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physics

Which are good insulators ?

This question has multiple correct options
A

wood

B

copper

C

human body

D

glass

Answer

When a current flows through a conductor, the free electrons in the atoms move from one end of the conductor to the other. Certain materials have less free electrons in their atoms and the current does not easily flow through the material. There are no such free electrons in wood and glass. Therefore, they cannot conduct electricity and they are good insulators.
Hence, the statement is true.

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