Ohm's Law

Empirical law stating voltage across a conductor equals current times resistance at constant temperature.

Specifications & Metrics

symbol

V = IR

Core Principles & Analysis

• The law is named after Georg Ohm, who published his results in 1827 as the book Die galvanische Kette, mathematisch bearbeitet.
• Contemporary critics called Ohm's work a 'web of naked fancies'.
• As of 2012 the law had been demonstrated for silicon wires as small as four atoms wide and one atom high.

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Sources

• Wikipedia: Ohm's law