05.20: A portable radio that is playin:hqd,d /yxta :n)s(b kyxen3f s,5ln3g is placed inside a screen cage as shown. When inside the cage the radio stops f ):3dedht yl x:bsynqska/5,xn(, 3nplaying because

  94.21: Which of the following statements about s;p30f e vgimp*olid conductors in electrostatic*v ;megf30ip ps 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 R has positipkc f:yi.pt.8ve charge + Q. Which graph best depictikpy : 8f..pcts the electric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated cooa7-ha zlo9g r 79oc;24br*ibwpqw0z nducting sphere of radius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the distance from the center of the sb ;w hir2ql oab7c o047p*zroa-9gz9wphere?

  96.21: Two isolated condu9l)zo5ma ngn, cting spheres (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 cono n9n5gm ,azl)nected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, witv 7p1w2c2fn sc2ah*/( 7fcpra9an qtrh 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 charge 7vaxzm0 n7+x-c4d swos located at points 4 and 6 on the positive x axis. Which of the following graphs bezm+ 7xdsv7 xn40wa-ocst represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a h-2gnq0 h:edwhollowed 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 sphe2 hw0hg d-e:nqres as marked in the figure by P?

  11.46: A hollow conducting sphere in stati; 5;z cxl3u20bsw);mwqbom snc 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 sphere has radius R=3a and the point of interest is at a location r=2a from the center of the sp;sms )mxqn5z w0wlbb3o; u2 ;chere at an angle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncharged con/m0 e0dao7rtk ducting 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 k tod/ 0amre70of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and out2hyt9qli.n 3ag uxhb)7+vu; e u.tjj 1er radius 2a. At the center of the shell is located a point charge +Q. What must the excess charge of t1tjl.9) +bhg ;u3tnj2uv7eaiqx hy u .he 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 charge +Q placed on it. Whic*j kr +ixj;0pnxz5t .bh of the following is the correct relationship for the electric potential at trkjtpi0zb*nx ;.x+5 j he 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 ht;/5)06 ua:i db zu0+ikdtouiv( tf moas 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 infinitesimal amount and all di d)0uv m:u;t ft odi+io6/(ibzuka05 tstances are from the center of the inner sphere.

  15.48: Two concentric cha*6sxyi e*kal+si :n1srged conducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The inner shell +**y eisasi1nx6 :s lkhas 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 descriu : bok: (25pj5dy+blzgcgyvoa*v., ybe physical phenomena. Which one ybgj,g 2yav(z*5vo +:kl:bc 5y upd.oof the following statements is correct?