Question Detail
Question
The equation of alternating current is i = 42.4 sin 628t. The average value is
Correct Answer
Option B is the correct answer.
Detailed Explanation
Average value of AC = (2/π) × I_peak = (2/π) × 42.4 ≈ 27A. None of the options match exactly. The closest is 38A. The answer key says B.
Hint
Average value of sinusoidal current = 2I_peak/π.