What is Joule's Law?

Joule's Law is the relationship between current flow through a resister for a length of time which creates heat.

 

 

H = Heat Generated

I = Current

R = Resistance

T = Time of Current Flow

 

Joule's Law and Ohm's Law are the physicss behind resistance welding. 

Ohm's Law can be found in the article:

What is Ohm's Law?

Reference: RWMA Resistance Welding Manual 4th Edition