What Is Ohm's Law

Ohm's Law is the law of physics which expains the relationship between voltage, current, and resistance in an electrical circuit. It states:

 

E = I x R

Where:

E = Voltage measure in volts

I = Current measured in amperes

R = Resistance measured in ohms

 

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

Joule's Law can be found in the article:

What is Joule's Law?

Reference: RWMA Resistance Welding Manual 4th Edition