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At 09:51 AM 5/31/01 -0400, Eugene Mosca wrote:
Is there a conventional definition of voltage? If so, what is it?
How about energy per unit charge?
Is the definition valid in a region where there is both a rotational and an
irrotational electric field?
Yes, but in the presence of non-potential voltages, you can't speak of the
voltage difference between point A and point B without specifying the path
that the test charge takes from A to B.
Does the voltage of a battery differ from the
terminal potential difference?
It does not differ in ordinary situations, such as situations where
Kirchhoff's laws apply.
OTOH if the battery is a region of changing magnetic fields, all bets are
off, as discussed above. There is no "terminal potential difference" and
one would have to work pretty hard to define a nitpick-resistant definition
of "the" voltage of the battery.