Definition, Meaning & Synonyms

Joule's Law

Noun

/ˈdʒuːlz lɔː/

Definition

A principle in physics that relates the heat produced by an electric current flowing through a conductor to the resistance of the conductor and the square of the current.

Examples

The heating of the wire due to Joule’s Law can cause it to melt if too much current is passed through.
According to Joule’s Law, doubling the current will quadruple the heat generated in the resistor.
Joule’s Law is crucial in electrical engineering and helps in designing circuits to prevent overheating.

Meaning

Joule’s Law states that the heat generated in a resistor is proportional to the square of the electric current flowing through it and the resistance of the resistor.