Electricity & Magnetism

RMS Voltage/Current

RMS (root mean square) value of sinusoidal AC voltage or current.

Variables

V_rms
RMS voltage
Root mean square voltage
V
V_peak
Peak voltage
Maximum voltage
V

Derivation

V_rms = √(⟨V²⟩) = V_peak/√2 for sinusoidal waveform.

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