05.20: A portable radio that is playing is placed inside a screen caea*n8z4ku h bu:6rfb+ge as sho n*8bkfuba4ez 6ur +:hwn. When inside the cage the radio stops playing because

  94.21: Which of the following statements about solid conductors in electrostaticewgoc6 6 vmz22s arg 62w62 veomzce 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 radbd 1 )fex7dys0ius R has positive charge + Q. Which graph best depicts the electric potential as a function of r, the distance from the center of the sphere?7)1fe xdsy0db

  96.36: An isolated cond */gg, 5)/g h.aken p*kwzwfbiucting sphere of radius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the distance from gg,//p.bhi* fwaegnk * k5w )zthe center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and in0evk. 0 5 epkr8p40xtre* w(pvycs g.jitial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conductppsj k4(er* r005y8k 0..wcevg xtepving wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with dij60*nu0qfj ,wx egn, efferent 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 positind/ 0mv0izzwb9op7pn: ( fd+fve charges located at points 4 and 6 on the positive x axis. Which of the following graphs best represent the electrical potentialo7:wf9z0n+dpm0ndz b v(ip f / along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a holt5u p-ls-6yc mlowed 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 thels -y5ump ct-6 spheres as marked in the figure by P?

  11.46: A hollow conducting syind-(, zcw/8p4kc ezphere 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 position labeled P shown in the interior of the figure? Thec/pzn iw,8d( -y ckz4e 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 hollowf3:o :6 fq o-3hneqnyo0pcy7d ed 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 o d3o-ne0c3y:qn: fpyqohf 76 r =2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner ralspu:yh zm3 :jig:m9+dius 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 exa:ulj mps::gi9z y +3hmctly equal?

  05.45: A spherical conducting shell has a net charge +Q placed on it. Which of ctj 0ta(wemu*/40 jg fthe following is the correct relationse j0 0a(/cm4g* fjtuwthip 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. It is syg, 1-fxaynk1nz/0 6.qmlljsh/cfb 7 urrounded 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 qnmk7hf6jsly 0nzcf/ 1,xy.l -1 g/b aof 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 shel1:+vuzo2di:y aoyk hw209 b hfr5iei(ls are in free space. The outer shell has 2fkhy oz1w h: (2ebouv5 :i0d i+yair9inner radius 2a 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 prese g ;9ojfw3dkh +d3ftmsp,0 7lbnted below that attempt to describe physical phenomena. Which one of the following statementt 7;ws,m39f+fp k3 lddb0ogj hs is correct?