The power in an A.C. circuit is given as P = VrmsI rms cosδ. The power factor at the resonance frequency of a series L—C-R circuit will be ..........,choose the correct option from the given options.
(A) zero
(B) 1
(C) 1/2
(D) 1/√2
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In an AC circuit, the voltage and current waveforms are sinusoidal so their amplitudes are always showing signs of change after some time.
Since we realize that power is voltage times the present (P = V*I), most extreme power will happen when the two voltage and current wave forms are agreed with each other.
That is, their pinnacles and zero hybrid focuses happen in the meantime.
At the point when this happens the two wave forms are said to be "in-stage".
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