Final answer:
Electrical insulation refers to the material that surrounds and separates an electrical conductor to prevent the flow of electric current. It is made of non-conductive materials such as rubber, plastic, or glass.
Step-by-step explanation:
In the context of electrical conductors, electrical insulation refers to the material that surrounds and separates the conductor from other objects or conductors. This insulation is usually made of non-conductive materials such as rubber, plastic, or glass. The purpose of the insulation is to prevent the flow of electric current between the conductor and other objects, thereby ensuring the safety and efficiency of the electrical system. For example, in an electrical wire, the metal conductor is encased within insulating material to protect against electric shocks and short circuits.