[sdiy] Alternating dead current voltage??

[René Schmitz]

Hi all,

> I think that makes it a little clearer. Theoretically, I think it IS
> possible to have voltage without current flow (voltage is just a measure of
> potential difference), but it's not something that happens too often in the
> real world.

I hope its more than just theoretical, since for example batteries 
should retain their voltage when I'm not using them.
Or think of a wall outlet, would you think there is a voltage present, 
if there is no load? I would.

Current without voltage is a little more difficult. But as I understand it,
what happens in supraconducers.

This reminds me of this: Some time ago I saw a note hanging in the 
Institute for Theoretical Nuclear Physics here in Bonn, saying that the 
electricians would make a part of the building "voltageless" on Monday. 
Somebody scribbled on that:"No problem, as long as we have current!" :-)

Merry Christmas,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159