Question

When a person combs his hair static electricity is sometimes generated by:

• A. friction between comb and hair resulting in flow of electrons.
• B. induction between comb and hair.
• C. conducting property of hair.
• D. contact between comb and hair resulting in a charge.

Answer 1

The correct option is A friction between comb and hair resulting in flow of electrons.

When a person combs his hair and moves the comb near to small pieces of paper then pieces of paper get attracted towards the comb. Because, during the combing, electrons get transfer from hair to comb so comb develops negative static charge.

Here, the Process of charge transfer is happing due to rubbing so you can say that 'friction between comb and hair resulting in flow of electrons'.

Hence Option A