Red Seal Electrician Practice
Meters and troubleshootingQuestion 1179 of 1506

For a square wave, how do the RMS and average values compare?

  1. RMS is 0.707 times the average.
  2. RMS is 1.11 times the average.
  3. Average is twice the RMS.
  4. They are identical.
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Correct answer: They are identical.

The square wave has the same magnitude all the time.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 12.1: AC Voltmeters and Ammeters

Practice meters and troubleshooting

Questions last reviewed: 18 October 2026