The effective or RMS value of an alternating quantity is that steady current (dc) which when flowing through a given resistance for a given time produces the same amount of heat produced by the alternating current flowing through the same resistance for the same time.
RMS value of a sinusoidal current:
RMS value of a full wave rectifier output:
Form Factor:
It is the ratio of RMS value to the average value of an alternating quantity is known as Form Factor.
Peak Factor or Crest Factor:
It is the ratio of maximum value to the RMS value of an alternating quantity is known as the peak factor.
For a sinusoidal waveform and For full wave rectifier output:
For a Half Wave Rectifier Output:
