Physics-Power in AC Circuits
NEET Physics Power in AC Circuits MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following combinations about average power in AC circuits is correct?
A
Average power depends on rms values of voltage and current, and the power factor.
B
Average power in AC circuits is always equal to the peak power.
C
Average power does not depend on the phase difference between voltage and current.
D
Average power is calculated using only peak values of voltage and current.
Correct Answer
Option A
Detailed Explanation
Average power in an AC circuit is given by P = VIcosφ, where V and I are rms values and cosφ is the power factor. This shows that average power does depend on the rms values and the power factor, as stated in the NCERT context.
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