A light bulb is connected to a 120.0-V wall socket. The current in the bulb depends on the time t according to the relation I = (0.669 A) sin [(491 Hz)t].
What is the frequency of the alternating current?
How do I use the given value for I?? (since it includes time, t)
The Attempt at a Solution
I know that V=Vo * sin2pi * freq * time