Joule′s Laws

Describe the heat produced when a current flows through a resistance and the internal energy of an ideal gas.

Joule's First Law

The heat produced when a current flows through a resistance for a specified time:

Where

Q = heat produced [J]
I = current [A]
R = resistance [Ω]
t = time [s]

Joule's Second Law

The internal energy of an ideal gas is independent of its volume and pressure, depending only on its temperature.


See also: Ideal Gas, Resistance.

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Subjects: Physics