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With increase in frequency of an A.C. supply, the inductive reactance

1. decreases
2. increases directly with frequency
3. increases as square of frequency
4. decreases inversely with frequency

Correct answer: increases directly with frequency

Solution

Inductive reactance is given by XL = 2πfL, so it is directly proportional to frequency. Therefore, increasing the AC frequency increases the inductive reactance linearly.

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