Question

A comb run through ones hair attracts small bits of paper. What happens, if the hair are wet or if it is a rainy day?

• A. The comb does not get charged and it will not attract small bits of paper.
• B. The comb does not get charged but it will attract small bits of paper.
• C. The comb does gets charged and it will attract small bits of paper.
• D. The comb does gets charged but it will not attract small bits of paper.

Answer 1

The correct option is A The comb does not get charged and it will not attract small bits of paper.

Comb gets electrically charged by friction when even through dry hair. It attracts small bits of paper because paper gets polarized in the presence if charged comb resulting in a net force of attraction. When hair is wet, the friction between comb and hair decreases and comb does not get charged. Hence, it may not attract small bits of paper.