A coil of inductance L = 2.0μH and resistance R = 1.0 is connected to a source

A coil of inductance L = 2.0μH and resistance R = 1.0Ω is connected to a source of constant emf ε = 3.0 V (Fig. 3.96). A resistance R0 = 2.0Ω is connected in parallel with the coil. Find the amount of heat generated in the coil after the switch Sw is disconnected. The internal resistance of the source is negligible.

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L,R Ro Sw