What is the unit of measurement for resistance?

Resistance is measured in ohms, which is the correct answer. The concept of resistance stems from Ohm's Law, which illustrates the relationship between voltage, current, and resistance in an electrical circuit.

In this context, ohms quantify how much a material opposes the flow of electric current. A higher resistance means that the material allows less current to pass for a given voltage. This unit is essential for understanding electrical circuits and components, such as resistors, and plays a crucial role in both practical engineering and theoretical physics.

Other choices represent different electrical concepts: volts measure electric potential difference, amperes measure electric current, and coulombs measure electric charge. While all these units are integral to electricity, they do not pertain to the measurement of resistance, emphasizing the importance of distinguishing between related electrical parameters.