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What is 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 (V = IR) is as fundamentally important as Einstein’s Relativity equation (E = mc²) is to physicists.
V = 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 circuits:
