Re: delta V = I R

[Ludwik Kowalski <KowalskiL@MAIL.MONTCLAIR.EDU>]

Definitely yes, try to measure the leakage resistance of an
electrolytic capacitor. It will change by at least one order
of magnitude before R is suddenly reduced to nearly zero.
Do not forget to say good bye to the device before this
happens at some high voltage. I once nearly became blind
when a capacitor exploded. (See the old thread "A Myth
About Capacitors in Series".)

"Paul O. Johnson" wrote:

> Michael Edmiston wrote:
>
> > Please tell me what utility one would gain from knowing the "resistance" of a non-ohmic
> > device given that the value is only valid at one potential difference.
>
> I have always believed and taught that the resistance value depends on the device's
> temperature, not on the potential difference across it. Is there really a functional
> relationship between R and delta V at constant T?
>
> poj