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I deleted the following from the page because I believe it's nonsense (the RMS is the DC equivalent, not the form factor). I've preserved it here in case it was valuable to someone. LightYear (talk) 22:42, 12 December 2012 (UTC)[reply]
The form factor can be multiplied by an alternating current's peak voltage or current to provide the direct current equivalent in terms of power.
and .
Conversely, it can be used to divide a DC value, giving the peak AC value needed to provide the same power.
What is best methods for solving alternating current problem