05.20: A portable radio that is playing is placed insidekoqfvg2jd)t 96*7zhl a screen cage as shown. When inside the cage the ra dlgt9v 7j fk)*ozq6h2dio stops playing because

  94.21: Which of the l v/0k1 dj5ekxfollowing statements about solid conductors in electrostatics5l / kj1evd0xk 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. 2sw-lxs:hgdb 6 p9m ok.s+y(+b4 b hpx Which graph best depicts the electric potential as a function of r, the distance6php +bks 9-do ms+ .sbx(4wx2 hyglb: from the center of the sphere?

  96.36: An isolated conducting sphere of radius R has positive chotz((*u4vvaun 04wr) dv vi:j arge + Q. Which graph best depicts the electric field as a ouv0uit)jd wrv z(nv44(:v *afunction of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of nbcj r j; 3u;d+wnqd,.t.ntg *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 conducting wire. Charge will fltr;j,*jng.dw 3.;n+cbq u dtnow in the wire until:

  17.46 Two copper spheres X w fc5)17pq(s u:5b jpd ak0c4pnuni: pand 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 positi z l)y)x6og.djvk)cd /hu7,a,ln4dghve charges located at points 4 and 6 on the positive x axis. Which of the following graphs best represent the electrical potential along the au/,)ck) dda6,l4dgzh 7. yonxjgl) h vxis?

  03.50: A solid uncharged conducting sphere has radiusmwff, wx 3m2 z,b-v,*u bnssh: 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 electricfb-,us:m z w3*,b whx2,s vmnf 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 isoi6 1) +j egj;eotz3-6ozbwlrblated 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 hz;ej)tzj6go3e rb1o bl-i6+was 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, unchar: ,pi ca0p8c,abtt9/wo hbrt/ged conducting sphere of radius 3a contains a hollowed spherical region of radius a. A point charge +Q is placed at the common centert/ prcpi0tbh98c:,wb /aoa,t 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 conducting shell has inner ravj ksj2rog022 rrq3z5w5nvuwb 3/v6tdius 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 equa3uvs20jwv/r rqo jnt2bgz k 3655 2wrvl?

  05.45: A spherical conducsh7azy9)v kzlca9fum6,3sz ( ting shell 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 point C is a distance zzs)37vaz9u,9 (lkc mfha 6 syR 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. yr8fi1 k+m;y iIt 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 la1i +fyi ;rk8ymbeled 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 from the center of the inner sphere.

  15.48: Two concentric charged conducting shells ares.c.o r+jiix 8 in free space. The outer shell has inner radius 2a and outer radius 3a. The innoi.xi+ .rc js8er 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 severalv wv4tir9 ae03 statements presented below that attempt to describe physical phenome09v4w iav rt3ena. Which one of the following statements is correct?