What does ohm measure in an electrical circuit?

Ohm measures resistance in an electrical circuit. Resistance is a property of a material that quantifies how much it opposes the flow of electric current. When a voltage is applied across a conductor, ohms quantify how much current will flow through it based on its resistance. This relationship is described by Ohm's Law, which states that voltage (in volts) is equal to current (in amperes) multiplied by resistance (in ohms). Therefore, understanding ohms as a unit of measurement for resistance is fundamental to analyzing and designing electrical circuits effectively.