Question

It has been observed that after rubbing the comb with hair, it starts to attract tiny pieces of paper. Identify the correct statement which explains the above phenomenon.

• A. Combing the hair leads to charging it by induction
• B. The comb became charged by friction, and it caused redistribution of charges in pieces of paper when brought close to them
• C. Comb gets charged and attracts the tiny pieces of paper by conduction
• D. It attracted tiny pieces of paper due to cohesive forces

Answer 1

The correct option is B The comb became charged by friction, and it caused redistribution of charges in pieces of paper when brought close to them

Comb becomes positively charged due to friction on rubbing with hair.

So when the comb is brought in close vicinity of paper pieces, it induces opposite charge on the surface of paper facing the comb.

Thus, oppositely charged surface of comb and paper leads to attraction.