Question

Which of the following is an insulator? (a) copper. (b) Mercury (c). air (d) stainless-steel​

Answer 1

Answer:

air is an insulator

since it doesn't conduct heat and electricity

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Answer 2

Answer:

Insulators are those who do not radiate heat or sound,electricity

Therefore, air is an insulator.

While copper, Mercury, stainless steel are all conductors. However they allow heat, electricity and sound to radiate.

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