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Question 20216
JEE Physics · Medium

Electromagnetic Induction and Alternating Current: Power in AC — Calculation MCQ

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Power in AC — CalculationMediumQuestion 20216

Question

An AC circuit has V_rms = 200 V, I_rms = 4 A, and power factor 0.8. Average power is:
  1. A
    800 W
  2. B
    640 W
    Correct
  3. C
    1000 W
  4. D
    160 W

Correct answer

640 W

Explanation

P = V_rms × I_rms × cosφ = 200 × 4 × 0.8 = 640 W.

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