05.20: A portable radio that is playing is placed insif+75uvb 5/iejz kg4 jjde a screen cage as shown. When inside the cage the radio stops playing becajkjbj+55vz /u 4 ifge7use

  94.21: Which of the following statee/w 5r3 a: t7zwqawjx7ments about solid conductors in electrostatics are true? jrx z :7aww75q we/3ta
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 conduk/rt lqxc9 gm,(0rziv m y23lx-vmg./cting sphere of radius R has positive charge + Q. Which graph b0zr,k2// tmr l(.g 3xm vvg9m-iqlcyxest 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 Ry:e-4l b+clgzhp g (m2 has positive charge + Q. Which graph best depicts the electric field as a function of r, th-z 2 e4pg:clb(h+ygl me distance from the center of the sphere?

  96.21: Two isolated conducting.(rv5e z lg *ciwn.*tj spheres (S1 of radius 0.030 m and initial charge + 6.0 nC alr5jg( n. i*tcew*z.v nd S2 of radius 0.040 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 different pv eu*f)sba(q;v: j w4cb5 b5lradii ($R_x>R_y$) 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 shoy(6uvoz+m/pla 8o s0 hxdgb.+ws two identical positive charges located at points 4 and 6 on the positive x axis. Which of the following graphs best represent the electa l/db(+hg0 spm8vyou .z o+x6rical potential along the axis?

  03.50: A solid uncharged conducting sphere has radius 3a contains a holloq8ul;sr2psym 7l ;( i4 hs.ae,(ckpoywed spherical region of radius 2 (o7sm ,pcrs k8;2luyshel(yqap;.i4a. 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 the figure by P?

  11.46: A hollow conducting sphere in staticw ew01 wvg (c(*cui8ig 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 labw 8e*gciw(vigw0 c(1ueled 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 conxc5b0yy0 i9 p3v4j kbaducting 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 x4a0k i yvp5cyjb93b0r → ∞ , the potential at position r =2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has in bn29 tgpmobszav 5eu4 a03q /f+,sd*iner 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 shp0qsavoz25gan,bbtsuf 4 d9+e *i/3mell to be exactly equal?

  05.45: A spherical conductinxx939,., e tiac (wjgaqzn1 dwg 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 distance R from point A, and point C is a distance R from point B outside the sphere. As r g9 9x, 1cw .jd(ni3x,a wetqgazoes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and radius1t .5*k5psj/btea3 ghmq7db3ol gr4w R. It is surrounded by a solid spherical shell with charge − Q, inner radius 2R, and outer radius 3R. Which ofrm gdbsl 3*hta45eq/bj pw1ogk t7 3.5 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 out9 o 00hit3yb3b ..ckfljtu+ zks) t scgra-e0,er shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is knjy,0 3. bskc+s l0 0rb tzcka)9g-hu.3tei ftoown 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 stx0f .cdcng4i28r*gu fatements presented below that attempt to describe physical phenomena. if 48 g*x 2rcu0.dcnfgWhich one of the following statements is correct?