An electrical insulator material is one that does not allow easy flow of electric current.
Unlike conductors and semiconductors, insulators have high electrical resistivity, meaning electrons do not move freely through them.
These materials are used to prevent the conduction of electricity and protect against unwanted electrical discharges. Common examples of electrical insulators include plastic, wood, glass, concrete, or ceramics.
Their property of not allowing the passage of current makes them safe for use in cables, outlets, and electrical devices.
