Re: Self-inductance, a conceptual question

[Bob Sciamanda <trebor@VELOCITY.NET>]

Lest someone get tied up in knots,  my statements about transformers should
have included the condition "for a given primary current."  In sum, the
(open) secondary emf is proportional to the product Np*Ns, FOR A GIVEN
PRIMARY CURRENT.
> . . .
> Consider a transformer with an open-circuited secondary.  The emf induced
in
> the secondary is proportional to both Np (since Phi and dPhi/dt are
> proportional to Np) and Ns (since the turns are in series and the emf
> dPhi/dt is induced in each secondary turn).  Thus the secondary emf is
> proportional to the product Np*Ns. . . .

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor