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Re: emf, potential, voltage



----- Original Message -----
From: "John S. Denker" <jsd@MONMOUTH.COM>
To: <PHYS-L@lists.nau.edu>
Sent: Saturday, March 17, 2001 7:28 PM
Subject: Re: emf, potential, voltage

As to assuming "constant mechanical load" and "angular velocity
proportional to current".... I don't see how that helps, conceptually or
otherwise. The load is rarely constant in this way. Usually we apply a
voltage to the leads of our motor, and let the current be a dependent
variable. You can't independently dictate the values of the voltage and
the current.

Where do you get the notion that I want to dictate current values? I want
to hold fixed the *mechanical* load on the *shaft*.

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