State the law of conservation of electric e 65abwp6 fx8ct5n-du/l.vcj 9l9kygcharge.

  Is it possible for two negative charges to attrc+ ngjbqb*z::/t 8o5pnwlh ww233 vjsact each other?

  Is it possible for a positive and a negative(arm glr )/vs/ charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proca a 8d-gm0ijl+ess the glass rod ac+ dj-aia 08mlgquires a positive charge and the silk

  A proton carries a

  The model of the atom showsgr2rm( g grl8p/ yz7:t a

  A neutral atom always h 0xziomx+ xoj.y5u h2rz9cr-p 9r:uw,as

  An atom has more electrons / vk wbabr5sm+bs d6p6v*ug.*than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuc:xk 0p fr3jys0m0 nsdb.8wgn wi/.)oslei are referred to 3 drwss/.nymijnw0p0)obf k:x0s. g8 as

  Materials in which the electrons .5bpzo1zoneh2)jygq7 bko rx;0t)2 eare bound very loosely to the nuclei and can move abop.1xt;z) ekjgbhr o b0qo )z2 72ynoe5ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal7b jst8tvadm8ue*48b bar. The end of the metal bar farthesttsbj8t48 dv7be mu8* a from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pe; 5/ euu w5 s1z7(b5kczkulkjlaced5ee 5ukksu517b ;zu kzj/cw(l 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 z0ude201kubs electroscope positively?

  An originally neutral electroscope is:/q ojvc2nczx11nz h- briefly touched with a positively charged glass rod. The env1hxzcc2: qn1z o- j/lectroscope

  An originally neutral electros(8f)v x2k diptcope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elect)82viptd kxf(roscope

  A positive object touches agv*) q.kp.j bn neutral electroscope, and the leaves separate. Then a negative object np)q* .jv.kgb is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plax j6k5ur iwuz (c28j9eced on an insulated table. A neutral metallic ball rolls straight t2xw 8uuez6 9r5cjj (kioward 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)66phznw3c bj the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are se jtiuybo85e7:n 6nuo2*jr uy( parated by a distance d. The first charge is larger in magnitude than the second y y*5uitjoo6b(8j enru2n7 u :charge.

  Sphere A carries a net charge and sphere lf,2 d;yvuj7+ tvo,j/row3dp B is neutral. They are placed near each other on an insulated table. Which statement best describes the ele dt vjylr j/d;wo2,+3 vpuof7,ctrostatic force between them?

  Two charged objects attract eent+dd/i8u7/ def 1nj dni):y(bq k/vach other with a certain force. If the charges on both objects ii dd y/) 1 +8dnu q(befjnv/ke/t:d7nare doubled with no change in separation, the force between them

  Two charges are separated by a distan-l.se6k nl2 avo ut.,pt+b6 ince d and exert mutual attractive forces of F on each other. If the charges are separated by a distance op2s,l6n -nbtivt +o e..uk al6f d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whai3jas0;) pgi8imyolxg0s94 h; 1i i sst 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 v4h9 a 3liiigi1y8j)mos 0 s;0sg sxip;alue? The force is now equal to

  An electron and a proton are separated by a distance of 1 (ro1 ut,td/ 1rsu9 bfff-q-eudg:jo :.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ed oqbsud:-tf 9e(trf gou:r,j1 1 fu/-lectron?

  An electron and a proton are separated by a distance of 1.0 m. What eap, vc4v3g9z happens to the magnitude of the force on the first electron if a s 3a ,v9zce4pvgecond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m9i 5nyxs8(;0nxh nqsun9my 6p. What happens to the size of the force on the proton if the electron i p snxy6 yun8(;nx5mi9sq9n0h s moved 0.50 m closer to the proton?

  A point charge of +Q is placed at t-x7fr mtrff1 0fil: a/he center of a square. When a second point charge of -Q is placed at one of the square's corner1:f-l mif/aftr7x0 frs, 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of a*/pyjqtb wje5 z 9s9rr: 7u-dkn 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 the force that acts on the center charge due to a third charge*wzerk7b qpryt-/ju 99d : 5js of +Q placed at one of the other vertices?

