An inductance coil has a resistance of 100 . When are a.c. signal of frequency 100 Hzis applied to the coil, the voltage leads the current by 45^ . The inductance of the coil in henry is [ 45^ = 45^ = 1 2 ]

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Correct answer: D. 1 2

The phase angle in an LR circuit is given by, since =45^ , = X_L X_R =1 Resistance of inductive coil X_L=X_R=100 Thus, inductance of coil L= X_L 2 f L= 100 2 100 ~s ⁻¹ = 1 2 H

An inductance coil has a resistance of 100 . When are a.c. signal of frequency 100 Hzis applied to the coil, the voltage leads the current by 45^ . The inductance of the coil in henry is [ 45^ = 45^ = 1 2 ]

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