1. In a circuit of figure, Vs = 10 cos(ωt) power drawn by the 2Ω resistor is 4 watts. The power factor is





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  • By: guest on 01 Jun 2017 11.42 pm
    Vs = 10 cos ωt, Let I be the current, then P = I2 R I is the rms current. Prms = I2 R 4 I2 = 4 I = 2A. Total power drawn = Vm Im cos θ 10 x 2 cos θ = 10 cos θ Total power cannot be determine until value of R = 12 Ω is given.
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