05.20: A portable radio that is playing is placed insi1pjmewm*j 4y 7de a screen cage as shown. When inside jwe147mym j*p the cage the radio stops playing because

  94.21: Which of the follokqma ; em:(hsc9nub 77wing statements about solid conductors in electrostatics are truen9(ksmue7:q ;h m7bac?
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 polny wh 811pqsce0m 6l9sitive charge + Q. Which graph best depicts the electric potential as a funlsy 8h91pn0welmq 16cction of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere xjkwg6y/ nwa /8x7hq- of radius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the distancegy8/- k7w6 aqwxj/nxh from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and initial ch 4kvo18u 0j1 ;fsur ep4i:jwg*r:jltdarge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are ot r:141 r g8svjljdupuf;4ji ewk*:0connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper sphecfu-e;e nky6 (g (w3,b8iu /bo6p sbarres X and 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 positive charges locat8t20 d-e-vxcq9u uls7 qqt)t ced at points 4 and 6 on the positive x axis. Which of the following graphs besqlxut28dc c)7--qtst9qve u0 t represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a hollowed s*gvj:)h1yh k apherical 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 elecyh 1 kjgh*a):vtric field at the position r = 4a from the center of the spheres as marked in the figure by P?

  11.46: A hollow conducting sphereg7b5afgvwv s 8zhx11 / in static equilibrium is isolated in deep space with av8vg 1x1/fz7 awgb5hs 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=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 contai4 d8bgk +us vt5zjli02ns 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 → ∞k t+uvgb2zs d5i8jl04 , the potential at position r =2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and outer radius 2amsaz9bfq u a0 h g4u-1b61r)qn. At the center of the shell is located a point charge +Q. bqfs9aabz0 -gh4 u r61n1 uq)mWhat 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 equal?

  05.45: A spherical conducting shell has a net char8d(gv) a r(oy(0ewhsyge +Q placed on it. Which of the following is the correct relationship for the electric potential at the 0s(oreh y(ya8 w)v (gdpoints 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.higbv)no 15 vwym) 0y7 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 f yv)iy1)7h n5owvgmb0rom the center of the inner sphere.

  15.48: Two concentric ls,t)ognt/sxqh 9 *.dcharged conducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The inne o)dqgns, /l*9thtsx. r 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 presented beloqy 2hf*mb 4-7b5)i n2xgeid h,y4 kqduw that attempt to describe physical phenomena. Which one of the following statements isnudqbg2bhfm * xd 42)iqkh4-5y7, iye correct?