Electrical Power Calculator

Calculate electrical power using P = V * I, with additional forms P = I²R and P = V²/R.

V
A
Ω

Power (V*I)

600.0000 W

Power (I²R)600.0000 W
Power (V²/R)600.0000 W

Power (V*I) vs Voltage

Ver formula →

Formula

## Electrical Power Electrical power is the rate of energy transfer in an electric circuit. ### Three Equivalent Forms **P = V * I** (voltage times current) **P = I² * R** (current squared times resistance) **P = V² / R** (voltage squared divided by resistance) All three yield the same result when V, I, and R satisfy Ohm's law.

Exemplo Resolvido

A 120 V circuit drawing 5 A through a 24 ohm load.

  1. 01P = V * I = 120 * 5 = 600 W
  2. 02P = I² * R = 25 * 24 = 600 W
  3. 03P = V² / R = 14400 / 24 = 600 W