Ohm’s Law

Ohm’s Law describes the relationship between DC voltage, DC current, and resistance.

I = \frac{V}{R}

Where:

V = DC voltage drop between two points on a circuit in volts.

I = DC current going the two points in amperes.

R = resistance between the two points in ohms.

Resistive Circuit

This law is only applicable for resistive loads. Complex circuits work with impedance instead of resistance.