05.20: A portable radio that is playing is placed inside a sccpyp/u06ec w h.* t8hureen cage as shown. When inside the cage the radi6c/8cpehu .wy0p h *tuo stops playing because

  94.21: Which of the following statements about solid conductors in -mla3kv*a+ jq electrostatics are trueqa*lv +j- mka3?
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 spher0 wcr72 2ojxzq(8oorm nyxl+ 8y9hhe1e of radius R has positive charge + Q. Which graph best depicts the elhn2oz8 0(r 9 1 y2qxrwox 7+he8ocmyjlectric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of r -7sbr5dg b 8ii/ 3unsb0egvz4adius R has positive charge + Q. Which graph best depicts0bs7 g i vb3/g -ndi58erzsub4 the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conductg/6lh xf- 2tljing spheres (S1 of radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a cl / g6f-lhxtj2onducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with different radith+jpgesuwt :) qaq1 :,d+5v1 umya, ti ($R_x>R_y$) 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 positivvl6d/0isdgrg 9s s+o8 e charges located at points 4 and 6 on the positive x axis. Which of the following gra+vr60s9g8dgsio s/ldphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a zmt612lv9 u u1+1qi d m.sskvyhollowed spherical region of radius 2a. A point charge +Q is placed at a position a distance a from the co 21v6zm skiu +9qy1.lvmdt1summon 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 equilibrium is isolated inc*x /j,2 i0k gybpiav;2pxtdc -f 4;kmdn:fo / 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,t i2;2p/x vc *- k;/ okjgp4ddfbxcy:imna0f 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 sphere of radius 3a contains a hollowed spbk (u3/1qxhgebds 4ydct)j. 0herical 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 = g(h/yb0c.dk 3e)4qs btd1x ju2 a from the center of the spheres is:

  04.50: A solid spherical condukqfh9v o) /qko:ky;d.cting 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 t;9o.kyhfk qv :dok )/qo be exactly equal?

  05.45: A spherical conducting shellrz qy2pj s)x54:yzj keia72 +2urse t0 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 sp 5z:72ji2q e ek u 20rsjayyrpx+t4)szhere, 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 c+j-9gtvy 6yl gj3wb w1onductor 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 tgb jw9 ywj1+y63-lgvpoints 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 from the center of the inner sphere.

  15.48: Two concentrixbe5p wc /a5r, v-n.jrc charged 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 known that the electr.vpa5cer j-5b w ,x/rnic 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 describzf /w ho+5j3qee physical phenomena. Which one of the followin/fq5 jwzeo+3h g statements is correct?