RMS Used in AC Circuit Analysis

RMS of sine wave signal

Because the value of an AC signal is continuously varying, it would be difficult to use formulas such as ohms law. In the specific case of a sine wave, the Root Mean Square (RMS) of the wave is used instead.

For alternating electric current, the RMS value is equal to the value of the constant direct current that would produce the same power dissipation in a resistive load. The average of a sine wave would produce a lower value.

If the waveform is a pure sine wave, the relationships between peak amplitude and RMS is RMS = peak * .707 and peak = RMS * 1.414.

Learn more at

More Science, Technology, Engineering, and Mathematics Information:
• Leonardo Da Vinci - Leonardo's Animals
• Lithium Ion Battery Chemistry
• Transformers
• Reduce, Add, Subtract, Multiply and Divide Signed Fractions
• What Is an Electronic Circuit?
• Basic Geometry Terminology: Point, Line, Line Segment, Ray, Plane, Plane Figure
• Add, Subtract, Multiply and Divide Positive and Negative Integers
• Inductors in Series and Parallel
• Inductive Reactance
• Junction Field Effect Transistor (JFET)