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A circuit has V = 200 V rms, I = 2 A rms and power factor 0.5. Average power is:
A400 W
B100 W
C200 W
D800 W
Answer & Solution
Correct answer: C. 200 W
P = V I cos(phi) = 200 x 2 x 0.5 = 200 W.
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