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If the peak value of AC current is 4.24A, what is its root mean square value?

If the peak value of AC current is 4.24A, what is its root mean square value?

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2 Answers

Arun
25758 Points
2 years ago
It depends on the shape of the waveform.
If this is a ‘school-type’ question, and if nothing more is specified, you could presume they are asking you about a sine wave.
In the case of a sine wave, the RMS value is given by dividing the peak value by the square root of 2 (approx 1.4142)
So 4.24 / (sqrt 2) is approx 3 amps (2.998-odd)
But for any other non-sinusoidal waveform - and there is an infinite variety of those - the answer could be almost anything - from very close to zero, up to a maximum of just under, but arbitrarily close to, 4.24 amps.
 
Vikas TU
14149 Points
2 years ago
Dear student 
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Good Luck 

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