Sinusoidal current i = 10sin(942.5t): find frequency, period, and time to 8A

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salvatorecaine
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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.
 
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Can you show us what you have done?

Do you know the standard form for a sin function?
 
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.
 
salvatorecaine said:
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.