The Inductor L which has zero initial charges at t = 0+ acts as a
Right Answer is:
A current source
At t=0− when a circuit is at a steady state, an inductor acts as a short circuit. Thus at a steady-state at t=0− we replace all inductors with short circuits and capacitors by open circuits in the circuit.
At t = 0+ the inductor current cannot change in going from t=0− to t = 0+, we replace the inductors with current sources whose values are the currents at t=0−.