A unit of measure of electrical resistance is called a ____________.

The unit of measure for electrical resistance is the ohm. It reflects how much a material opposes the flow of electric current. Named after the German physicist Georg Simon Ohm, this unit is essential for understanding and calculating how electricity flows through various materials, especially in wiring and circuit designs.

In practical applications, knowing the resistance of different components helps technicians and installers ensure that circuits are safe and function as intended by minimizing power loss and preventing overheating. Electrical resistance is a fundamental concept in both basic electrical theory and in the analysis of complex electrical systems.

Understanding the ohm enables professionals in the field to apply Ohm's Law, which relates voltage, current, and resistance (V = IR), forming the backbone of many troubleshooting and installation procedures.