The capacitor of capacitance C can be charged (with the help of a resistance R) by a voltage source V, by closing switch `S_1` while keeping switch `S_2` open. The capacitor can be connected in series with an inductor ‘L’ by closing switch `S_2` and opening `S_1`

After the capacitor gets fully charged, `S_1` is opened and `S_2` is closed so that the inductor is connected in series with the capacitor. Then,

Options

A. at t = 0, energy stored in the circuit is purely in the form of magnetic energy
B. at any time t `gt` 0, current in the circuit is in the same direction.
C. at t `gt` 0, there is no exchange of energy between the inductor and capacitor
D. at any time t `gt` 0, instantaneous current in the circuit may `Vsqrt(C/L)`

Answer

D