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4 An inductance coi l has a reactance of 100  . When an AC signal of frequency 1000 Hz is applied to the coil, the applied voltage leads the current by 45°. The self - inductance of the coil is :

1. 1.1 × 10 – 2 H
2. 1.1 × 10 – 1 H
3. 5.5 × 10 – 5 H
4. 6.7 × 10 – 7 H

Correct answer: 1.1 × 10 – 2 H

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