What is the function of an ohm?

An ohm is defined as a unit of electrical resistance. This unit measures how much a component opposes the flow of electric current. According to Ohm's Law, resistance is a key factor in determining how much current will flow in a circuit when a certain voltage is applied. The relationship is described by the formula: Voltage (V) = Current (I) multiplied by Resistance (R). Thus, the ohm establishes a clear link between voltage, current, and resistance within an electrical system, making it a fundamental concept in both theoretical and practical electrical engineering.

Understanding resistance in ohms is crucial for designing and analyzing electrical circuits, as it allows for predicting how various components will perform under different electrical loads.