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Examveda

A 1.5 kΩ resistor and a coil with a 2.2 kΩ inductive reactance are in series across an 18 V ac source. The power factor is

A. 564

B. 0.564

C. 6.76

D. 55.7

Answer: Option B


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Comments ( 3 )

  1. Engr Farman
    Engr Farman :
    3 years ago

    P.f= R/IV

  2. Engr Farman
    Engr Farman :
    3 years ago

    p.f = R/XL

  3. Ayomide Olarenwaju
    Ayomide Olarenwaju :
    5 years ago

    |z| = sqrt(1500^2+2200^2) = 2663

    Angle = inverse tan(22001500) = 55.7

    Power Factor = Cos(55.7) = 0.564

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