What do the quoted rms current, rms voltage and average power of an AC supply represent?

1. Ohm's law and the power expressions for AC take the same algebraic form as their DC versions. 2. The only change is that rms and average values are substituted for the constant DC values. 3. So the rms values are the equivalent DC values for a simple resistive circuit. 4. That is why 120 V AC in a home means an rms voltage of 120 V rather than a peak of 120 V. 5. Quoting the peak instead would overstate the delivered power by a factor of two. _Source: OpenStax College Physics (CC BY 4.0), Ch 20 "Electric Current, Resistance, and Ohm's Law", section Alternating Current_