Electronics & Circuits
Intermediate

RMS Voltage

Effective value of a sinusoidal voltage.

Formula

Vrms=Vpeak2V_{rms} = \frac{V_{peak}}{\sqrt{2}}

Variables

V_{peak}Peak voltage

Example

170V peak ⇒ 120V rms

Did You Know?

Household "120 volts" is an RMS value; the actual peak voltage swings to about 170 volts.

rmsacvoltage