1. The problem statement, all variables and given/known data 2. Relevant equations I know for RL circuit T = L/R For RC circuit it is RC But how to go ahead for RLC circuit. 3. The attempt at a solution I calculated for RL as 1/4 = 0.25 And RC as 1 Then I added both time constant and got 1.25 Book answer is 0.5. How to solve this? In solved examples they've used RL or RC circuits.