Ohm's Law Calculator

Ohm's Law explains the relationship between voltage, current, and resistance by stating that the current through a conductor between two points is directly proportional to the potential difference across the two points.

Definition of Ohm's Law

A law relating the voltage difference between two points, the electric current flowing between them, and the resistance of the path of the current. Mathematically, the law states that V = IR, where V is the voltage difference, I is the current in amperes, and R is the resistance in ohms. For a given voltage, higher resistance entails lower current flow.


Resistance (Ω)   Current I(A)   Voltage (V)  
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Voltage (V)   Resistance (Ω)   Current I(A)  
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Voltage (V)   Current I(A)   Resistance (Ω)  
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