MDCAT Physics MCQ #68

Why does the RMS value of AC equal √½ times the peak value?

MDCAT Physics MCQ #68

  1. Question 1

    Q1. Why does the RMS value of AC equal √½ times the peak value?

    • A) It matches the heating effect of equivalent DC.
    • B) It accounts for average power over a cycle.
    • C) It simplifies calculations for inductive reactance.
    • D) It ensures zero net charge transfer.

    Answer: It matches the heating effect of equivalent DC.

    Explanation: RMS equals DC that delivers same power. D is incorrect because AC has zero net charge per cycle.