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For a rectangular wave, average current is ______ rms current.

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For a rectangular wave, average current is ______ rms current.

(a) Greater than

(b) Less than

(c) Equal to

(d) Not related

I had been asked this question in an international level competition.

My question comes from Average and RMS Values of an Alternating Current in chapter Alternating Voltage and Current of Basic Electrical Engineering

1 Answer

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The correct answer is (c) Equal to

The explanation: The rms value is always greater than the average except for a rectangular wave, in which the heating effect remains constant so that the average and the rms values are the same.

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