Question

A comb run through one's dry hair attracts small bits of paper. Why?

What happens if the hair is wet or if it is a rainy dry?

Answer 1

Answer:

When the comb runs through dry hair, it gets charged by friction. The molecules in the paper get polarized by the charged comb, resulting in a net force of attraction. If the hair is wet, or if it is a rainy day, the friction between the hair and comb reduces.

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Answer 2

Answer:

The comb run through ones dry hair attracts small bits of paper because it applies electrostatic force and this force is formed when comb gets charged.

As unlike charges attract each other similarly, charged comb attracts uncharged paper bit