A coil of inductance 300 mH and resistance 2 Ω is connected to a source of voltage 2V. The current reaches half of its steady state value in

Given: A coil of inductance 300 mH, resistance 2 Ω, source of voltage 2V.

Then, during the growth of charge in an inductance. We use

Option B is correct, The current reaches half of its steady state value is 0.1s.