Ohm's law

American  

noun

Electricity.

1. the law that for any circuit the electric current is directly proportional to the voltage and is inversely proportional to the resistance.

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Ohm's law British  

noun

1. the principle that the electric current passing through a conductor is directly proportional to the potential difference across it, provided that the temperature remains constant. The constant of proportionality is the resistance of the conductor

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Ohm's law Scientific  

/ ōmz /

1. A law relating the voltage difference between two points, the electric current flowing between them, and the resistance of the path of the current. Mathematically, the law states that V = IR, where V is the voltage difference, I is the current in amperes, and R is the resistance in ohms. For a given voltage, higher resistance entails lower current flow.

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Etymology

Origin of Ohm's law

First recorded in 1840–50; named after G. S. Ohm

Example Sentences

Electric conduction, which is crucial for many devices, follows Ohm's law: a current responds proportionally to applied voltage.

From Science Daily • Apr. 23, 2024

The many substances for which Ohm's law holds are called ohmic.

From Textbooks • Aug. 12, 2015

Once XC has been found at each frequency, Ohm’s law stated as I = V / XC can be used to find the current at each frequency.

From Textbooks • Aug. 12, 2015

Ohm's law in this form really defines resistance for certain materials.

From Textbooks • Aug. 12, 2015

As regards loss due to resistance, there is a well-known law for determining it, based on Ohm's law.

From Edison, His Life and Inventions by Dyer, Frank Lewis