05.20: A portable radio that is playing is placed inside a scr (*2m 8o9 bp3zuroykmceen cage as shown. When inside the cage the radio stops playing becauk9p3 ozou cr8 mybm2*(se

  94.21: Which of the following statementi he 2k (h7-61otaskkps about solid conductors in electrostatics ah(s e -h ip176oktk2kare true?
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 conducting sphere of radius R has positive doh:b3wh (u4m* rh5rlcharge + Q. Which graph best depicts the electric potential as a function of r, the distance from the co dh5* rwh(h34b:l umrenter of the sphere?

  96.36: An isolated conducting sphere of radius R has positive charge9-e8*de() pan1qajd j*zk- s qzp9o ag + Q. Which graph best depicts the electric fiel* z9)-j(pq doga pja e-8ka9*eqnsz1 dd as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and inexwxp1o4a 4d-tc r sh5pk3p;.0 jsqu9itial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a54had 1q;39 kxjpe -w rxctsp4u.op0s conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with dikw ep7c4(f:fa wbx 7bi:*zljo-df8r 1fferent 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 two identical positive charges located at plwg4hc* act i6dc3+2eohe*2 moints 4 and 6 on the positive x axis. Which of the following graphma h26e+cle to*w2* cch4gi3ds best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has r; rxu d9k i3n lzn6;x9h0ict6sadius 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 field at the position r = 4a from the center of the spheres as markezktn 99x3 n i6;;udcxh0ri s6ld in the figure by P?

  11.46: A hollow conducting sphere in static equilio m9ao73:x-7xmz jklb brium is isolated in deep space with a net excess charge +Q on it. What is t x boamoz k7l3jm79-x:he 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 conducting sphere of radius 3a contains y6cczjwzdm- yg9v / ;xmf,kbbik, 5 95a hollowed spheric 6c;w by/ czg k,k9zdymx55i-jfb9 ,mval 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 =2 a from the center of the spheres is:

  04.50: A solid spherical conductin n*w -ap,penw a-bvzbu-(2gsm-lp3 r5g shell has inner radius a and outer radius 2a. At-wvppseubaw(-z-grb3m- 5ann ,p*2 l the center of the shell is located a point charge +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 shk(;+w eyo(9ne y zwcz9ell has a net charge +Q placed on it. Which of 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, point9ew(yk c ( e+yoz;nw9z B is at the surface of the 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 cond:l66pe2wa4q o c;pbujuctor has charge +Q 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 spa:bj4cqpou2 aew6 6lp; ce and that the electric potential is zero as the distance 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 are irg/ 0 /ta)giksn free space. The outer shell has inner radius 2a and outer radius 3a. 0ig)/rt/k sag 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 presented beli-c p*3izzf w0ow that attempt to describe physical phenomena. Which one of the 0 i-c wzi*p3fzfollowing statements is correct?