Waveform Distortion

AC Voltage and Current are, unless stated to the contrary, measured in terms of RMS. In a pure sine wave supply, the peak is 1.41 times the RMS value, and the mean value is 0.9 times RMS. The energy dissipated in a resistance will depend on the RMS value. The DC voltage of an AC to DC converter will depend largely on the "Peak Value", and the torque of a motor or the force of a solenoid will be determined by the "Mean" value.