State the law of conservation of electric yg i0 3khg4o2mcharge.

  Is it possible for two z+jhy f0y)i.tqk 5p -znegative charges to attract each other?

  Is it possible for a positive ; 8xhfdb -)rzzdz-l, pand a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proces bye7g).zq5gk s the glass rod acquires a positive charge az5kqey.7)g g bnd the silk

  A proton carries a

  The model of the atom s:c .qox*,3 l vgklxr/lhows a

  A neutral atom always haetv7lq ;w5a a(s

  An atom has more electrons t o.o( nit4i.dehan protons. The atom is

  Materials in which the electrons are b89jvuxrn6z7v5fs5 yr l +t ;ibound very tightly to the nuclei are referred t n byr8vjil;+65x5vzfr7 u ts9o as

  Materials in which the electr.+pdn vr2/uvzons are bound very loosely to the nuclei and can move about freely withinzndu+ v2/rv. p the material are referred to as

  A negatively charged rod ia j *p-qn0,xgko)y0 kts brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charg*-n aypqk )0x kj,o0gted rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. zdu1tnf pbc b 8jrw,k :bz3 d1au+f,3 bkbn0/7They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statementn:u0zb/uf3nz7r ,k8bd dkp 1t,ab bjw+fc b31 is correct?

  How can a negatively charged rod chazcfi d9/kf.l.ek3,rt5w lj 1trge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively cha1h:wg./i vf qwrged gliw/q v:hw.g f1ass rod. The electroscope

  An originally neutral electroscope is grounded briefly while.e-y8v 38 0 mtqsz,m7 llmyprvv+.( yie)rmgt a positively charged glass pmqvzryym 7)slvytm rlv.( - 8.8,i03 et+mg erod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. r -a1lno9th2 z Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?29n oth-z1 lra

  A large negatively charged object is placed on an inriq.z;g6. tkcij et*x:/j1y msulated 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 6.x gcyj;tj*m:i.1qezir k t/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 Coulomb9b ix .+: mpf*1yrm/rptv u,wd constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distutl ;d6,tpax +ance d. The first charge is larger in magnitude than the 6u dx+t; t,aplsecond charge.

  Sphere A carries a n96v ttzduks -5et charge and sphere B is neutral. They are placed near each other on an insulated tku9 -vttd z5s6able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the char5+oqg98nyyuh15 y**v rqr c wpges on both objects are doubled with no change in separation, the force betweenwy5v+cunhy*8q *o g9rpq1 5y r them

  Two charges are separated by a distance d a5vrlyf dtqs:l tc(1,s ck v,0lsg/;4ind exert mutual attractive forces of F on each other. If the charges are separated by a distanc0 q(vl/ri,c1y;sg4ltc5f,d k:sts vl e of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wh m 3c5j7s)woxqat happens to the force between them if one charge is doubled, the other charge is tripled, and th)m5 oxs wj7cq3e 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. cp8elt-6 ,rn;e-qp. pc mbv+w What happens to the magnitude of the force on the proton ifw pc.n-6pmert vpq-b8,;ec +l a second electron is placed next to the first electron?

  An electron and a proton are separated by a distancey h a 62fzv hfdmuz4 g-8./ptehsy h4qc8a/;2g of 1.0 m. What happens to the t; aavh4huhy ff.8yp- sgeqc86d/m4gz 2z/2hmagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sm.n2(u uo(yhwc.s n-deparated by a distance of 1.0 m. What happens to the size of the force on the prnd u.sn-h(o wy2c.(muoton if the 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 poi x0o03 lb b.pz8xxzvm.nt charge of -Q is placed at one of the .mbbx80 z.xovpxz3l 0square'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 positive charge at the center of the square?

  A point charge of +Q is p+muz u)2 6v71 gsnkubblaced at the centroid of an equilateral triangle. When abmsk ngu17 vzb+)2uu6 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 of +Q placed at one of the other vertices?

