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Module 3. Electrical fundamentals

If an AC sine wave has an RMS value of 5V its peak value is

  • 6.37 V.
  • 7.07 V.
  • 14.14 V.

Explanation

For a sinusoidal AC waveform the peak value equals the RMS value multiplied by the square root of 2. So 5 V x 1.414 gives roughly 7.07 V. The 6.37 V option is the figure you would get from the average-rectified relationship, not the peak, which is why it is wrong.

Smyjer asking:

Peak value is 1.414 the effective value

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