies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm frm mk) +zob:bk8om the sphere's surface?

  A metal sphere of radius 2.0 cm carries a c+vs cni ,xzd-16 5bccqharge of 3.0 mC. What is the electric field 6.0 cm from the center of- q 5di x6z1snc,bcv+c the sphere?