[gomaaa]

Interesting. I served in the military as a Precision Measuring Electronics (PMEL) Tech, and callibrated oscilloscopes and other test equipment for the guys who worked on the black boxes in fighter aircraft. I bet those fighter jocks would have felt very comfortable knowing that the entire electronics systems within their aircraft were based on mere imagination. I thought you did not believe in such things as magic.

The REAL Ohm's law reads(from Quark's FAVORITE text, Classical Electrodynamics by J.D. Jackson):

J = s E

(Note: the 's' should be a greek 'sigma' character, and may actually appear as such in your browser. It's not working for me for some reason.) Where J is the current density, s is the area through which the current is moving, and E is tha applied electric field. It so happens that this rather evil little equation reduces to the simple V = IR that everybody knows and loves for most metals. So pretty much everything YOU had to manipulate in your career as an electrician followed the more practical version of ohm's law. Here's a website that explains the microscopic view of Ohm's law in more detail:

http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/ohmmic.html#c1

[Quark2005]

...from Quark's FAVORITE text, Classical Electrodynamics by J.D. Jackson

Arrrggghhh.....

(Great book, really, but a substantial headache...)