An LC circuit contains a 20 mH inductor and a `50muF` capacitor with an initial charge of 10 mc. The resistance of the circuit is negligible. At the instant the circuit is closed be t = 0. At what time is the energy stored compeletly magnetic.
Options:
(a) t = 0
(b) t = 1.54 ms
(c) t = 3.14 ms
(d) t = 6.28 ms