05.20: A portable radio that is playing is placed inspehaezk 4a kj+-u10euq+* g6dide a screen cage as shown. When inside the cage4 eg+zau1*qh+6jkp k0e e- adu the radio stops playing because

  94.21: Which of the following statements about solid conductors in e2fur(2 0pf+*lvhnn3 is3 9dcfz pa7ullectrostatics arhup3d 3 fv *0(zf92c2nfps+a7l luinre 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 of radius R hf-ujxw)8a lp6-cf ,gn el:: eoas positive charge + Q. Which graph best depicts the electric potent e ,) :x -6jflop-8aew:cnlufgial as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of radiusjr. pv czx*j ybyf/r2r3 099 kfa-y+gr R has positive charge + Q. Which graph best depicts zfc* g. /py r3y -2javryfrk0j9+xrb 9the electric field as a function of r, the distance from the center of the sphere?

  96.21: Two isolated conducting sphers+vq0b+7y:-np4w n3eho;py m)t ou v aes (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 connected by a conducting wire. Charge will flow in the 3nuppo )+ ;oa-esv y4wyq0th7+nbvm :wire until:

  17.46 Two copper spheres X and Y, withtiq0/ tj-:ht n 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 located at pointsx uf;ez.u5k-or40 xac0pt vz6 4 and 6 on the positive x axis. Which of the following gr5kef .4t6 0ux;x-upr azozcv 0aphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere38x4tzdonenzl 4r, 5l p *.uux d5f:nlg9x.ez 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 l3x5pxl9*4uz4non,e5r d .l edn:tz. 8 zx gfuthe 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 rw9ij)h)bv-b:/bfr0h o :o wo 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 figure? The sphere has radius R=3a and the point of intereih bow)hjbr0vf-:o : rb/9)wost 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 -cf7m+d)9mf/ sxlzbp 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 =lmbc+)p/m7fzdfs9 - x 0 as r → ∞ , the potential at position r =2 a from the center of the spheres is:

  04.50: A solid spherical conducting jopoib49) r,zshell has inner radius a and outer radius 2a. At the center of the shell is located a point charge +Q,i)4o rb9pzoj. What 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 tyb79oyxd9a;. mp d)nm he following is the correct relationship for the electric potential at the points labeleo9 )n9m .d dapm7yxy;bd 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 c:1px:p;b8tp p mw92b9m7+i u kxhw6 emhtck1mharge +Q and radius R. It 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 + 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 innerk;2 wpwx:pm9eb 9:+tcmb 1 ip x8ptu6hmmk1h7 sphere.

  15.48: Two concentric charged conducting shells are in frew8zp/(2en rj ;v6ed hre space. The outer shell has inner radius 2a and outer radius 3a. The inner she/ ndhz2; rwr(6j8ep vell 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 phyhmzj)n jj:0o 6sical phenomena. Which one of the followingj:hno 60)z mjj statements is correct?