Question

The equation for an alternating current is given by I-77 sin 314 t . Find the frequency of current.............

Answer 1

Answer:

50 Hz

Explanation:

i =77sin314t

the general eqn of current in ac is,

i=io sin 2πft

thus, comparing with given eqn,

2πf=314

2*3.14f = 314

f = 50 Hz

Answer 2

Answer:

See the picture which is attached to this answer

Explanation:

I actually dont know. I found this on my book but it not wrong