[sdiy] Dr strange no volt!

[M.A. Koot]

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. ;)

Cheers,
Michiel

----- Original Message ----- 
From: "karl dalen" <dalenkarl at yahoo.se>
To: "Ian Fritz" <ijfritz at earthlink.net>; "Glen" <mclilith at charter.net>;
<synth-diy at dropmix.xs4all.nl>
Sent: Saturday, August 07, 2004 12:06 AM
Subject: Re: [sdiy] Dr strange no volt!


> --- Ian Fritz <ijfritz at earthlink.net> skrev:
> > At 03:45 AM 8/6/2004, Glen wrote:
> > >At 09:18 PM 8/5/04 , karl dalen wrote:
> > >
> > > >Is it possible to have a flow of current at 0V?
> > > >Is it possible to have current but no voltage?
> > > >Is it possible to have voltage but zero current?
> > >
> > >The answer to the last question is yes. For example if you open a
switch,
> > >the voltage is still present on each terminal, but there is no current
> > >flow. (For all practical purposes.)
> > >
> > >The answers to your first 2 questions is normally no, -- but
> > >superconductivity, quantum mechanics, or some other exotic technology
might
> > >say other wise. I'm no expert in those fields.
> >
> > A time varying magnetic flux through a closed loop of wire will produce
a
> > current in the wire. This is Faraday's law of induction. Not exotic at
all,
> > just straight classical E&M.  Of course this would not be relevant to a
> > voltage regulator IC.
>
> Asuming a superconductor of zero ohm as loop then, if ohm
> present, i.e. copper, there would be a small voltage present!
>
> KD
>
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