Question 11.SP.4: The sine wave of an alternating current shows a maximum valu......
The sine wave of an alternating current shows a maximum value of 80 A. What value of dc current will produce the same heating effect?
Step-by-Step
If an ac wave produces as much heat as 1 A of direct current, we say that the ac wave is as effective as 1 A of direct current. So
I_{dc} = I_{rms} = 0.707\ I_{M} (11-9)
RMS value = 0.707 × peak value (11-9)
= 0.707(80) = 56.6 A
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