Physics-Power in AC Circuits
NEET Physics Power in AC Circuits MCQ Question
Type: MCQ-fact-Easy-Class 12
What is the expression for average power in an AC circuit in terms of rms voltage and current?
A
P = V I cos φ
B
P = V I sin φ
C
P = V^2 / R
D
P = I^2 R
Correct Answer
Option A
Detailed Explanation
The average power in an AC circuit is given by the expression P = V I cos φ, where V is the rms voltage, I is the rms current, and φ is the phase difference, as stated in the NCERT context.
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