The switch in Figure has been open for a long time and is closed at t = 0. The circuit parameters are R = 50 Ω, L = 250 mH, C = 0.5 μF, and VA = 1000 V.
(a) Find the circuit differential equation in iL(t) and the initial conditions iL(0) and vC(0).
(b) Use Laplace transforms to solve for iL(t) for t ≥ 0.