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For a direct current, the rms voltage is ________ the mean voltage.

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For a direct current, the rms voltage is ________ the mean voltage.

(a) Greater than

(b) Less than

(c) Equal to

(d) Not related to

I have been asked this question by my college professor while I was bunking the class.

This interesting question is from Average and RMS Values of Sinusoidal & Non-Sinusoidal Currents and Voltages topic in section Alternating Voltage and Current of Basic Electrical Engineering

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Best answer
Right option is (c) Equal to

Best explanation: For a direct current, the mean voltage value is the same as that of the rms voltage.

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