Ohm's Law

Ohm Law

Ohm's law give de relations between Voltage, Resistance and Current in pure resistive circuit through two points.

Formula

$\begin{matrix} V = RI \\ R = \frac{V}{I} \\ I = \frac{V}{R} \end{matrix}$

Elements

I : Current, Ampere ( A )
R : Resistance, Ohm ( Ω )
V : Voltage, Volt ( V )

Examples:

V=50 Volts
I=2 Amps
Resistor=?
R=V/I=50/2=25Ω

Calculadora lei de Ohm