A rectangular periodic current has a value of 10 A for one-fourth of each cycle and is zero for the remaining three-fourths. Determine its RMS value in ampere.
Physics · AC Circuits · Average Value, RMS Value, Power and AC Instruments
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Question

A rectangular periodic current has a value of 10 A for one-fourth of each cycle and is zero for the remaining three-fourths. Determine its RMS value in ampere.

G1 Physics · Accepted Answer

Iᵣₘₛ² = [10²(T/4) + 0]/T = 25. Therefore, Iᵣₘₛ = 5 A.