  Which of the following is noan wxmgh t0rq.g52h,xv m2q 76t a vector?

  At twice the distance from a point charge, the st pzbz(v8h77--+x9ejcpser6n f bj n4jrength of the electric field

  Is it possible to have a zer:e9bczwa 7;z /nm 5pp*iuk pxf7qzi*2o electric field value between a negative and positive charge5xa 7/; z9f2p7*zibpmc * kpn:qeiwu z along the line joining the two charges?

  Is it possible to have a zero electric v(t:sp krzu 3 /nsa6i0field value between two positive charges along t6n0zs stiarv/ukp (:3he line joining the two charges?

  Electric field lines near psitive+udc-eutg*d ( point charges

  The electric field showq0lxmg9-0cis+p ; zc yn

  Can electric field lines intersect in free spacnky x:o)f:o xzox m:*9h3 lua-e?

  A solid block of metal in g9 hwn9utv 5t/nr ai6r ipvt;83njf:+electrostatic equilibrium is placed in a uniform electric field. Give a stat9 rahtnr jw6 3n5ntgi +:v9/f8i;up vtement concerning the electric field in the block's interior.

  If a solid metal sphere and a h+o*h,msjroap*e.y,ypngl g-a7 3 5 flollow metal sphere of equal diameters are each given the slf+ ,ol*- .hne,g7a mjo5*y yagrps3pame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum 7qdnedic3 * j 1aqw7 (hh1-ur)mxd9wmrests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blocm xhw*1d3(q)nd1mi-aje dq7c 9u hr7 wk's top surface?

  If a conductor is in electbz :h+y zfy9b9t+dlv/ga s-+m rostatic equilibrium near an electric charge

  A positive point charge is enclo1 jk .*n:/8cvq fatluvsed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly ac u8v*/ 1nqft.a:jlv kbove the hollow sphere has

State three properties of cotc j 57tlu )9.x+s :rakn2qnqhn -a4xznductors in static equilibrium.

State Gauss's law.

  The charge carried by one electr;dz :xq:a: ib:fhco m7on 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 of +2.00 mC. 9 2 au h6u +umj4/wcotyuc+j-u How many more protons than electrons does this piece of plastic htw+6ma/+c9 4 uuu2 youj -ucjhave?

  What is the charge o) vzv6oz 3hjx2n 1 kg of protons?

  An atomic nucleus has a j-a0+.m mm msdq*vz;ypf0p4t1vwnqr s3p g 25 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1ggd/.n489u3uzk vnvb md28 sh.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What 8d.4vbuh ds98vn ugz/mn 3g2k is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force b3e f y9l u0fd jn*:x9ytiv;6mvpaj8b9etween them is 1.0 N. What is the maji6 0py;yljf bt:39vxum d v9fn *e8a9gnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0gr.gb; 7fhfu+* -c2, ungjen f N. How far apart are they?

  The force between a d6m 211.tka ;1p dvrvzo2 wevx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experientj4) kxbo1.dfce a 1.0-N force. If they are moved to at d kbofx.)1j4 new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fiinq a5lzjrmz/:)2id x7,c: kxrst 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/ 2imza :jz:d)lnx,qix k5c7r of the electrostatic force which acts on the charge at the origin?

  Three point charges ar5t ved*q t(p6ee placed 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, e 65tqtp(d*ev 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 positions bug:qrsnyw2eub:)6e(l8l,e : 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 be( lwgqusrneyu :,8: b)2e6l the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squt1q -ij,v)w maare, 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 acts on the center charge if a third charge of -Q is placed at thetaqim )1j-, vw lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC istnx(i2fnku6 3 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of2x( tni36 unfk 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 nC i;7l 8d8mqzec(zdnv7w/g : k rqs at (0, 0). What is the direction of the net force on the 5.d(8q8zn7m: crkl wqge7 ;vz/d0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ*f0 i (rs)dlamw4rz t7ilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic f r7 0*dzwftl(mi)r sa4orce which acts on any one of the charges?

