05.20: A portable radio that is playing is placed inside a screen cage tjga7ghxf5a9 5 2 j vw*ay9r9bkgc98z bni81w as shown. When ig a8bawiy7*wh xc 9n kg18 bv9jg9tar 2zf5j59nside the cage the radio stops playing because

  94.21: Which of the folp q+h +usaij,4lowing statements about solid conductors in electrostatics are truqs +4ajiu,+phe?
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 co)h 0c58zjj9n j2r:qgn2 eoft jnducting sphere of radius R has positive charge + Q. Which graph best depictcn:j n9)hgjf0z e58 r qt2oj2js the electric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R hazae*.aw g;m:( g1wmdg s positive charge + Q. Which graph best depicdzg:g .*aw1a w;(emgm ts the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conductul 3,iury7 erjs,:saft;* 7r ting spheres (S1 of radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m an7,r e:ryf;us 7lu3ia*jrtt,sd 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 different rmvu 1s12+ kpn1+5m )lvklvqokadii ($R_x>R_y$) 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 tw f6yl+v uw5ec.o identical positive charges located at points 4 and 6 on the positive x axis. Which of the following graphs best represent the electrical potential along the axis? u5l+cyw e6v.f

  03.50: A solid uncharged conducting sphere has radius 3a contains le2h8jzmhf,+ym t1n 2m bhl2(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 po8h,ly1 m+2mnz2jbt lm (fhe2hsition r = 4a from the center of the spheres as marked in the figure by P?

  11.46: A hollow condue7 eh42dd cno3p:+ fm7b z6u*nvv6iwbcting sphere in static equilibrium is isolated in deep space with a net excess charge +Q on it. What is the electric potential (assuming :nee46z vdnpv7i*b63bf2hcom wu7+d 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 r3avjj ni/liy )x05z;ofk/ew9adius 3a contains a hollowed spherical region of radius a. A point chargej/;iyf90vi n5) e/xkja z3olw +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 sphericazqj3-ix0 bi p 9rw73rjl conducting shell has inner radius a and outer radius 2a. At the center of the shell is located a point charge +Q. What must the rr jq 0iw x39i-jb7z3pexcess 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 charge +Q placed on it. Whig;n+k p(s2jm xch of the following is the correct relationshisx(mg2 ; pk+njp 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 goes to infinity, V = 0.

  07.42: A solid spherical conductor has chao w 5luy4k +uv68wf)ntah9 du.rge +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 thesw .fu+4u) 8d9yna56kt wohlvue 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 from the center of the inner sphere.

  15.48: Two concentric charged conducting shells are in free space. Thr)z)z b/2 jrlgu2(:alu an-*nrv mdv3 e outer shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is known tham*2abn du)nu3zr/r:l2z lvg jv( ra) -t 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 belowlvqhiw7x:r* v22b )- e:bm qik that attempt to describe physical phenomena. : :)ibe2*bk27 h l mv-qrqxwivWhich one of the following statements is correct?