What is Ohm's Law?

Ohm's Law defines the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The law states that the current through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. This relationship is expressed with the formula V = I × R, where V represents voltage in volts, I represents current in amperes, and R represents resistance in ohms.

This means that if you know the current flowing through a circuit and the resistance, you can calculate the voltage drop across that resistance. Understanding this fundamental principle is crucial for analyzing and designing electrical circuits, as it allows one to determine how much voltage is needed to drive a certain amount of current through a specific resistance. This foundational knowledge is essential in fields such as electronics, electrical engineering, and physics.