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Time constant is L/R. Given, L = 40H & R = 8Ω. ∴ τ = 40/8 = 5 sec.

1. L = 40H
2. R = 8Ω
3. τ = 40/8 = 5 sec.
4. Time constant is L/R

Correct answer: Time constant is L/R

Solution

The time constant (τ) for an LR circuit is defined as the ratio of inductance (L) to resistance (R), which is τ = L/R. This matches the statement in option D.

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