Ohm's Law Wheel Diagram (with Power)

The Ohm's Law Wheel with Power provides a graphical representation of the relationships between voltage, current, resistance and power in a direct current electrical circuit.

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them.

The mathematical equation that describes this relationship is:

where I is the current through the conductor in units of amperes, V is the potential difference measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms. More specifically, Ohm's law states that the R in this relation is constant, independent of the current.

The law was named after the German physicist Georg Ohm, who, in a treatise published in 1827, described measurements of applied voltage and current through simple electrical circuits containing various lengths of wire.

Ohm's law - Wikipedia, the free encyclopedia