  Which of the following is not a ve7t 1g.p 5hmsz3 vx zdhz28lfmh e2g/,ector?

  At twice the distance from a point charge, the strength of the electric fi :d+ r0c2htnekeld

  Is it possible to have a zero electric field value between a n9adbitplnsm- + 55ul) egative and positive charge al) pl95b-udsn5tam il+ ong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive cha ms*6zyrk* q;9.ccdu irges a.yri ;*6su*c qk9mzcd long the line joining the two charges?

  Electric field lines near psitive poinht;+0:no t 6pwe0obqcey ,tm59auk6r t charges

  The electric field sho szrp- 2,4vggtwn

  Can electric field lines intersectafb 2x;a8a6k8 zhy6 eo in free space?

  A solid block of metal in electrostatic equilibrium is placed in a wpi o:(a3 n7kq:d6qov uniform electric field. Give a statement conko q(6ovnaiw 3::pd q7cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow maz gw:al9tjoew36bb -2w et --etal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the sura w3al wz2te 96-bj-e-:tb ogwface is

  A cubic block of aluminum rests on a wooden table in a region whcytckc :m.e*z b4 /t2fere a uniform electric field is directed stramyb .:e 4/cf*2tctzk cight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic e ,;u0 l5:yyi qlf x5(2ckrcgmzquilibrium near an electric charge

  A positive point charge is enclosed in a hollock0i)+nog ,pva) 58lap(yjfl w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direi+nfyl(a) 0va) 5p jo8pcklg ,ctly above the hollow sphere has

State three properties of conz4weh /jobi)8 l fp3,zductors in static equilibrium.

State Gauss's law.

  The charge carried by one9;llc rn-7e bo ogouo:: 0lq1l 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 v8rjsfmlvl3 9x76r d8 of +2.00 mC. How many more protons than electrons does this piece of plastic8vvjr638ms 9dxlr7fl have?

  What is the charge on 1 kg 6qjxt 1stkjni8yabn (m-,.;h of protons?

  An atomic nucleus has a charge2wv k2ph k8lr; 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 c:9t e4vx k4s5isq wim1harge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force4i94q5xk st mesw :1vi between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw y .ogb:jn2pr+-bb ,lg l)k;lqeen them is 1.0 N. What is the magnn)+gq bk :ollb-,yl b.prgj;2itude of the second charge?

  Two 1.0-C charges havd6;jez fn fq3u)o23twe a force between them of 1.0 N. How far apart are they?

  The force between a vq9ud1y28ralpo2)( oft+jh s $30 \; mC$ 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 a,t9+vni qn4q r/8luwho66h4mtze l 5 force. If they are wvz64ho5t9lhea,8u+nl i6m/4 r nq qtmoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges o 5u6 h7szneo7tf 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 mark. What are the magnitude and direction of the electrostatic force which acts on the charge n6 5zs7hteo u7at the origin?

  Three point charges are placed on the x-axis. A .6gm gqb1kft3charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, a.6gmt3q g bkf1nd +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 posaryq;k5 5vhu1zs y8t -itions: Q1 = 2.00 mC at x = 1.058;yauqy 15zrhsvtk- 0 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 sqg6 wrr;;a amw+j2(faieq/1 reuare, 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 th2;wwiqrr faa6(m 1er/+eg; j ae 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 nfxe70f 9qa/ ivw l08cipx(xyqw/ kq1s1t p:+vC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th 1 ys0fw/pltv /:xxexv(+ aiq cwk7qfi8091pq e 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 n bo+ult6 oo,on-itk1z6mfc6g397l heC is at (0, 0). What is the direction of tbuhcfl1mz,3i 6 ogoe-+k nt66t o9 l7ohe net force on the 5.0 nC charge?

