Re: R = V/I ?
Title: Re: R = V/I ?
A linear I-V plot does not make a resistor. An I V plot of a
battery is linear (at least for small current draws) but it is not a
resistor. For a resistor, the graph must be
proportional, linear with no intercept.
I wish texts would make clear that "internal
resistance" of a battery is a dynamic resistance, and that this
model of a battery only works for limited amounts of current drawn
from the battery.
I am going to try to answer Jim Green's
questions, and try to summarize
where I am with respect to this thread.
(1) One way to describe a device that follows
Ohm's Law is to say its plot
of I-versus-V must be a straight
line.
...
Michael D. Edmiston,
Ph.D.
Phone/voice-mail: 419-358-3270
Professor of Chemistry &
Physics
FAX:
419-358-3323
Chairman, Science
Department
E-Mail
edmiston@bluffton.edu
Bluffton College
280 West College Avenue
Bluffton, OH 45817
--
Dr. Vern Lindberg
716-475-2546
Department of Physics
Fax
475-5766
85 Lomb Memorial Drive
Rochester Institute of Technology
Computer Haiku
Rochester, NY 14623
A
file that big?
It might be very useful.
But
now it is gone.