Which multiplier determines the peak voltage?

The correct answer relates to the calculation of peak voltage in AC systems, specifically when converting from RMS (Root Mean Square) voltage to peak voltage. The RMS voltage is a way of expressing the effective value of an AC voltage, but when we want to find the peak voltage—the maximum instantaneous value of voltage—we must apply the appropriate multiplier.

For a sinusoidal waveform, the correct multiplier used to convert RMS voltage to peak voltage is approximately 1.41. This arises from the relationship between RMS and peak values for sinusoidal waveforms, where the peak voltage is equal to the RMS voltage multiplied by the square root of 2 (approximately 1.414). Hence, when selecting the multiplier for determining peak voltage in this context, 1.41 is the accurate figure to use, aligning with the mathematical principles of AC electricity. This is significant in refrigeration and air conditioning mechanics, where understanding power measurements and component ratings based on peak voltages is essential for system design and troubleshooting.