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Which of the following is NOT an insulator?
Question

Which of the following is NOT an insulator?

A.

Gold

B.

Mica

C.

Glass

D.

Wood

Correct option is A


Gold is a metal and an excellent conductor of electricity due to its free electrons, making it NOT an insulator.
Mica, Glass, and Wood are all insulating materials that restrict the flow of electrical current.

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