What are materials that prevent the free flow of electricity called?

Materials that prevent the free flow of electricity are known as insulators. Insulators are used to protect us from electric shock and to ensure that current flows only through the intended paths in electrical circuits, thereby preventing short circuits and ensuring safety. Common examples of insulators include rubber, glass, and certain plastics, all of which have high resistance to electrical current.

Insulators serve as barriers to the flow of electrons, which is crucial in maintaining the integrity of electrical systems. This property makes them essential in the design and implementation of electrical wiring and devices, as they help to contain the electrical current within the conductive paths while keeping it from affecting other materials or causing hazards. Understanding the role of insulators is vital for anyone involved in fire safety and electrical inspections, as the integrity of these materials can significantly influence safety measures in buildings and installations.