One of the things that I'm always amazed at from an electrical perspective is the amount of current that is used in welding. Just as an example, let's assume a welding setup calls for 300V and we measured the resistance between the wire on the welding gun at .2 ohms. If we use the standard ohm's law formula where I = E/R we could solve for current. In the formula I = current, E=voltage, and R=resistance.

Question

One of the things that I'm always amazed at from an electrical perspective is the amount of current that is used in welding. Just as an example, let's assume a welding setup calls for 300V and we measured the resistance between the wire on the welding gun at .2 ohms. If we use the standard ohm's law formula where I = E/R we could solve for current. In the formula I = current, E=voltage, and R=resistance.

Solve for current (I) using the information provided.

Answer 1

To solve for current (I), we can use Ohm's law formula:

I = E/R

Given that E = 300V and R = 0.2 ohms, we can substitute these values into the formula:

I = 300V / 0.2 ohms

Simplifying the expression:

I = 1500 A

Therefore, the current (I) in the welding setup is 1500 Amperes.