05.20: A portable radio that is playing is placed inside a screen -nht cwdo-o tctx 9.cv3l(9t * cage as shown. When inside the cage the radio s-hlx9 o3tt*cc9dt oc.-t vnw( tops playing because

  94.21: Which of the followin(f31 75z-lhu icld qimg statements about solid conductors in electrostatics are trul(q ci 5zm1 iu7dlh-f3e?
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 rk*jt) ;6mlrlk adius R has positive charge + Q. Which graph best depicts the electric potentill ktkm*;6)r jal as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere uu z xn4iu-o;lhl7jl378i 7xn5hfr0iz9g/ m kof radius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the d 7h lmiljrof 75uixh/3u 7 zu8; 9i4-nlxk0ngzistance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and initial char(0 sua 45 fr+myfunv,rq 5oqn2ge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connecteqrro u yvfmaf+5qn 0u,5s4n2(d by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres6l8ac6mu dphfz35* /vg z wi,b X and 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 two identical positive charges located at points/ nx xo/+y 3foxffwo6 el8)v(q 4 and 6 on the positive x axis. Which of the following graphs best repr( oon+x3lfo 6/vew)qyx/8fx fesent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a x45mck gch/x+ contains a hollowed spherical region of radius 2a. A point charge +Q is pla5gcx/ hcmkx+4 ced 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 sphereu4prs z6 ccw (yim8px v1d(0ac 0j.n03jbv;p x 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 sphere at an p4vc63wxpb(cp a.n ri x;j(sz8y 10jd0 uv0cmangle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, unchayeu w/83vv 8ogbo0+ kirged 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. Taking V = 0 as r → ∞ , the potential at position r =2 a from the center of the sphereb3/ovg+8 yeow8ivu 0 ks is:

  04.50: A solid spherical conducting shell has inner radius a and outer radiepgflalaod),-c9a.: )(jluqgk9b 2 x:hx2a i us 2a. At the center of the shell is located a point charge +Q. What g.a 2a) b:gk l(i9lfx c)eladauh 2:qpoj9-x,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 she2pwqtygiyxx0/en xnb7 0 c6-3ll 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, point B is at the surface of the shell, a distance R from point A, and po6nq2p0y-xt/xy 0 wn c3bxegi7int 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. It is surround ygcuclox q.e8qp.2q12x9* mted 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 and all distances are fro q.yxl8 t uqx2129comp*cqe.gm the center of the inner sphere.

  15.48: Two concentric charged conducjt+*,fuqas/ xj+t1u lting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The inner shell has radius alu,+j*sjt fqu/a 1x t+. 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 d:*decx1n pi: describe physical phenomena. Which one of the following statements is cordx :en:c1dip* rect?