Question

How to generate electric charge in plastic comb when rubbed with dry hair?

Answer 1

• The same thing happens when the comb is brought near neutral paper strips. Within the papers strips, the electrons get either repelled or attracted according to whether the comb has a negative or a positive charge. ... When the comb is rubbed on a dry cloth, it gets electrically charged.

Answer 2

It is based on electrostatic force.

Plastic Comb : -

When it is rubbed with dry hair / cloth / balloon etc. a force is generated. It is known as electrostatic force. Due to the creation of this force when the comb is taken close to the paper you will see that the paper is attracted towards the comb.