Question

The equation of alternating current is given by i = 50sin(400t + ) a . Find the frequency and rms value of current

Answer 1

i=50sin(400t + )

comparing from equation i=Isin(wt +)

I rms= 50/1.414= 35.36 amp

w= 2πf = 400

so frequency f is same for both cycle of the signal. f = 50hz