Lag1989 problem number 19.12

Lag1989 problem number 19.12

The oscillatory circuit consists of a coil with inductance L = 100 mH and a capacitor with a capacity of C = 100 nF. How much time t passes from the moment when the capacitor is completely discharged to the moment when its energy is twice the energy of the coil? Active resistance coil neglected.

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