05.20: A portable radio that ((s2 43zjk khp ,omrmsis playing is placed inside a screen cage as shown. When inside the cage the radio sto(k( 3p 2jmhro4ms,kzs ps playing because

  94.21: Which of the following stat(n ;i+nqsrw. hzem a 5.vyms wy1b4)/lements about solid conductors in electrostatics are truwm /w.imr;(v51+)qs lnynsybe .zah4e?
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 cnwtvq0fqx(f: 5l jr(qyfuz4 m*p 90i6onducting sphere of radius R has positive charge + Q. Which graph best depicts the electric potential as a function of r (rip*0x49znm:y f6fq(t w5qulj0qvf, the distance from the center of the sphere?

  96.36: An isolated conducting sphere ofwpkzx))j l8o ) 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 spho)jx)wz8l )p kere?

  96.21: Two isolated nqxef -g/5yt4g ud j6(conducting 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 yg(u4tfe 5gndxq-j/6 connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with different radiovao+q +tne9 5i ($R_x>R_y$) 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 pos x h7o8bu, *vabx8szd8-nubgg*q q1,xitive charges located at points 4 and 6 on the positive x axis. Which of the following graphs best representb8xg vu8 q-abb x h*,qsn7udx1o8 g*z, the electrical potential along the axis?

  03.50: A solid uncha*)cj v3 4laoyy bd .;( jqgbh-1bsfqg0rged conducting sphere 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. What is the magnitude of the electric field at the position r = 4a from the center hjj( ;d)v.ys *y14c gfgbbqqla-30 ob of the spheres as marked in the figure by P?

  11.46: A hollow conducting sphere in stati1n1l5keyqt ; fug0j:lacw1z0ap *2ij c equilibrium is isolated in deep space with a net excess charge +Q on it. What is the electric potential (assuming V(r → ∞) = 0 ) aja:gl pk5 ; taicj11 01l* qzn0wu2efyt 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 radius 3a conta- lzic(s yhl261d i5mce;h -dhn9r.khins a hollowed spherical region of radius a. A point charge +Q is placed at thel 1dzdii. lkn2c5e69 shr- (-hyh ;hcm 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 spherical conducting sh3x 4-+u+2kd lf jpdnwnyg-b(hell 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 - 3b +x juk+d-4nlwn y2gpd(fhfor 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 placedv.i3;v ntkh bji c2o2. on it. Which of the following is the correct relationship for the electric potential at the points32t 2oic.hnj .kb vv;i 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 charge +Q and radius R. It is su 2z1 0anra26x5 cgoryirrounded 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 ax1r 5nyiazrg2 20cao6re 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 con3 b(4q08noyowqu hid ;ducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is known that tq(84 y;0qnihw3b duo ohe 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 sever4ojbc -)ihdm8z 7lz9dmbh a -kv -)va4al statements presented below that attempt to describe physical phenomena. Which one of the follo 4m bd-)zah m 9ov-zh-74)iljk8vdcabwing statements is correct?