05.20: A portable radio that bl, xuo2 ,ndsx2b +z14 b/njncis playing is placed inside a screen cage as shown. When inside the cage lnxs2xb/d b+ znc boj,12,u4n the radio stops playing because

  94.21: Which of the following statements aa0zg0q 28jq jwbout solid conductors in electrostatics are tq8qwz jg j0a20rue?
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 conductinj1) wn3p -e zb:8p7bq: (o1apd umbhjtg sphere of radius R has positive charge + Q. Which graph best depicts the electric potential as a wb mb7po:- q:1)bj3 te pn(1u a8zphdjfunction of r, the distance from the center of the sphere?

  96.36: An isolated conducting sp5ucba;t.edh 9 here of radius R has positive charge + Q. Which graph best depicts ta; 59cb .duthehe electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m ag:gp8gk s8j73- glrzai t*wm2 nd initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conducti2g3 p7kami gwj*s-g8:r8 lgzt ng wire. Charge will flow in the wire until:

  17.46 Two copper spheres : hguc9,xd ;aiX 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 locate,6zerfw8ecqyu pkw/ w*a: a1 0d at points 4 and 6 on the positive x axis. Which of the following graphs best represent the electrical potece1 zp,wu8a / 0ew:wrkf*qy6 antial along the axis?

  03.50: A solid uncharged conducting sphere has rv0nrq t0 hw96yadius 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 field at the position r = 4a from the qt0y6r nvh90wcenter of the spheres as marked in the figure by P?

  11.46: A hollow conducting sphere in static equilibrium is isw0f ki8 hi7nj cc;h)6bolated 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 ih)j7;i6 whcck 8f 0nband 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 hoex1qq(5 e*y 5,ffrrldllowed spherical region of radius a. A point charge +Qlef(1ed r*xrq5f y ,5q is placed at the common center 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 radius a and outer y -96+wi7xg1t :i 3vguhqrblt radius 2a. At the center of the shell is located a point charge +Q. What must the excess charge of the shell be intgu697 wy v+x-1i:ghtbi 3qrl order for the charge density on the inner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conducting shell kmd6x4fd1;im op3wxu3p -e c) 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 R from point B outside the sphere. As r goesp46xwc id;e up)3 m31dmkxof - to infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and radius R. y 2- w- b3nu gowm(1s/tk 2-swaa3bizcIt 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-a t nkcuom12b(bg3sw3awy2-i-sw/z 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 are in free space. The r:xb 5z cx99jj7nn7bbouter shell has inner radius 2a and outer rad jb9 j 7nbcbxn59xz7:rius 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 presented below tc493 hvcwl5n qhat attempt to describe physical phenomena. Which one of the following 9v4q5h cw3c lnstatements is correct?