05.20: A portable radio that is playing is plq a46 7-xdmo5gh6ohik 42rxz-arb( f saced inside a screen cage as shown. When inside the cage the radio bmo( xrrx2aqh- d4hs if46-zka56o7g stops playing because

  94.21: Which of the following statements about solid connv o)i0o;eph6ut qde*/ fs )+eau+v)oductors in electrostatics ++6;uqvo*i)uea ndo)ot)e hf pv/s0eare 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 has positive charge + Q. Wjdoa txqumunaz7,n* 69- 72cthich graph best depicts the etqtda7u2 nn *-j,7mcauz6o9 xlectric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of radius R hyi-g7ps bvcsz/5b1/m- qna m 8as positive charge + Q. Which graph best depic/7psgm- qz i-n acs5bv m/1y8bts the 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 chargvd:ku:9d p l.ge + 6.0 nC and S2 of radius 0.040 m and initial charge +vd9lpgd.:k:u 2.0 nC) are connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y,uajxn2bk *sk1 5c4 3oo 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 positive3b c;e17hrzba;dp9bsa w d24x charges located at points 4 and 6 on the positive x axis. Which of the following graphs best rbe dxp1; wshz bca 32dr47b9;aepresent the electrical potential along the axis?

  03.50: A solid uncharged conducting sphere has radiusl31ul kxf5m7qs o 8;ha 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 mul 3 xfqlah75k; so81the 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 pf:82yx nup0h3v(jmw in static equilibrium is isolated in deep space with a net excess charge +Q on it. What is the electric potential (assuming V(r → ∞) 28hp0v(xp :ujmy wn3f = 0 ) 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 raf1) uf rdlm39odius 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 3 1df 9)rlofmua from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and outer radius gryj354* xyuf2a. 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 inner and outer surfac jf*3yr45xg yues of the shell to be exactly equal?

  05.45: A spherical conducting shell has a net chqq(emh -551* twk;v cm8o sdybarge +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 distance R from point A, and point C is a distance R from point B outsideq;wy85mck- b1mhv d (otqs 5*e the sphere. As r goes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and radius R. It iocr4,4 fe1z ifi2c pk;s 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 ie;rzipf44,2kfo 1cclabeled 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 outere,bfkz o0 j,)s shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is known that the electric potential ate f0jo,,z)s kb $r=3a$ 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 attemptd 5*lvpo+e:t 0x/x fl4nt zun7 to describe physical pheulzn v/dptnte7*x+f05: x o4lnomena. Which one of the following statements is correct?