05.20: A portable radio that is pl/loz ujl 5x-,caying is placed inside a screen cage as shown. When inside the -,lxu5zjcl/ o cage the radio stops playing because

  94.21: Which of the following statements about solid conductors in electrod. sfiao8e7 z:4haul6staticshl zaus da. :47f8ioe6 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 positic pb(e4sl1q-jnj2* dhve charge + Q. Which graph best depicts the electric potential as a function of r, the distance from the center of the sphjlc*pb1enj4 hd2( - sqere?

  96.36: An isolated conducting sphere of radius R has positive charge + Q. ol3.ciuk 5nd ,Which graph best depicts the electric field as a function of r, the distance from the center of the 5k,diuc. no3l sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and initiucycvjbpwt +2 3/.*xxal 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 flow in the wire uj2*w.xuvc/3yb +cp xtntil:

  17.46 Two copper spheres X and Y, w;0rcy t6l7 uma9pqlzb -hf87jith 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 identicjaweq 78i n1b6al positive charges located at points 4 and 6 on the positive1jib7qenw68 a x axis. Which of the following graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a hollg6h;i(iyu(:z z a.ezd*h*embowed spherical region of radius 2a. A :*zei db ze. 6(h(y*gi;muazhpoint 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 the figure by P?

  11.46: A hollow conducting sphere in static t*vk1e a(-k*u 8t 9oa2 za3 dsixx wut-nl47mg 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 haaixzsa1*x * t9o (gwn - ve2 um3d4-7lautk8tks 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 2lga-)s ;nbgnof 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 cens bg;g2 nn)-alter of the spheres is:

  04.50: A solid spherical conducting2,wv98k23mw jy8lvbh a9 :grmra xc)w shell has inner radius a and outer radius 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 density on the inym:hka a j8 2,wwrg8vx crv39wl29b)m ner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conducting shell has a net charge +Q placed on it. Whiyd1rovtx 6 u bbk+0q3+ch 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, p yd1bub+v rtkx+ 6q30ooint 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 o h+y 7dwjxkrq2v-d:. 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 a.27dq o+ w :-xykvrhdjre 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 cha-:kzqs amr5/ prged conducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. 5pq/:-a mzskr 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 that attempt to descrfdiyh( :04odwm0plz ) ibe physical phenomena. Which one of the following st:dzo00 w ) 4diphmlyf(atements is correct?