Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.

AcademicPhysicsNCERTClass 8

Given:

Sometimes, a crackling sound is heard while taking off a sweater during winter.

To do:

To explain the reason why sometimes, a crackling sound is heard while taking off a sweater during winter.

Solution:

Let us know why the crackling sound is heard while taking off a sweater during winter:

Sweater is charged by friction:

A sweater is a cloth made up of wool and wool is a bad conductor of electricity. We know that poor conductors of electricity can be charged by friction. When we take off the sweater in winter, an electric discharge occurs between our body and the sweater due to friction between our body and the sweater.

A crackling sound is heard when sweater is taken off:

Due to the occurrence of an electric discharge between the sweater and our body, there is a release of some energy and this released energy causes a crackling sound to form.

raja
Updated on 10-Oct-2022 13:25:11

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