05.20: A portable radio that is playing is placed inside a scjb0qk oz ipum(r+c02;reen cage as shown. When inside the cage the radio stops playing because zb0 i mr(0u; cqoj+k2p

  94.21: Which of the followingdb,sb a)mqj8py9k 2 g+ statements about solid conductors in electrostatics are true? jb m 2ykbpg sdqa),98+
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. m (9zz30 gri zt2bu-yeWhich graph best depicts the electric potential as a function of r, the distance from the center of the spherzzi0zybrtum-( eg23 9 e?

  96.36: An isolated conducting sphere of 1c kr57 d))ifuw+ ,kbhobk-j kradius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the dista)ukd7ikc)o h 5 - r+fb1jkk,bwnce from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m av4yfk5 0,-dz v2hrze2*gtg3o g 8lmcrnd initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conducting wirgglrrvcy,2o 0f 4-t*5gk 2z vdh3em z8e. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with different rad7 lim:5*,dv; zd f)er+t ceoylii ($R_x>R_y$) 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 tl uja it 9;)s2o gb.zw*ox,n *d2ws.xwwo identical positive charges located at points 4 and 6 on the positive x axis. Which of the following grax2su.i*b)ajw s .zd,o2 xlg 9wn*;wot phs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sp rv m.e:,c1,+mj odbvfhere 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 fieo:.,bd mcvvfe+1m j,r ld at the position r = 4a from the center of the spheres as marked in the figure by P?

  11.46: A hollow conducting sphey-l9yz0r8v qfs0z iu2t,ib:mre 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 positiois f92 i vbm0z0ut r-,lqy:8zyn 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 sphere of radius 3a contains a ho(dka/1(xmm 0iq r5sxrllowed spherical region of radius a. A point charge +Q is placed at the common center of the spm/ q idr(xmkxs 0a1r5(heres. 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 radic)+iw tj+xmv :us 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 cm)++v ixtjw :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 on ic9vij6o : g a25uegl2qt. Which of the followlouq9cv ag 52g: 26ejiing 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 radius R. mqe7al1l,dn-22sk rt 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 il2e,-sm7 1qd2nr ta lksolated 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 cxa :4 quf:-epuonducting 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 elep-4f:e:uqxua ctric 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 qm9 /5l9,luye f,b kfmthat attempt to describe physical phenomena. Which one of the following statementsm/,yeklf f lqb959m ,u is correct?