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What are RMS and peak values of a sinusoidal AC voltage source?

April 26, 2017AC peak RMS sinusoidal source values voltage

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What are RMS and peak values of a sinusoidal AC voltage source?

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As explained above, in a sine wave, the instantaneous values of AC voltage (Volt, V) and current (Ampere, A) vary with time. Two values are commonly used Root Mean Square (RMS) value and peak value. For simplicity, RMS value can be considered as an average value. Mathematically, Peak Value = 1.414 x RMS value. For example, the 120 VAC, 60 Hz. mains / utility power is the RMS value. The peak value corresponding to this is = 1.414 x 120 = 170V.