Is it true that under normal circumstances, air is an insulator of electric current?

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True

False

answer is A.

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Detailed Solution

The above statement is True.
Air is a combination of neutral or inert gases. So, it comprises few or no charged particles or free ions for the conduction of electricity. Under normal circumstances, the air is an insulator of electric current. The molecules of gases are comparatively far apart, so they don't collide with each other or into other things as often as the more closely spaced particles of liquids or solids do. But, at the time of lightning and thunderstorms, it turns into a conductor and carries charged particles between the cloud and the ground.

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