In North America, power companies distribute at 120 V, 60 Hz. The voltage 120 refers to

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In North America, power companies distribute at 120 V, 60 Hz. The voltage 120 refers to:

  1. Average voltage
  2. Peak to peak value
  3. Peak voltage
  4. R.M.S Voltage

Correct answer: 4. R.M.S Voltage

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