05.20: A portable radio that is playing isw0 xmj- x5yxm5 placed inside a screen cage as shown. When inside the cage the x-5wxyjxm 0m5radio stops playing because

  94.21: Which of the following statements about solid conductors in eq++m.yl:a kzr4+bss(j 7ktqljm* x,electrostatics are true+j l:k(+4t *s s +bye., alqkxmrm7qjz?
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 s,r ve/ktyn: f4phere of radius R has positive charge + Q. Which graph best depicts the electric potential as a function of r, the distance from the cente ye/tk:f4,r vnr of the sphere?

  96.36: An isolated conducting sphere of rad8 de6i-ay7g,m2s1ivppbj 2o j ius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the distance from thp6y2,8ia7epvj 21si mj gob d-e center of the sphere?

  96.21: Two isolated conducting spheres (S1 of radius 0.030 modya o35*f4ab and initial charge + 6.0 nC and o 5dao3fy*b4a 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 sphe :/8iqzyg8kbx res X and Y, 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 positive charges lw/6z v f2:7,sqxt lf7 ohfx0e+*sovsjocated at points 4 and 6 on the positive x:7z svjwleq*oshf f26 /ot 7+fx0sv, x axis. Which of the following graphs best represent the electrical potential along the axis?

  03.50: A solid uncharged conducting spk7 tc (lmwk;t jfy0vv)4uet.(here 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 avt(7ufj v4 .;mclt)tey(0kwk s marked in the figure by P?

  11.46: A hollow conducting sphere in 74dy jddv.x )c 9u.rld 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 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 anj9ddv..u )cx dd4ry7 lgle of $60^{\circ}$with respect to the +x-axis.

  02.49: A solid, uncharged conducting sphere oq9 myb 2be1o6qf 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 posi 62mbyqbq 9eo1tion r =2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a and outer r6m1g1e m j1puoadius 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 og 16mojmue 11puter surfaces of the shell to be exactly equal?

  05.45: A spherical conducting shelw 4ole5 bdkvlg)3v:p)l has a net charge +Q placed on it. Which of the following is the correct relationship for thdlk:3)ew 4 gp v)vlo5be 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 goes to infinity, V = 0.

  07.42: A solid spherical conductor has charge +Q and radius R. It is surroundedc :f )c 7r9ylh((;hhx q2ic5rqrrsfq+ 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 theslir(h) fr +rr(s79q cfch25 :cyh q;qxe 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 j*b5gul b/r-b free space. The outer shell has inner radulrbg bb -5*j/ius 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 belx;0hie(2 lc weow that attempt to describe physical phenomena. Which one of the following statem ;we2c(h0ilx eents is correct?