"keith" wrote in message
news : On Sat, 12 Nov 2005 05:32:14 -0500, nicksanspam wrote:
:
: Richard J Kinch wrote:
:
: ... The physics of reactive power requires calculus to
understand.
:
: A little trig is sufficient, IMO.
:
: Simple algebra is enough, depending on what you're starting
with. If you
: have the instantaneous voltage and current and a four-function
calculator,
: you have all you need.
:
: --
: Keith

Umm, then how do you get the instantaneous voltage/current over
time?

You know, the phase difference? It varies with time too.