What Is Insulator ??
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Explanation:
a substance which does not readily allow the passage of heat or sound.
"cotton is a poor insulator"
a substance or device which does not readily conduct electricity.
"a series of electrodes separated by insulators"
a block of glass, ceramic, or other insulating material enclosing a wire carrying an electric current where it crosses a support.
Answer:
Any material that keeps energy such as electricity, heat, or cold from easily transferring through is an insulator. Wood, plastic, rubber, and glass are good insulators. ... The opposite of insulator is conductor: a material that easily transmits heat or electricity.