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# What is the rms value of voltage?

The RMS value of a fluctuating voltage or current is its effective value. The corresponding steady DC constant value produces the same effect.

# How does RMS voltage become calculated?

For a sinusoidal waveform, the RMS voltage VRMS is calculated by multiplying the peak voltage value by 0.7071, which is equal to one divided by the square root of two.

# What is the difference between RMS and peak voltage?

Peak values can be computed using the above formula’s RMS values, which meansÂ  VP = VRMS Ã— âˆš2, provided the source is a pure sine wave. Thus, the peak value of the mains voltageÂ is approximately 120 Ã— âˆš2, or approximately 170 volts. The peak-to-peak voltage is around 340 volts.

# Formula:

## RMS Value determined from Peak Value: VP

VRMS = 0.7071 x VP

## RMS Value determined from Peak to Peak Value: VPP

VRMS = 0.35355 x VPP

## RMS Value determined from Average Voltage Value: VAV

VRMS = 1.11 x VAV

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