# Ohms Law

**Ohm's Law** is a formula used to calculate the relationship between voltage, current and resistance in an electrical circuit.

To students of electronics, Ohm's Law (E = IR) is as fundamentally important as Einstein's Relativity equation (E = mc²) is to physicists.

**E = I x R**

When spelled out, it means **voltage = current x resistance**, or **volts = amps x ohms**, or **V = A x Ω**.

Named for German physicist Georg Ohm (1789-1854), Ohm's Law addresses the key quantities at work in electrical circuits