05.20: A portable radio that is plga 6qg/8f pge/ im81zkaying is placed inside a screen cage as shown. Whenzka8/ge/i q m8pf6g 1g inside the cage the radio stops playing because

  94.21: Which of the following statements about solid conductors in electrlv.,xhxrcrrj2r 9l6i 4m7+e s ostaticjx+hr.im4r s , rv967lxe2clrs 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 spherz s8*4yftsi y*8q g1goe of radius R has positive charge + Q. Which graph best depicts the electric potential as a function of r, the distance from the ceq*gysig1o tsy8 f *4z8nter of the sphere?

  96.36: An isolated conducting sphere of radius R has positive c( agj(6i v(2wqeo jue q:bnb75harge + Q. Which gra7 (a6bnqeu5w2:( b(ijgvqe o jph best depicts the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius nx3) 2vsea4;gk a5cam0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge2 s) 5ecgaka;a4 xvn3m + 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 different radtyvedoyvv:ua5.g9,1q o 89kxii ($R_x>R_y$) 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 identow n;,e8 0plgiical positive charges located at points 4 and 6 on the positive x axis. Which of the followiniwpgn l, o8;e0g graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a hollo p -xjjj2uzg*p ij)4gt56m rt(wed 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 cent4im2jgt )g(zp-65*ju pjxrj ter of the spheres as marked in the figure by P?

  11.46: A hollow conducting sphere in static equilibrium is isola ;m1elh792; v2kljgrdmty gobn6 u4e-ted 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=y 4t 9dubme6gl 2m72vg;1n h jlko-e;r2a from the center of the sphere at an angle of ${60}^{\circ }$with respect to the +x-axis.

  02.49: A solid, uncharo d/l-) nuiyl )c ivcgvg9k1 w6r6z-w6ged 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 adnciv-u/w-)l c vo l)gkw66gr6 i1z9 y from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius3g2egegjxo *:wulerd 3-/k+ s 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 beoek:jw rg3 /*xl2+ eugesg-d 3 in order for the charge density on the inner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conducting shell has a net charge +Q placed p gewcl/o3v 1m9;+k9 ownj, jgon 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 R from point B outside 3g cwjjokp ,g;o 9+lv/w91 menthe sphere. As r goes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +.khvt 2dno0 jkr1u,* *ygtyy 3u8ik*aQ 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 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 fh* 2 y 8*kdt1kgr.o a 03iutk*,junyyvrom the center of the inner sphere.

  15.48: Two concentric charged conducting shel)en-5 vq0nsy xit- dv:ls are in free space. The outer shell has inner radius 2 sdy e:t)i-nn-xvv0q 5a 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
$Q_{i}n$?

  14.35: There are several statements presented below .sta5e62v.eifx8 pajthat attempt to describe physical p6 s.j28a5a epxt.f eivhenomena. Which one of the following statements is correct?