What is an insulator known for?

An insulator is characterized by its ability to prevent the flow of electrical current. This property makes it an essential material in electrical systems, where managing the movement of electricity is crucial for safety and functionality. Insulators are often used to protect and separate conductive materials, ensuring that electricity flows only along designated paths.

In contrast, materials that transmit electrical current are classified as conductors, while those that absorb heat more effectively would not necessarily serve the same purpose in an electrical context. Thus, the defining feature of an insulator is its lack of electrical conductivity, which distinguishes it clearly from other types of materials.