  Three identical charges oil/zf4jsgma.l 00vk u60rl m; f 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a sjv ;as0rm 0z06imllgl.u / kf4ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At),rfscia9 q31sz*jd bgy) r.m what point, on a line between the two charges, would it be possible to place a charge of -Q f,sid 3 9bcyzsr)arm.g)1q *jsuch 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 ig hcuydibt( *3wc l0:/s at x = 4.0 m. Where on the x-axis can a third charge be pw 3hd:gycucl 0(i b*t/laced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xysp b0 xm7sm,chd+9s)p h:-w5a;shy p = 2a. Where can a third po hy)map095s b sh ,ss-+h;wd7 p:mxypcsitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. +q,(rhtza2f4n sql f4A 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 force of gravity by the at)2g o:s 33ibpxt )u,hxirf0 qe91s krdtraction of a fixed proton some distance above it. How far above the eleu ) fgsiq92ibx,ep )odh31 rsxkr: t03ctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wc2)*mi x.kboc2mfd5rln:t 7 thich are 30 cm long. Both are given identical chat2)ncoci* 7 .2ft5bdk rlm:xm rges, 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 +*js8xq+ vk u*)zv/ bpmvsrf ;n2/ qkknh9,jzis the magnitude of the electric field a k2 k*puv9 /*rv,qx)z+s ;j vb nk+szn/mq8fhjt a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fir(kt8ilo c(1h kb,jy mb27:oleld at a distance of 1.50 m from a 50.0- mojk y2trobk(h ,1( :cl7l8binC charge?

  A 5.0-C charge is 10 m from a small test chargemchn*7tovi no(9/4e s . What is the magnitude of the electric field at the location of the test chnvtneim4 o(s7 o9*/c harge?

  A 5.0-C charge is 10 b8;oeh smz2/v qi 8 k28ludsq-qxb:3 cm from a small test charge. What is the direction of the electric 8s/ qo ; mk8:8zqb3-e2qdh2lbvc ui sxfield?

  A 5.0-C charge is 10 m from a small test ci pb*8l6jf-dh na4n u*harge. What is the magnitude of the force experienced by a 1.0 nC ch -4idnh**a b u6p8fjnlarge placed at the location of the test charge?

  Two point charges each have a value of 3wb7klziqj+vs-awo 0s*t 31 0u.0 C and are separated by a distance of 4.0 m. What is the electric fibuisq*70 -takoj0 +w 3zvlsw1 eld at a point midway between the two charges?

  A 5.0-mC charge is placed at tj wimk,a(-ywkq .wvo )y:-8bwhe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fwy)ob8mi:wqkj (-a kyv .w -,wield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark /l7ck zgm s8ks+q6(ws of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a li/6glqskzkwc7+ ms ( 8sne 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 = 0.2u3 sq pjocx)..0 m. What is the magnitudc)xousq. 3.pje 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. h-f.na2gf / ;b cwky*c The last corner is occupied by a -3.0 mC b/h 2cyf;aw k -fng*c.charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m o hrd0 /lp85abj 6z1xk (-cy36kqqtsgpn 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 d1ba6 -jqz 65k3cp (gklpsxtr0q/h8 ymagnitude 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 uniform electrh lf+pf 8s)w4lic fh)lsp4+lfw 8field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ha/ yzky4s.k v+rs 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 field of 6000 N/C pqaz h,mjr),*9b gho 4 vqj.*apointing downward. What charge must be placedj 9qmzah)*a,g bjrv .h*p, oq4 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedx n1jn,zsdm k r0(nu36 inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude ann6mzu(1d, 3kn 0sxnj rd direction of the electric field?

  A metal sphere of radius 10 cm carries a chnv) *:g1mf95 rverhvmm:(2ocu uks,karge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thevkvs ro9kmce2f :m1g nu5v rm (*),hu: sphere's surface?

  A metal sphere of radius 2.0 cm carries aa;ir0w5utoi+ctt6ab;s i 58nrm:mb+ charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphern0:+itcm5 w5 ;ui a 8r irot6bst;b+mae?