05.20: A portable radio that is playing is placed inside a scr xpc.d. xlm+o7een cage as shown. When. xdxpcl. o7+m inside the cage the radio stops playing because

  94.21: Which of the folll8 m+en*d yon( 4gvn1jj9a7 wnowing statements about solid conductors in electrostatics are true? 4(e +lyna81 gw7nodjn* v 9mjn
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 posibunng4v-, j hcd5*x8:s tf d*ktive charge + Q. Which s cx-g,5nh8 d:vf4n*tj *duk bgraph best depicts 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 has positiveqp nz -lth;f;, charge + Q. Which graph best dtn;;p hz -,fqlepicts the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting sphereskub30j :m7 rwgg ktd70 (S1 of radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m dg00bm k3k7r:jtg7 uw and initial charge + 2.0 nC) are connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheresw+/dsrtqd(f e( (u uv ;m)/./vtftvwy 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 positvpur5fy5ppw04k s;cl(b /wfra;45x yive charges located at points 4 and 6 on the posi;445c0 wps5pyr wu r5y( x;vbfpla/fk tive x axis. Which of the following graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere hau4*xc gt;y71bwm+qp z s 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 from1 u*c+gptmb;4xyw zq7 the center of the spheres as marked in the figure by P?

  11.46: A hollow con +6aft6q(ln/aduwjd 3 ducting sphere in static 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 fu (q+j a 6fddw/tn3a6ligure? 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 woo3 xvk)vl pi+d8j/i 5a-d2r3a contains a hollowed spherical region of radlx /v58 -kidv2doj)rwi oa p3+ius 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 center of the spheres is:

  04.50: A solid spherical conduc f*esguo/lr u.u.jk7 .nlx-9vting 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 forxjn .o .f9lk.rus/e7*u-u vlg the charge density on the inner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conduty -1q4pwv:qbf-egt )xvu(b9zgg0 4 dcting shell has a net charge +Q 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 distaf-gdq 1x 44wb(vty:ep qzg9 0 gu)vbt-nce 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 condoop .s4oq t) f15ey1evuctor has charge +Q and radius R. It is surrounded 4ef11o q5e.vpy) osot 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 + 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. The outer sh+x/y * kvvaxcxul wime00(*w9) lkd ,rell has inner radius 2a and outer radi(xd y9rwx me/kkl0* auv+ 0*c,xi)vlwus 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 presented below that ar2+pu3zp ; zahttempt to describe physical phenomena. Which u ;z3+p2pzrha one of the following statements is correct?