05.20: A portable radio that is playing is placed inside nubhj jw5k )-4i5s7y7hn3 exua screen cage as shown. When inside the cage the rsy5hhxuj5i n7k4 )7 ejbw u-3nadio stops playing because

  94.21: Which of the following statements about solid conductors in electrostac kjmxywl351b 4v k+of r(/(ewticse(ro+l vmk5(w1 w4k3 jc bfyx/ 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 of radius R has positive charge + Q. am);8wl7gfe/ ,p.attqk hzeqy ** iv: Which graph best depicts the electric potential as a function of r, the distance from thlpi*yva: t ;htfk)z*7egq. /8q ,am ewe center of the sphere?

  96.36: An isolated conducting sphere of radius R has:lls: vxy66v6lar cyd5nx4 ds6g0nm:wai70 f positive charge + Q. Which graph best depicts the electric field as a function 6vl r6mg:a0l6ndx7ad :xl5 ncs:yvf 04ysiw6 of r, the distance from the center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 li (9frm2-tnx m and initial charge + 6.0 nC and S2 of radius 0.040 m and initial charge + 2.0 nC) are connected by a conductin-ntmi 9lf2 x(rg wire. Charge will flow in the wire until:

  17.46 Two copper spheres X and Y, with different r5ol6jx vvoqfq jo yq+w75g), 3adii ($R_x>R_y$) 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 cha3.r:inx e2now59oh a erges located at points 4 and 6 on the pose.n a29eo53xiwho:n ritive x axis. Which of the following graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting s:a6 ne:q+k +/jlcei y y.fus*cphere 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 the magnitude of the electric field at the position r = 4a from the center of the spheres as marked in t+ei:acyl u/.6 ne: yk +*qcjfshe figure by P?

  11.46: A hollow conductinga y*) /ihgsj5nw7cy- us8zib+u;m fs + 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 thz - mshcnf;bu+ juy7y+gssia*w/ 8)i5e 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 r4 tuxag2g gfjzvh9yu41+er1/ adius 3a contains a hollowed spherical region of radius a. A point charge +Q is placed at the common center of th4u x4a ufzgt+vye 19 jggh/r21e spheres. Taking V = 0 as r → ∞ , the potential at position r =2 a from the center of the spheres is:

  04.50: A solid spheric,b.l ;d7bgfb0 okt f(lal conducting 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 inner and outer surfaces of the shell to be exactlyf0 ld(k,tbl7 bb.fog; equal?

  05.45: A spherical conducting shell has a net charge +Q placed on it5oly om3 r x36-qsdgb;. Which of the following is the correct relationship for the electric potential at the points labeled A, B, and C? Point A is r6qm;b 3o g yod3s5-xlat 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 charge +qdvdri * 42dy1Q 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 inner sphere.di4 1d2vrdq y*

  15.48: Two concentric charged conducting shells are in freec,ve/zoi */nb6mkx ra*lslh t53jd;0 space. The outer shell has inner radius 2a and outer radius 3a. The inz;ier*nkv0c,b t o /6x sl3adm5* /hjlner 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 descrt7a m:ew7r iq(qt e1:eibe physical phenomena. Which one of the following wi 17r:( q7tqe meet:astatements is correct?