05.20: A portable radio that is playingogntka6w dsgmn6/1;o s.g*v- is placed inside a screen cage as shown. When inside the cage the radio stops pnv s*-sagt;gn1o66mdwk/ go . laying because

  94.21: Which of the following statements about solid conductors in elec 0ifkp1z: kgw;trostatic;:pi wgfz 10kks 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 offa s*k) e0;oyq radius R has positive charge + Q. Which graph best depicts the electric potential as a function of r, tho;)y fq*0aeske distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R has positylme 3(p39)do 6flfmoive charge + Q. Which graph best depicts the electric field as a function of r, the di 9elp)o l(36fyf o3mdmstance from the center of the sphere?

  96.21: Two isolated conduln2h35hjy 9z tcting spheres (S1 of radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.03z2jhyt9hl 5n40 m and initial charge + 2.0 nC) are connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with differentt7df3 vgi70 opos/( gp ax56jz 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 located at potu1ngn: etgz j7-emd+f 2k0w0ints 4 and 6 onf2:0 tee-j k7n0g+ nt1gmwdu z the positive 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 contai:kv 7su4nq3ekmg l.l4.ohq )o ;cj;r kns a hollowed spherical region of radius 2a. A point charge +Q is placed at a position a distance a from the common center of thu;llq:ns4 ;kjko )m ehvq7gc k3.4ro.e 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 equilibri* dju,m cjcu8.um is isolated in deep space with a net excess charge +Q on it. What is the electric potential (assuming V(r → ∞) = 0 ) udjmjc.* ,8cuat 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-h2 zipmrh8w3 conducting sphere of 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 center of the spheresrz mp- 2whh38i is:

  04.50: A solid spherical conducti4 kaoikyc uzj ;u0b,5:ng 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 in i,cy5zouj k;k0u4b:aner and outer surfaces of the shell to be exactly equal?

  05.45: A spherical conducting sh h tdtbqy/cy)iais,p*d0ull2z7n: 5 2ell 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 *bhalt upq i7s n522/d) iyt,ycd0z:l 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 ix* ;.llop/g b9lnji4hs surrounded by a solid spherical shell with charge − Q, inner radius 2R, and outer radius 3R. Which of /bnpl*9illoh.x 4g ;j 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 chargef784a5 fa jhkzd conducting shells are in free space. The outer shell has innka zjhf 784fa5er radius 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 presented below that attempt to describe: rvm7kdf*)*vnn ps( kfma((i/ (qk qc physical phenomena. Which one of v qvm)is:f7(ca/pk*nk mn (rk( q(*f dthe following statements is correct?