05.20: A portable radio that is playiny;:m zo k,2sulg is placed inside a screen cage as shown. When inside the os:zk ,ulm 2;ycage the radio stops playing because

  94.21: Which of the following statements about solid conductors in6gwm-yig2m oo2z: 195iihpd c electrostatics are true?m9c6ihg:dm i2-o512iw z oygp
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 p+nl l9 pm kacyq7s7 kluc7os, yz3)92mositive charge + Q. Which graph best depicts the electric pot+7z)up2 m kc yl s99qnlykoa7s7cl3, mential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R has p.8uh y2 9qdyhmositive charge + Q. Which graph best depicts the electric field as a function of r, the distance from the center of the spherem9 2hh.uyd8 qy?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and initiaj0tks7e;1i hg gn5 gbh(fj.* xl 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 in the wire ungfxe s* ht51nk g ih(;jj7g.0btil:

  17.46 Two copper spheres X and Y, with diffee,-5 oky-iv 3qgi yi/crent 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 jmu. z;)whuuf os3-n6+ jv* qipoints 4 and 6 on the positive x axis. Which of the following graphs best represent the electrical psqi-hz)*.muunj 6ovw ;+fju 3otential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a containsn jw02tnc *hd: a hollowed spherical region of radius 2a. A point charge +Q is placed at a po:*2w htjc0nd nsition 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 marked in the figure by P?

  11.46: A hollow conducting sphere in static equ5 w65lgx*:m gjvv gp0zilibrium is isolated in deep space with a net excess charge +Q on 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 a wz 5vg6 g*j:50lmpvgxngle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncha,ziub;z2st5g/x j ,y crged conducting 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. ;ctyz,jx2,i sbz5ug/ Taking V = 0 as r → ∞ , the potential at position r =2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and outer k)p . tyf6d)i7yg p2abradius 2a. At 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 gtpa6)kf .iy 2)bdp7y inner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conducting shell has a0rj;as b.4,wdb*ljl 8i2 b mqf 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, point B is at the surface of the shell, a distance R from point A, and point C is a distance R from point.*jl 0jari; ,b2qw48b dlsf mb B outside the sphere. As r goes to infinity, V = 0.

  07.42: A solid spherical conda :9ku.9yqqg / uyv*bductor 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 space and that the electric potential is zero as theqk9da /ug* qyu b.v:y9 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 chaqu1n +d8 3imc7oo8sgurged conducting shells are in free space. The outer shell has inner ro 78ugucm 1+3oid snq8adius 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 presented below that attempt to describe pt zq6q9 m82 sdn6lnt7ohysical phenomena. Which one of the follom7nt9q n6lt82sdqzo6 wing statements is correct?