NEET Physics AC Voltage MCQ Question
Which of the following statements about AC voltage in a circuit is correct?
In a purely inductive circuit, the power factor cos φ is zero.
The power factor increases with the increase of inductive reactance.
The average power in an AC circuit is always positive regardless of the phase relationship.
Phasors can be used to represent AC voltage and current relationships effectively.
Correct Answer
Detailed Explanation
In a purely inductive circuit, cos φ is indeed zero, indicating that no power is dissipated despite current flow, making it a wattless current. This aligns with the information provided in the NCERT context regarding AC voltage.
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