  Consider point charges of fw7df*v(+c ( ec: eoi.xv-k nj+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would wv7enock+*(xe-c v ffd i(j:.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 charg - rsc31j,ifuiu4b,wn3jca i.e is at x = 4.0 m. Where on the biwc i rj -,fcuajusn ,4.13i3x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q iu j b -j6c./3qfl09rhu-ecji is placed at x = 2a. Where can a third positive charge +q be pl9-u rceuif-ij0j.b 3/c6 hj qlaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g ykh(/i7 .uonk. 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 force of gtw5x7mzmx) ymb+2m b nfb670iravity by the attraction of a fixed proton somey 0 n+)bit x zmmw6m277mbfx5b distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphet.ikv 1 k8 r2kr5grl 89bhwm2bres are hung from a common point by nonconducting threads which are 30 cm lot5bh98 rk m gwl2.kk ir2br1v8ng. Both 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 a charge of +40e. What is the magnitude of the elr v3w cru9e22*d dq9sd,rr ou ik6ln*6ectric field at a distance of 1.0 m uk9 dsw6ru,rdrre 3 q2c9lnd2 6i *ov*from the nucleus?

  What are the magnitude and direction of the electric fo3k n+uwp/po pkh(r 0*ield at a distance of 1.50 m from a 50.0-nwurpnp/oo03k*hkp +( C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o c*d1zxa ruzul2f)6v uzo79i 5f the electric field at the lovlxzzf)ao 571 9 * c2uud6ziurcation of the test charge?

  A 5.0-C charge is 10 m from a small testweo8; cf1 ae0m charge. What is the direction of the electric fiele m1; w8ocfea0d?

  A 5.0-C charge is 10 m from a small test charge+2s dk lngk a53aj-b(b. What is the magnitude of the forcsdkg ak5bj2 -n3 ab+(le experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3txg s 9 b60y lcv*3oyrw(lqw.)d1pjb( .0 C and are separated by a distance of 4.0 m. What is the electtvgy1lp(yo6drq*w9)bs3b x(w c.0 ljric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ;of.v4 rg,e5 sqa3lwa +yn-vaof a meter stick and a -4.0 mC charge is place, 4.as5qf vea-ol y;+ agn3vwrd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed-d tl ok.mml+)qo 1os+nez a/ 9ka-o.r at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charg r+delo+19anlk-otmz)-s m.k oq . ao/es is the electric field zero?

  Two point charges of +3.0 mC and -7. gk:l qos/f./l0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elelo:qkl. g/ s/fctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of 4 7lhpqposhads p 3l+9h8)qrp(zjwht) w( )i :a square of side 0.50 m. The last corne4(hiaq) 7p)lzwo + tp8w9 s j:3pq)rpdh (lhshr 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 on a side. Charges are placed at the cornereu3;rxr;oadap tg, c7gez,4;;6imf w s 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 f tgi7f;,c;6 ;z a3eg,u dm ;prorex4awield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is p9fbd dt2cql6+pv z0d*laced in a uniform electric field. What is the magnitude of th*2d f9tcpzq6 ldv b+d0is electric field?

  A particle with a charge of 4. ;:hadipfa/9 p7 pcdb10 mC 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 0.120 g +(uz+, svam sk/l9spois placed in an electric field of 6000 N/C pointing downward. What ch kspsva(s+zm+l,o 9/uarge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC/m:xcambhi ;4. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction oc;4xa:mh mb/if the electric field?

  A metal sphere of radi 4*hz ae 6wu,) vw dxd;,s:j4;yprnm(zgbt6b bus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from then;r;*e6xw z,gzb4bda ds) b4 y,p:m(6vuthjw sphere's surface?

  A metal sphere of radius 2.0 cm carries a charg/gbx9:o bgj5 ke of 3.0 mC. What is the electric field 6.0 cm from the cengbg:5 9kxo /jbter of the sphere?