Whose law relates the current, voltage and resistance in an electric circuit?

Georg Simon Ohm, a German physicist, published the relationship in 1827. In modern form, the law is written as V = IR, where voltage equals current multiplied by resistance. It is one of the first equations taught in electricity because it describes how simple circuits behave. Ohm’s work helped turn electricity into a quantitative science. The unit of electrical resistance, the ohm, was later named in his honor.