Question: An R-C circuit has a time constant RC. (a) If the circuit is discharging, how long will it take for its stored energy to be

An R-C circuit has a time constant RC.
(a) If the circuit is discharging, how long will it take for its stored energy to be reduced to 1/e of its initial value?
(b) If it is charging, how long will it take for the stored energy to reach 1/e of its maximum value?

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