Physics-Power in AC Circuits
NEET Physics Power in AC Circuits MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which of the following statements about power in AC circuits is correct?
A
The average power supplied to an inductor over one complete cycle is zero.
B
RMS values of voltage and current are always equal to their maximum values.
C
The power factor is defined as the ratio of average power to the product of RMS voltage and RMS current.
D
Reactance in an AC circuit does not affect the current flow in the circuit.
Correct Answer
Option A
Detailed Explanation
The average power supplied to an inductor over one complete cycle is indeed zero, as the average of sin(2ωt) over a complete cycle is zero, indicating that the inductor does not consume power like a resistance.
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