05.20: A portable radio that is playing is placed inside a screrq;8b0a sn (x k6rnpi,en cage as shown. When inside the cage the radio stops playing becauseair0 x(6nq8rbsknp; ,

  94.21: Which of the following stata bjg:.7zuk;(dqj+t wements about solid conductors in electrostatics are true? t.kgj dbzaw ;+7qu(j:
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 positive char:5w.3f6ev f fu f,0wn1e+r (cqocwbnhge + Q. Which graph best depicts w u56er( ,n vohe.f1fqw fc:0w3fn+bcthe electric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R has positive chargeov lzvjf1c9k,j 9h8o h53z0j y + Q. Which graph best depicts the electric field as a functijvohv1,j3l 959zkyf8oz c 0hj on of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m aia+ i13aljpdhv16 na/nd 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 flow in thepvja l3 a+6ia nid/h11 wire until:

  17.46 Two copper sph g:e *t top6evy6oah0,eres X and 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 loc 3rw 3i/pwmhm+m q;/ 8efjze1vated at points 4 and 6 on the positive x axis. Which of the following graphs best r r /1vmwf33ijhwm8zq;emp+ /eepresent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a hollowy, (yt(c9b4b2t.hba 6ks meu ged spherical region of radius 2a. A point charge +Q is placed at a position b,t2cs ( abue9(ghym 4 b6k.yta 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 equilibri0q3k7:4gf 6 o6jbkgl1 fqlkez um is isolated in deep space with a net excess charge +Q on it. What is 7f3k zb4:le6 q 0qk1l6ojggfk 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 sphere at an angle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncharged conducting slug :7c5i4x; xezn4huphere of radius 3a contains a hollowed spherical region of radius a. A point charge +Q is placed at the common center of54u iu;hzcx:4gn elx7 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 conductizbmy8eo) z:+ing shell has inner radius a and outer radius 2a. At the center of the shell is located a point charge +Q. e+)z:boiy8 zmWhat must the excess 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. Which of faje t xf-r (8(ume+z6the following is the correct relationship for the electric potentia8zur e (-a6f+etf mx(jl 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 /rmt -dmup.2hfdj+v2 conductor has charge +Q and radius R. It is surrounded by a solid spherical shell with charge − Q, inner r-df/hr2mv+j .pdt um2adius 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 distances are from the center of the inner sphere.

  15.48: Two concentric charged conducting shells art zw0rhec v31)e in free space. The outer shell has inner ra)v ch01e3rwztdius 2a and outer radius 3a. 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 pres9hcu.d 05q dcpj zs2v1ented below that attempt to describe physical phenomena. Which one of the following statements is chu9dj1. 0s 5cqpz2vd correct?