Q7.12 An circuit contains a inductor and a capacitor withan initial charge of . The resistance of the circuit is negligible. Let the instant the circuit is closed be .
( c) At what time is the energy stored
(i) completely electrical (i.e., stored in the capacitor)?
at any instant, the charge on the capacitor is:
Where time period :
Now, when the total energy is purely electrical, we can say that
this is possible when
Hence Total energy will be purely electrical(stored in a capacitor) at