E = I x R

E = volts
I = current (Amps)
R = resistance (Ohms)

There may be a reactance phase shift from the coil/magnet that may or
may not need to be taken into account.

Hope that helps.

On Tue, 2007-06-12 at 03:18 -0700, Geoffrey wrote:
> There are formulas for figuring out voltages and turns
> and magnetic fields such as design formulas for
> transformers since most power today is AC.
> But it has been so terribly long ago that I ever
> did such things I can no longer tell the technical detales.
> Plain Old Physics should have an ideal kind of law
> that will answer your questions without being exact
> but give you an excellent idea of what to expect.
> The internet is the best place to start looking
> but out there is some mathematician/physicist that would love
> to share his knowledge with you.
> Possibly an old Electronics book that deals with such things
> as designed for understanding by a layman/noobe.
> Mathematicians must account for all units etc. but i think
> for a laymen experimentation and curve tracing can
> give you good results so long as the goes ins and outs
> are close enough for government work.
> Simply matching a math curve to the data points found
> so you put in the known to get the unknown without
> knowing what goes on in the middle.
> Magic Numbers and stuff.
> (I just wish i knew a few myself)
> 
> 
> ----- Original Message ----- 
> From: "Jón Frímann" 
> To: "PSN-Postlist" 
> Sent: Monday, June 11, 2007 05:25
> Subject: How many volts ?
> 
> 
> Hi all
> 
> I got a coil and magnet from Larry today and I was wondering what the
> voltage level of the coil is. But the coil is 9000 ohms.


-- 
73, de Brad KB8UYR/6 

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