So far i have learn Vrms, Vdc and Vac, and this is what i understand(adsbygoogle = window.adsbygoogle || []).push({});

Vrms is the power of the voltage,

Vdc is the average voltage.

And what is Vac actually? The sine wave? another word for R.M.S, or it is the value of AC voltmeter can measured out, I am not sure where i find this equation,

Vac = √(Vrms^2 - Vdc^2)

And in a stimulation of Multisim software, i found that the AC voltmeter give almost the same answer computed from the equation above, and i hardly found a source mention about this Vac stuff

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# What is AC voltage, Vac?

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