05.20: A portable ra3svc x l2qf jh0o+fq:-z8sq(p p8sc t*dio that is playing is placed inside a screen cage as showl:qcvs2 (sfp80 js f3z * h+o-cqpxt8qn. When inside the cage the radio stops playing because

  94.21: Which of the following statements about solid conductors in ezyeb ;xqw .4*glectrostatics are truq*exy;4z. wgbe?
I. The electric field inside the conductor is always zero.
II. The electric potential inside the conductor is always zero.
III. Any net charge is on the surface.

  95.07: An isolated cnv/yn 3o 6mgf+m*idf(; j;bxw8 pyq2c onducting sphere of radius R has positive charge + Q. Which graph best depicts the electric potential as a function of r, tof;(v ;yfj +nm2x6cm gq8wi npbd3y/*he distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R has positive charge :52 ep jltm 33yk0qary+ Q. Which graph best depicts the electric field as a function of r, tk pt253ylma3 e:0yrjqhe distance from the center of the sphere?

  96.21: Two isolated c0a-kjn hfq 27u*-9nxz ud/mt wonducting spheres (S1 of radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conducting wire. Charge will flow i qa -d /70 n-ufx9zuwhnmt*k2jn the wire until:

  17.46 Two copper spheres X pl:,.kt08k m)beg mp land Y, with different radii ($R_x>R_y$) and equal excess charge +Q, are placed apart from each other. A scientist using insulating gloves connects the spheres with a copper wire. Which one of the following choices best describes what happens after the connection is made?

  03.43: The diagram shows twon3 d /+ed7w+ rvb4anb cs:l1kd identical positive charges located at points 4 and 6 on the positive x axis. Which of the following graphs n+b:adcvwk3/l 7s ne r4db1d+ best represent the electrical potential along the axis?

  03.50: A solid uncha7 gh3 3wm8bmzgrqu(.w rged conducting sphere has radius 3a contains a hollowed spherical region of radius 2a. A point charge +Q is placed at a position a distance a from the common center of the spheres. What is the magnitude of the electric fig3gq8m(m3 r.uwbh z7weld at the position r = 4a from the center of the spheres as marked in the figure by P?

  11.46: A hollow conducting spher usr4 pyd/py4p24:k sme in static equilibrium is isolated in deep space with a net excess charge +Q rp p4/usm2y:ky4p sd 4on it. What is the electric potential (assuming V(r → ∞) = 0 ) at the position labeled P shown in the interior of the figure? The sphere has radius R=3a and the point of interest is at a location r=2a from the center of the sphere at an angle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncharged condu d0 7k /x4l 3y./jo68au gjmezuxkle2qcting sphere of radius 3a contains a hollowed spherical region of radius a. A point charge +Q is placed at the common center of the spheres. Taking V = 0 as r → ∞ , the potential at position r uo x6q0jx/m . ld38 u4jyk/ek2aze 7gl=2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and rxvh*-.ec.pv outer radius 2a. At the center of the shell is located a point cha.*h perc. -vvxrge +Q. What must the excess charge of the shell be in order for the charge density on the inner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conducting shell has a net charge +Q placed on it. Which of g eo 3+)hv2zlfhho5qfv:9yrmwb90 7w the following is the correct relationship for the electric potential at the points labeled A, B, and C? Point A is at the center of the sphere, point B is at the surface of thq5 )9m9yh:vfwgvzobh l+o7eh2f 3rw0e shell, a distance R from point A, and point C is a distance R from point B outside the sphere. As r goes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +;ho+s xoqiia+:u 87ap bbh6/uQ and radius R. It is surrounded by a solid spherical shell with charge − Q, inner radius 2R, and outer radius 3R. Which of the following statements is true for the labeled points in the diagram? Assume these objects are isolated in space and that the electric potential is zero as the distanc 7ph ibuu a/ a6ish;:obo+q+8xe from the spheres approaches infinity. Point A is at the center of the inner sphere, Point B is located atr= R + δ, Point D islocated atr =3R+ δand Point C is located at r =2R − δwhere δ is an infinitesimal amount and all distances are from the center of the inner sphere.

  15.48: Two concentric charged conducting shells ai8 l:epidoz8x3 10t n4wepn(wre in free space. The outer shell hasnn:pzwwpidex8i1348 (elo 0t inner radius 2a and outer radius 3a. The inner shell has radius a. It is known that the electric potential at $r=3a$ is $V_{3a}=\frac{kQ}{3a}$ . If the electric potential $V_a$ at $r=a$ is 0 volts, what is the charge on the inner spherical shell
$Q_in$?

  14.35: There are several statements dqxs6.q5r1y ri1* d/pg qbg4ypresented below that attempt to describe physical phenomena. Which one qr 56pq1rbg qsy4./dyi *dx1gof the following statements is correct?