05.20: A portable radio that is playing is placed insidf 6xegug 42lu60i zqs*6lr d4me a screen cage as shown. When inside the cage the radio stops playing bec62u6g4re4sizgdlq 0f6uxm* lause

  94.21: Which of the following statements about solid conduct t d rf2f:;.e:renjerd *pl2t1kabg ky 501gd4ors in electrostatics are tfn1gd lp*eef d.gt k0rj1;ryk2 bet:ar :524drue?
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 + Qxbu7y f,3 zwfa k8n3t+. Which graph betuz+ b3f 7 a3w,fknyx8st depicts the electric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting tvzzr 3.5bke0sphere of radius R has positive charge + Q. Which graph best detb k zz3.rv05epicts the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated k f;;b2 xdday,conducting spheres (S1 of radius 0.030 m and initial charge + 6.0 nC and S2xfa ;d d,2yk;b 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 andu:h d/r0avjl 0t;dh,k 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 atcg 4vwa. ezs)kt)bym. 0 zjo0: points 4 and 6 on the positive x axis. Which of the following graphs best represent the electrical potential along the ajebvt.:ga .0z0okz)mcwy4 ) sxis?

  03.50: A solid uncharged con /q 1v/0iwormxd1 gi+wducting sphere has radius 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 spheremx0g1dwiiw/ r+q/ v1 os as marked in the figure by P?

  11.46: A hollow conducting sphere in static equiliwq2w(947 qml p 9l+pxodgn ,uvbrium is isolated in deep space with a net excess charge +Q on it. What is the electric potentio+v d4nw(g7lqplm wx 2p99qu ,al (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 spher-apb-v pw8t mhcmw2k4o gmb7gf; s-: 9e 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 2c9 wt hbgams;pvmopb-8 -gm -kf47:w from the center of the spheres is:

  04.50: A solid spherical conducting shel(jen+8 w3dv frffu+f- 4d aa9cl 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 outf4rfnf d -dwje v9c++8auf(3aer surfaces of the shell to be exactly equal?

  05.45: A spherical cond3i 5 /wt-tpyiyucting shell has a net charge +Q placed on it. Which of the followiii5 3tt wp/y-yng 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 B outside the sphere. As r goes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and p1 -inox)ik8wt8q 5yc 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 tx ko5 qni8-8pyi)wct1hat 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 co27dyg(7sv gwshoe5 a,nducting shells are in free space. The outer shell has inner radius 2ehv,57ga ( 2o dg7swsya 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 tql)x p,r* reoq ;pce99hat attempt to describe physical phenomena. Which one of the following statements is crxr9) peo *ce9l;qq p,orrect?