Solving Physics Question: Frequency & Period, Time to Reach 8A

[salvatorecaine]

Here is a practical but slightly advanced physics question. i just need some help solving it.Well here goes

The instantaneous value, i, of a sinusoidal current may be
represented by the equation

i = 10sin 942.5tamperes

(a) Determine the frequency and the period of the waveform.

(b) Determine the time taken from t = 0 for the current to reach a value of 8 amperes.

 

[Integral]

Can you show us what you have done?

Do you know the standard form for a sin function?

 

[salvatorecaine]

I haven't started working on it, i was hoping someone could give me a hand.
If its any help it under the Topic Alternating Currents.

 

[Reshma]

I haven't started working on it, i was hoping someone could give me a hand.
If its any help it under the Topic Alternating Currents.

You should determine what the parameters given in

i = 10sin 942.5tamperes

stand for. Then you can easily find the answers you are looking for.