What does one ohm represent in a circuit?

One ohm represents the level of electrical resistance that allows a current of one ampere to flow when a voltage of one volt is applied across it. This relationship is defined by Ohm's Law, which states that voltage (V) equals current (I) multiplied by resistance (R), formulated as V = I × R. Thus, when a voltage of one volt is applied and the resistance is one ohm, one ampere of current is generated, clearly illustrating the definition of an ohm in a circuit.

This is a fundamental concept in electrical engineering and is essential for understanding how circuits operate. It establishes a clear and direct relationship between voltage, current, and resistance, crucial for designing and analyzing electronic circuits.