05.20: A portable radio that is playing is placed inside a swg:m5 v/tkh b4upv-5mcreen cage as shown. When inside the cage the radio stovwpmgm-5 4ukb th v:/5ps playing because

  94.21: Which of the following statements abouoh-ko f0q tnxhw8zp4q-(d -/p lj*zb1t solid conductors in electrostatics z(bxk-q zp* 0--lo8 opq4hhjfnwd1/ tare 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 radi87: plj4yc uv dvouv+ (2qp8rius R has positive charge + Q. Which graph best dep4p8(pvjrcu vq vy:i2 ul8+d 7oicts the electric potential as a function of r, the distance from the center of the sphere?

  96.36: An isolated conducting sphere of rs4 w(,bqmzf)p ogno*:adius R has positive charge + Q. Which graph best depicts the electric field as a function of r, the distance from the center of the spherezoqm,w f(:b)*np 4os g?

  96.21: Two isolated conducting spheres (S1 ofaft) ,xzjl2 dso)5juzo65.f p radius 0.030 m and initial charge + 6.0 nC and S2 of radius 0.040 m and initidjl.xzf)5tspo ,z a f)u j652oal charge + 2.0 nC) are connected by a conducting wire. Charge will flow in the wire until:

  17.46 Two copper spheretu j-0tluy1 w ze;,4zas 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 shotd ,tj j6dpx,0ws two identical positive charges located at points 4 and 6 on the positive x axis. Which of the following gr,, jjxdtt 60dpaphs best represent the electrical potential along the axis?

  03.50: A solid uncharge)e;m6/um3w2sx c j enq(wbp e/d conducting sphere 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 fiesqj;6 me)nw32 pebm/we/cu(xld at the position r = 4a from the center of the spheres as marked in the figure by P?

  11.46: A hollow conductingyfm 0n)tw(x,u*(h0vwsut 218axb kj s 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 the position labeled P shown in the interior of the figure? 2h 80*1wut(( astxk)jy mv0bunf,w sx 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 s*cu(qu vbi*,wn;ji v69dq;v9 xe,my7,sb onkphere 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 r → ∞ , the potential at position r sx7 vwi; b9udq *6 ,qcu9nkejinmv*;vob(, y,=2 a from the center of the spheres is:

  04.50: A solid spherical conducting shell has inner radius a ande4do nh(u. ;)efvm6x a 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 shel;ef6o.n4hv e( d)xa uml to be exactly equal?

  05.45: A spherical conducting shell h yrg.*n./mz afe m;+vnas a net charge +Q placed on it. Which of the following is the correct relationship for the electric potential at the points la ;n+.mazremf.*g nv y/beled 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 conducto0oi*cv dt:q s2or9: eur has charge +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. Point09:rco: suetoi2*vd q 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. The8t*x:rn8lh,q nho y7a outer shell has inner radius 2a and outer radius 3a. The inner shell has radius a. It is known that the ele7ta 8hqnnor*hy,8x l: ctric 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 zg6k7h/yx0 9 fe6iekdthat attempt to describe physical phe7zk gi e6dx9ekf y0/6hnomena. Which one of the following statements is correct?