A solid conducting sphere of radius 2.00 cm has a charge of 8.00 C. A conducting spherical

Question:

A solid conducting sphere of radius 2.00 cm has a charge of 8.00 μC. A conducting spherical shell of inner radius 4.00cm and outer radius 5.00cm is concentric with the solid sphere and has a charge of − 4.00 μC. Find the electric ﬁeld at (a) r = 1.00 cm, (b) r