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Overview

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Joule's Law states that "when a current I is passed through a resistance R, the resulting power P dissipated in the resistance is equal to the square of the current multiplied by the resistance.

See Also: Open Another, Using the Calculators

Formula

P = I2 * R I = ( P / R )0.5 R = P / I2

P = Power (watt [W]) I = Current (ampere [A]) R = Resistance (ohms [W])

Calculator

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P []:

I []:

R []:

Note! Set unit values prior to calculating.

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