Is it true that a crackling sound is heard when you remove a sweater during winter?

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True

False

answer is A.

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Detailed Solution

The above statement is true.
A crackling sound is heard when we remove a sweater during winter because the sweater gets charged because of the friction acting between the sweater and the body. The sweater is made of wool, a bad conductor of electricity. Therefore, when we remove the sweater, the sweater comes in contact with our body, and there is rubbing between our body hair and the sweater. This rubbing produced a charge on the sweater, and we heard a crackling sound.

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