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yankeekd25
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Homework Statement
When the power factor of RLC circuit is equal to one, the frequency of the voltage source is 3 x 10^3 Hz. The rms value of the voltage source is 139 Volts and at a frequency of 3 x 10^3 Hz, the rms current in the circuit is 37.1 amps. If the inductive reactance at 3 x 10^3 Hz is 47 Ohms, what is the average power of the circuit in Watts at 0.78 times the resonant frequency of the circuit?
Homework Equations
Pav= Irms Vrms cos theta
Irms= I/ rad 2
Vrms= V/rad 2
The Attempt at a Solution
I have no idea where to begin. I keep going in circles. The only thing I know is cos theta=1.
Can someone please help me out with this one?