What is insulator definition?

An insulator is a material that resists the flow of electrical current. This means that an insulator does not allow electricity to freely flow through it, which makes it useful for protecting people and equipment from electrical shocks or damage. Insulators are often used to cover wires, cables, and other electrical components in order to prevent accidental contact with live circuits. Examples of insulating materials include rubber, plastic, glass, and ceramic. The effectiveness of an insulator is measured by its electrical resistance, which determines how much current can flow through it. The higher the resistance, the better the insulator. Insulators are commonly used in electrical wiring, power distribution systems, and electronic devices.