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Basic Physics
Basic electricity
Electric power

16. Basic electricity

Electric power

In 16. Basic electricity

Formula

P=VI

Using Ohm's law

P=I^2R=\frac{V^2}{R}

Tags

electricity
electricity basic
physics
physics formula

Detail

Electric power is the product of the potential difference and the current.

Intuitive explanation

La potencia eléctrica indica la rapidez con la que un dispositivo transforma energía eléctrica.

Derivation

Como

P=\mathrm{d}W/\mathrm{d}t

y

W=VQ

, con corriente constante

P=VI

; usando

V=IR

también

P=I^2R=V^2/R

.

Worked example

Un aparato de

120\,\mathrm{V}

y

2\,\mathrm{A}

disipa

P=240\,\mathrm{W}

.

Also known as

electrical power formula
potencia eléctrica

Related topics

Basic electricity

Last reviewed: 2026-09-14

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