Question

sometimes, a crackling sound is heard while taking off a sweater during winters. Why?

Answer 1

This crackling sound is produced because the particles of sweater get charged by rubbing and when we take our sweater off it is again rubbed and sound is produced.

Answer 2

During winters we wear a sweater to keep us warm. However, while removing it, we hear a crackling sound. This sound is caused because the electric discharge occurs between the sweater and our body.

• Friction occurs between the body and the sweater while removing it.
• This causes the electrons from the body to shift onto the sweater.
• There is an act of transferring the electrons which results in a spark.
• Although the spark is small and insignificant it emits heat, light, and produces sound.