Which of the following best defines a conductor?

A conductor is best defined as a material that allows electrical current to flow easily. This characteristic is fundamental in electrical engineering and physics, as conductors possess free-moving electrons that facilitate the transmission of electricity. Common examples of conductors include metals like copper and aluminum, which are widely used in electrical wiring due to their low resistance and high conductivity.

In contrast, materials that resist electrical current flow are classified as insulators, which serve a critical role in preventing unwanted current from passing through certain parts of a circuit. Devices that store electrical charge, such as capacitors, and systems that convert electrical energy to mechanical energy, like motors, serve different functions and do not meet the definition of conductors. Therefore, identifying conductors as materials that enable the flow of electric current is essential for understanding electrical systems and effectively working within the discipline of building maintenance.