Subscribe to our Youtube Channel - https://www.youtube.com/channel/UCZBx269Tl5Os5NHlSbVX4Kg
Sometime, a crackling sound is heard while taking off sweater during winters. Explain.
A sweater is made up of wool.
When we take off a woollen sweater, it rubs against our body or the shirt we are wearing.
This rubbing produces opoosite electric charges
Thus, the discharge of these electric charges produces a crackling sound