Actually, it is Ohm's definition. Ohm merely made the observation that a
conductor placed across an electromotive source caused current to flow. He
then DEFINED the resistance of that conductor to be the ratio of the emf to
the current, or R = E/I.

Both of the other basic forms (E = I*R and I = E/R) are algebraic
manipulations of the "law".

Jim



"cledus" wrote in message
...
SuperM wrote:
Same as posted a few years ago.



I had a prof that referred to it as "Ohm's opinion" :-)