a) If the rms voltage across the generator is 159 V, calculate the average power

Question

a) If the rms voltage across the generator is 159 V, calculate the average power P(at 446 Hz) being used by the circuit.

P(at 446 Hz) =

b)If the rms voltage across the generator is 159 V when at resonance, calculate the average power Pres being used by the circuit.

Pres =

If the rms voltage across the generator is 159 V, calculate the average power P(at 446 Hz) being used by the circuit. P(at 446 Hz) = If the rms voltage across the generator is 159 V when at resonance, calculate the average power Pres being used by the circuit. Pres =

Explanation / Answer

power at 446 HZ is

P = V^2 / Z

where Z = sqrt ( R^2 + ( XL-Xc) )

where XL = 2*pi * 446 * inductor value

Xc = 1 / (2*pi*446* capcitor value)

b)

at resonance XL =Xc

Z = R ...........from above relation

hence power is p = V^2 / R

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