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Power is not measured in RMS. RMS is applied to a voltage or current waveform to allow power calculations and comparisons. The average power is = Vrms x Irms. I know that some people say "RMS power" but that is incorrect. -- Steve -- (talk) 19:46, 9 April 2022 (UTC)[reply]
Visualization
This entry would benefit from the addition of a visualization.
First you need to ask the person using that term what they mean by it.
What kind of drawing are you thinking would help? You take the RMS voltage and current and multiply them at a sound peak.
If you have a true reading power meter, read it at a sound peak.
The distinction here may be the way it is distinguished from peak instantaneous power. That would be peak instantaneous voltage times peak instantaneous current. -- Steve -- (talk) 23:26, 5 September 2022 (UTC)[reply]