21427d1205693970-ohms-law-fuses-american-wire-gauge-ohmslaw. Understanding Ohm's Law. We have been told and know that V=IR, but why does it work?
This is a simple explanation of Ohm's law and why it works. First, Let's start with the terms: V=voltage The easiest way to think of voltage is to call it potential. Ohm's Law. Ohm's law. V, I, and R, the parameters of Ohm's law. where I is the current through the conductor in units of amperes, V is the potential difference measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms.
More specifically, Ohm's law states that the R in this relation is constant, independent of the current.[3]