Root-mean square (RMS) is a mathematical formula for:

Select one:

A. Calculating the electrical power passing through an alternating current circuit.
B. Measuring the pressure drop across an air filter.
C. Determining the price of a replacement compressor.
D. Determining the physical resistance of an AC motor.

Root Mean Square (RMS) is a statistical measure used to express the average current or voltage in an AC system by squaring the quantity, finding the mean, and then taking the square root.

Explanation:

Root Mean Square (RMS) is a statistical measure used to express the average current or voltage in an AC system. It is obtained by squaring the quantity, finding the mean, and then taking the square root. In AC circuits, the RMS current and voltage are used to calculate the average power.

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