05.20: A portable radio that is pliic7p iixh 365aying is placed inside a screen cage as shown. When inside the i7 5cp xih3ii6cage the radio stops playing because

  94.21: Which of the following statements about solid conductors in elect lm6x9w5*8 npx qt+xzqrostatics69l xxn8w5 m*x+pqq tz are 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 charge + Q. aay qx4xx8g z3- z92s9xk nr1e Which graph best depicts the electric potential as a function of r,1r -z92qz3 aya4x 8nx9xgxesk the distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R has positive charge + Q. Whichco2ri ds.(v7t7 ;2 bi1by hjmz graph best depicts the electric field az1cdbi2rm.si 7bv(y 2;ht7oj s a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting u)(taf,5; w nlaj hw6uspheres (S1 of radius 0.030 m and initial charge + 6.0 nC and hwjuw t ; )5aufa,6ln(S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with differeg lm9h+wiq4fr) ojsh:b d2u.7nt 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 culfpmi sovl2w1;ak 18m8g;p 2harges located at points 4 and 6 on the positive x axis. Which of the following2gsl;m8v 2 8ao1wiu1m f pp;lk graphs best represent the electrical potential along the axis?

  03.50: A solid unchargewgd(54 gutfm wu6t8 9cd conducting sphere has radius 3a contains a hollowed spherical region of radius 2a. A point w(mg8 t5 64tdgcu9wfucharge +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 marked in the figure by P?

  11.46: A hollow conducting sphere q6dhtll c7he8 .qk.lh; u2 p,w20ucstm6m0e p in static equilibrium 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 spherq u p7ul.6m,el hqtste c 0whml0d.6h;p82ck2e at an angle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncharged conducting sphere of ranfd. j0gf .d5bdius 3a contains a hollowed spherical region of radius a. A point charge +Q is placed dg5b .d .ff0jnat 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 g bk qw .*1 bc7 5swtaih5-v+duq3ms)lconducting shell has inner 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 exaq u )-tl1sw5vhc.+5bbsw3da miq g*7 kctly equal?

  05.45: A spherical conducting s8c(wd1q ahig:hell has a net charge +Q placed on it. Which of the following is the correct relationship for the electric potential whcdag q1(:8iat 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 radius R.ge zqwq w*- f5j,h.gi1 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 δ is an infinitesimal amount,g5wh*iq.w -eq zfj1g and all distances are from the center of the inner sphere.

  15.48: Two concentric charged4b .,am9pu o6w tcrmicn)2tg6 gpf 98z conducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is knowp g bicm.rt98p6oagf)w6t4c2znm9, un 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 ste3rm ok 9of (sv5fu9c(atements presented below that attempt to describe physical pheno ce(oour(f9vsk 359mfmena. Which one of the following statements is correct?