Time constant of an inductive circuit

Here is a brief explanation of each option:

• Option A: Increases with increase of inductance and decrease of resistance. This is the correct answer, as explained above.
• Option B: Increases with the increase of inductance and the increase of resistance. This is incorrect, as the time constant will decrease if the resistance increases.
• Option C: Increases with the decrease of inductance and decrease of resistance. This is incorrect, as the time constant will not change if the inductance decreases.
• Option D: Increases with decrease of inductance and increase of resistance. This is incorrect, as the time constant will increase if the inductance decreases.