1. What are the energy densities associated with the electric and magnetic fields?
2. An infinite plane sheet lying in the plane carries a current of uniform density
Find the currents crossing the following straight lines:
(a) from (0, 0, 0) to (0, 2, 0);
(b) from (0, 0, 0) to (2, 0, 0);
(c) from (0, 0, 0) to (2, 2, 0).