Lightning strikes a lossy dielectric sphere--e 1.2eo, ơ-: 10 (s/m)- of radius 0.1 (m) at time t-0, depositing uniformly in the sphere a total charge 1 (mc). determine, for all t, a) the electric field intensity both inside and outside the sphere, b) the current density in the sphere. p4-4 refer to problem p.4-3. a) calculate the time it takes for the charge density in the sphere to diminish to 1% of its initial value. b) calculate the change in the electrostatic energy stored in the sphere as the charge density diminishes from the initial value to 1% of its value. what happens to this energy? determine the electrostatic energy stored in the space outside the sphere. does this energy change with time?