Question

T of the given the current wave i(t) = 5 cos (400t − 120°).

Answer 1

Average value of 5sin100ωt is zero.

Average value of 5sin100ωt is zero. But average value of 5A (=constant current) is 5A.

Average value of 5sin100ωt is zero. But average value of 5A (=constant current) is 5A. Hence, average value of total given function is 5A.