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RMS Value Formula
| Sr. No. | Nature of AC Waveform | Formula for RMS Value |
|---|---|---|
| 1) | Sinusoidal AC Current or Voltage having peak value Im or Vm | Im / √2 or Vm/√2 |
| 2) | Any function f(x) | |
| 3) | Complex Wave | Square root of rms value of individual components |
| 4) | Symmetrical Square Wave with amplitude 'a' and time period T. | 'a' (equal to Amplitude ) |
- How do you calculate RMS current?
- What is the RMS current?
- What is true RMS formula?
- What is RMS value of AC?
How do you calculate RMS current?
Divide the rms voltage by the impedance to calculate the rms current.
What is the RMS current?
RMS or root mean square current/voltage of the alternating current/voltage represents the d.c. current/voltage that dissipates the same amount of power as the average power dissipated by the alternating current/voltage. For sinusoidal oscillations, the RMS value equals peak value divided by the square root of 2.
What is true RMS formula?
True RMS Calculation
For example, the true RMS voltage of a window size of 80 is would be the square root of each of instantaneous voltage of the 80 voltages squared divided by 80. If under the rare circumstance that the AC voltage is a pure sinusoid, then the Vrms = √ of the instantaneous voltage.
What is RMS value of AC?
RMS value or Root Mean Square value is the amount of steady alternating current that is flowing through a given conductor for a given period of time. The formula for finding RMS value of AC is given by, Irms=I0√2=0.707I0.
