"Bob Eager" wrote in message ...
On Sat, 17 Jan 2004 19:28:23 UTC, "ripper"
wrote:

You are trying to find current from two known quantities, voltage and power.
Power remains constant, voltage varies.

No, it doesn't.

And if you use 110 Volts, the amps now increase to 86.4 Amps

LOL!

So if I apply a 1.5 volts from a Duracell AA cell, I can get about 6300
amps? Lovely!

Better yet, consider the situation if you were to ever cut the supply!
to maintain the somewhat dotty theory that the current will vary to
keep power constant as the voltage changes (I = P/V where P is
constant) the current I must become infinite!!!

Conclusions, either:
a) When you turn off a shower (or a light bulb) the power
dissipated remains constant and the current is infinite.
OR
b) The constant power idea is tosh and it is the resistance that
stays constant.


Please avert your eyes if you are offended by someone shamelessly
waving their qualifications about - I don't like to do it but it seems
reasonable at this point... I have a masters degree in electrical
engineering, came top of my class, was awarded a prize by the
Institution of Electrical Engineering (the IEE) and my grasp of
electrical theory leads me to opt for answer "b". Anyone think they
have any better ideas?