Physics-Power in AC Circuits
NEET Physics Power in AC Circuits MCQ Question
Type: MCQ-numerical-Easy-Class 12
In an AC circuit, the average power dissipated is given by P = VIcosφ. If the rms voltage is 220 V, rms current is 5 A, and the power factor is 0.8, what is the average power dissipated in the circuit?
A
880 W
B
1100 W
C
1760 W
D
2200 W
Correct Answer
Option C
Detailed Explanation
The average power dissipated in an AC circuit is calculated using P = VIcosφ. Substituting the given values: P = 220 V * 5 A * 0.8 = 1760 W.
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