05.20: A portable radio that is playing is placed insiqrpe5um d00le67ik/+h / ymmode a screen cage as shown. When inside the cage the radi0oi m/0q7myumh 6/e elprd5k +o stops playing because

  94.21: Which of the following statements about solid ckz* lysbw q)3*onductors in electrostaticws3q*y*)bzk l s are 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 radius Rw.9 yj1hc./ 6l s-(kpgzshwek has positive charge + Q. Which graph best depicts the electric potential as a function of r, the distance from hg sy(9 sk/zkj6e1.phwl.w-c the center of the sphere?

  96.36: An isolated conducting sphere of radius R has positive charge + Q. Whp52 p dk4vfyk1;s2zch ich graph best depicts 4k p2yhdkvscf;51z2 p the 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 and initial ch mqh du4z l),(ztq2v3 khe4gi8arge + 6.0 nC and S2 ov uqie2q3z h4ktm,4d ()lgz8hf radius 0.040 m and initial charge + 2.0 nC) are connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with difffjccftw*,(pfk:a x 7 9erent 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 posiiiux-0gu -b891 l/ mnfuxpu7a tive charges located at points 4 and 6 on the positive x axis. Which of the following graphs b- u/x8paiil m0f x9b-1g 7nuuuest represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphemn2se. w k l(yl*dqd 17hhkyr lcf;;(8re 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. Whatnm*f.dchl y;7(khlw2 dl; (sq1yker8 is the magnitude of the electric field at the position r = 4a from the center of the spheres as marked in the figure by P?

  11.46: A hollow conducting sphere in static equilibrikc kvm8h2) a25yf +t(0n+ud (qjhmnwgum is isolated in deep space with a net excess charge +Q on it. What is the electric potential (assuming V(r → ) kmhfnh nu0j+yg5mt(cq2 wvak (+ 2d8∞) = 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 conductywtd 9v9v-/)h nck*aaing sphere of radius 3a contains 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 → ∞ , the potential at position r =2 a from the center of the s9vk*cy /a9v)h adn t-wpheres is:

  04.50: A solid spherical conducting shell has inner radius a and outer radius 2tq7gt. 4:eud ka. 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 surfacgt :q7ed.u4tk es of the shell to be exactly equal?

  05.45: A spherical conducting shell has a net charge +Q placed on it. Which3;tov oo 54pia 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 ov543poao o it;f 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 conducto4 ,hwajz08hzzu 5 pl 9vqfh*)ar has charge +Q and radius R. 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 infinitesal5,9z* apzhq z 08hhfwj4v)uimal amount and all distances are from the center of the inner sphere.

  15.48: Two concentric charged conducting shel76k4a kscy0un/uj c9er7 ul c0ls are in free space. The outer shell has inner radius 2a and outer radius 3a. The inner shell h0k7 a/ cuuj9uc7 kyrs046n cleas 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 5(*pyreqgxve) +d jjad- -(bx physical phenomena. Which one of the following -+xv aj*je()p- (byr5edxd qgstatements is correct?