Ohm's Law

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. It's succintly expressed by the equation V = IR, which states that the voltage across a resistor is directly proportional to the current current flowing through it and the resistance of the resistor

The wheel diagram provides a handy reference for solving for any one of the variables if the other two are known.

Remember, Ohm's Law only applies to ohmic materials that have a constant resistance over a range of voltages and temperatures. In the context of AC circuits or non-ohmic materials, more complex laws and principles are used.