Question

An alternating current is represented by I = 30 sin 314t (in SI unit) find the maximum value of current and time period? PLEASE SOLVE IT FAST I REALLY NEED THE ANSWER!?

Answer 1

Comparing with I = Im Sin(wt)
Max current is 30A
w = 2π/T = 314 or T = 2*3.14/314 = 0.02s
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Answer 2

take a look at the method.
You just have to remember basic formulas and equations and then you will be able to solve these kind of questions easily.