Calculateur de la Loi d'Ohm Gratuit

Calculez la tension, le courant ou la résistance avec la loi d'Ohm (V = IR).

A
Ω

Voltage

20.0000 V

Power40.0000 W

Voltage vs Current

Voir la formule →

Formule

## Ohm's Law Ohm's law is the foundational relationship in circuit analysis, connecting voltage, current, and resistance. ### Formula **V = I * R** where V is voltage in volts, I is current in amperes, and R is resistance in ohms. Power dissipated is P = I² * R.

Exemple Résolu

2 amperes flowing through a 10 ohm resistor.

  1. 01V = I * R
  2. 02V = 2 * 10
  3. 03V = 20 V
  4. 04P = I² * R = 4 * 10 = 40 W