[sdiy] Dr strange no volt!

[Glen]

At 03:26 PM 8/6/04 , M.A. Koot wrote:

>Interesting discussion, I've heard about having 0 volts and still having
>currents before, really weird.
>But when one does look at it straight to the point, Mister Ohm still says I
>= U/R.
>So no matter the resistance: if U = 0, I is also 0!
>Period. ;)

Not so fast, you're actually defining "division by zero". I've always been
told that the world has yet to come to a definite conclusion as to what
division by zero would yield. One suggestion that I've heard is division by
zero results in infinity, but I don't know how many people tend to agree
with that hypothesis. People can't even decide on exactly what the
ramifications of infinity are, for one thing.

Remember, part of the discussion was whether you could have current flow
with zero voltage, inside a superconductive loop. Ohm's law sort of breaks
down in this case, I would think.

So, if you truly had zero resistance and zero voltage, could/would there be
current flow in a superconductive loop? If so, how much current? Infinite?


later,
Glen