Question

sometimes a crackling sound is heard while taking off sweater during winters. whatever is the real of iron?

Answer 1

when we take of our sweaters , our body and the sweater rub against each other , which creates a charge difference , due to which , static electricity is released , causing , the sparks
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Answer 2

Answer:

When we take out sweater, Woolen sweater gets charged due to friction between the sweater and the body. This results in crackling sound.