RMS to Peak Voltage Formula:
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RMS (Root Mean Square) voltage represents the equivalent DC voltage that would deliver the same power to a load. The peak voltage is the maximum voltage in an AC waveform. This calculator converts between these two important electrical measurements.
The calculator uses the formula:
Where:
Explanation: For a pure sine wave, the peak voltage is exactly √2 times the RMS voltage. This relationship is fundamental in AC circuit analysis.
Details: Understanding the relationship between RMS and peak voltage is crucial for designing and analyzing AC circuits, selecting appropriate components, and ensuring electrical safety.
Tips: Enter the RMS voltage value in volts. The value must be positive. The calculator will compute the corresponding peak voltage.
Q1: Why is RMS voltage used instead of peak voltage?
A: RMS voltage is used because it represents the equivalent DC voltage that would deliver the same power to a load, making it more useful for power calculations.
Q2: Does this formula work for all waveforms?
A: No, this specific formula (V_peak = V_rms × √2) applies only to pure sine waves. Other waveforms have different relationships between RMS and peak values.
Q3: What is the peak-to-peak voltage?
A: Peak-to-peak voltage is the difference between the maximum positive and maximum negative peaks of a waveform. For a sine wave, it's twice the peak voltage.
Q4: How is RMS voltage measured?
A: Most multimeters measure RMS voltage directly. True RMS meters can accurately measure non-sinusoidal waveforms, while average-responding meters are calibrated for sine waves.
Q5: What are typical RMS voltages in household systems?
A: In North America, standard household voltage is 120V RMS (≈170V peak). In Europe and many other regions, it's 230V RMS (≈325V peak).