05.20: A portable radv k*83ililu pbi3n9bd) ;k)drio that is playing is placed inside a screen cage as shown. When inside the cage the ra8k)dbn 9b3iri3d v u*)ki ;plldio stops playing because

  94.21: Which of the following statements about solid conductors in 9 s7m,rzuf h m:2xm/6nesj)tjelectrostatics are t,zs6 ues2)9f:xmn7jjmr/mh 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 spher3/m zdkau1p :l:tij t1e of radius R has positive charge + Q. Which graph best depicts the electpt a:1 liutj:1dkm /3zric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphe jt/u kz*-zy0rre of radius R has positive charge + Q. Which grz* y ku0zj-t/raph best depicts the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.0u(ai+ 5 b+stqf30 m and initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conductini(b5s qtau++ fg wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, w0qg8ar2 e :kpxith 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 two identical posit:ud 7jv az+wy6zg-+k xive charges located at points 4 and 6 o +zdw:yg-jz+akxv67u n the positive x axis. Which of the following graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3lzr q3i w8 h6qqi5w:uv-1hrg0a 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. Whatq-60qw1 qg l8vriuzi: 5wh h3r 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 equilibrium is isolat3k*qjrymte (; ro y9(::umxxled 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 angle mm r:(xjyqrelout ykx:(;9 3*of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncharged conducting sphere of radius 3a contains a holloweu3drxva 96ozbl /l ,ovz40n p6d spherical region of radius a. A point charge +Q is placed at the common center of the n6r93lp ozu /xv4bz6lo,a dv 0 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 conducting shell has inne ap2d:a1pc;op m39 tkpr radius a and outer radius 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 inner and outer surfaces of the shell to be exactly equal3ppa12d:p ;aotmp kc 9?

  05.45: A spherical conducting shell has a net charge +Q placed on it cys:7to: dn).wh:gju. Which of the following is the c ow ::yg7c:s udn).tjhorrect 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 B outside the sphere. As r goes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and radiu /*f8crp-dn o+lcfp( ks 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 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 δfo8/-d*pkccfnp r( +l is an infinitesimal amount and all distances are from the center of the inner sphere.

  15.48: Two concentric charged conducting shells are in fre y-znk4-lke: +oca:xz e space. The outer shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is known -nz4az :xeok:klc-y+ 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 3c0hlcxdm 7+ sxws o*ut.. 8irattempt to describe physical phenomena. Which one of the cwi+suord.c 0xs h*t78x lm3. following statements is correct?