1.

A sinusoidally alternating current of frequency 60 Hz has a maximum value of 15 A. Find the value of current after 1/200 second

Answer»

Given maximum current Imax = 15 A

frequency of alternating current = 60 Hz

t = 1/200 sec

We know that I = Imax sin 2π ft

I = 15 sin 2π x 60 x t

I = 15 sin 120π x 1/200

I = 15 sin 3π/5

I = 15 x 0.95

I = 14.25 A



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