05.20: A portable radio that-kdvq3 7* fwiza,r- bp is playing is placed inside a screen cage as shown. When inside the cage the radrpvw,z7*daikq 3f- b-io stops playing because

  94.21: Which of the following statem cl 4bh95edf:6ax+dw7i0 (g5ayom i ;6nx dmjments about solid conductors in electrostatics are ; 05emjh iogd ( 4fmy7mdc6ai6b5nawd x9+:xltrue?
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 posit1 kk4jq(c i -)qxa6zbtive charge + Q. Which graph best depicts the electric potenti-b4 6cika1 )(k qtqxzjal as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting spnhdrw3.y 8,( gb.vn xkhere of radius R has positive charge + Q. Which graph.vk gr8 .ny3,( dhxwnb best depicts the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spl d;,q nahtxp /95vzbxcmogyn02mg*,x; v- g/heres (S1 of radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conducting wire. Charge will n5x m9-za*vh2/y; gm xcqdt/;boglp, 0nx g,vflow in the wire until:

  17.46 Two copper spheres X anda7 w8h-mitfoc2 2nf/l 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 lock kww) k-: 1fow1qd uk,hym3)eated at points 4 and 6 on the positive)yw,3q1w eom-u1 )kw: hfkkkd x axis. Which of the following graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sp0n*syxi.s q77b,fzhvk 5e zc- here 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 field at the position r = 4a from the center of the spheres as marked in thsv0qx c-nbi7 , ze5sz*7fh y.ke figure by P?

  11.46: A hollow conducting sphere oj5u. 3np66 e lsyz wp+zj/jq0 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? The sp.j sjl+p/5yj o wzz066u 3eqnphere 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 containgmn2cfo*70gq+7dda ks a hollowed spherical dqfg2 g+7kc 0om*7adn 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 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and outer rof syh vebk/24zb0+n)adius 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 densityn/)vb hfeo2+4bz sky0 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 it. Which of a rum:esjr 2 ,q(/w.ugj1y zxsu.wf6, 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 froag (rsj w :uuy12/sr ,.qm.f6,xujezwm 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 i wm7wxb d2q9,ls 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 infinxm2dqw9w 7,lbity. 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 crbm rn0wl 1) ddcly9vwt:/;,+myu e8jharged conducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The int 1 m;mddcyl9l v):wrjwer, n/bu8y0+ner 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 that attempt to describe.rd7(i leok,6n :cje v physical phenomena. Which one of the following statemenn ,iode67kevlrj .:c (ts is correct?