1990 E&M 1\ A sphere of radius

R

is surrounded by a concentric spherical shell of inner radius

2R

and outer radius

3R

, as shown above. The inner sphere is an insulator containing a net charge

+Q

distributed uniformly throughout its volume. The spherical shell is a conductor containing a net charge

+q

, different from

+Q

.\ Use Gauss's law to determine the electric field for the following values for

r

, the distance from the center of the insulator.\ (a)

2R\ Determine the surface charge density (charge per unit area) on\ (d) the inside surface of the conducting shell;\ (e) the outside surface of the conducting shell.R thaight this helogn would mean exdudinc\ (c) 2R\ Determine the surface charge density (charge per unit area) on\ (d) the inside surface of the conducting shell;\ (e) the outside surface of the conducting shell.0\ (b) R thaight this helogn would mean exdudinc\ (c) 2R\ Determine the surface charge density (charge per unit area) on\ (d) the inside surface of the conducting shell;\ (e) the outside surface of the conducting shell.

1990 E\&M 1 1. A sphere of radius R is surrounded by a concentric spherical shell of inner radius 2R and outer radius 3R, as shown above. The inner sphere is an insulator containing a net charge +Q distributed uniformly throughout its volume. The spherical shell is a conductor containing a net charge +q, different from +Q. Use Gauss's law to determine the electric field for the following values for r, the distance from the center of the insulator. (a) 0