48 Ohm’s Law

Ohm’s law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• I = Current in Amperes (A)
• V = Voltage in Volts (V)
• P = Power in Watts (W)
• R = Resistance in Ohm (Ω)
• Current equals Voltage divided by Resistance ($\text{I}=\frac{\text{V}}{\text{R}}$)
• Resistance equals Voltage divided by Current ($\text{R}=\frac{\text{V}}{\text{I}}$)
• Voltage equals Current times Resistance ($\text{V}=\text{IR}$)