An LC circuit a $20\;mH$ inductor and a $50 \mu F$ capacitor with an initial charge of $10\;mc$ The resistance of the circuit is negligible. Let the instant the circuit is closed be $t=0$, What is the total energy stored initially ? Is it conserved during the oscillations ?

Question

$\begin{array}{1 1} 1\;J \\ 10\;J \\ 0.1\;J \\ 100\;J \end{array} $