On Oct 2, 2012, at 9:26 PM, Valter Prahlad wrote:

But you are measuring
Alternating Current so you have to multiply the Volt-Amps by .707 to get
the actual power developed.

Oh! I didn't know that!

The power is RMS, so you multiply by 1/√2 for sine wave AC current.

See:<http://en.wikipedia.org/wiki/Root_mean_square>

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