05.20: A portable radio that is playing is placed inside a screen cage a- d1x+vb ,sdpodw:w )gs shown. When inside the cage the radio stops playing becau:+pw )sgd1x,d b-vd owse

  94.21: Which of the following statp(snyo :r5re9kqcr3c4 xtm/: ;. fwdbements about solid conductors in electrostatics are true?.n ; tpor:(c3wfrkb m4x5yrd/ce:qs9
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 p;pyhq 6d uf01yocak ).ositive charge + Q. Which graph best depicts the electric potential as a function of r, the distance from the ceoh;1 yayqfc6). kdp0 unter of the sphere?

  96.36: An isolated conducting sphere of radius R has positive charge + Qf k5n8 e6l lww fw0.ijwrv,y-+. Which graph best depicts th6w li+njww v0k.f y-elw8rf5 ,e electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 m and initial chargev5 cr.j cj(mcoh/g4*z1u w4qc 6zsz.t + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conducting wire. Charge will f5*gjv4 oc(cwh sm.jt.z uc q4cz r6/z1low in the wire until:

  17.46 Two copper spheres X and Y, with h :gwz6xo0bp8m/v9to 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 soxpbc ) w7e+ ;uo,czn;gg+t,whows two 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? )x gc w n,g7;;o,+cpzwe+btou

  03.50: A solid uncharged conducting sphere has radius 3a contains a hollowed s7 tln*e ime:7cpherical region of radius 2a. A point charge +Q is placed at a position a dism:n7clete* 7i tance 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 equilibrium is isolated in q:x4-+mfj h/ du0+r ;uenuj lqdeep space with a net excess charge +Q on it. What is the electric potential (assuming V(r → ∞) = 0 ud+nh-f4; 0/+u jmuj:e qrqlx ) 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 radius 3a contains a hollowhq7v /ln)g4;kvq jm-z ed spherical region of radius a. A point charge +Q is placed at the commokzv7/)m-hjql; nqgv 4 n 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 shell has inner radius a and outer rl;k:u nf3poib4q* (ze wh9t0 uadius 2a. At the center of the shell is located a point charge +Q. What must the excess charge of the shell be in oro4u i09;qehplb utk:(z3 nf* wder 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 +;oq.z 9k o jz76b0ijhoQ placed on it. Which 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, 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 tojb67o ozo9qz0.kh ;ji infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and radius R. 8cntd w6z67-5siom zwIt 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 +7c diow wns65-8t6zzm 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 c(i r5 )sh c,3utb56(rt jhd1ykpeo2nq onducting shells are in free space. The outer shell has inner radius 2a and outer radius 3a. The inner shell ha)u(nsp 5ot(tc1,iq jerdh325yk6 rhb s 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 attrer,8a 9a c(yrxps)zfz8oa2 2empt to describe physical phenomex, a8rr2s z2ac(zy 9frpaeo)8na. Which one of the following statements is correct?