Question

When people use plastic combs on their hair, the combs become negatively charged. Which statements about this situation are true?

The comb loses electrons.
The comb gains electrons.
The hair loses electrons.
The hair gains protons.
The hair loses protons.

those above are the choices

Answer 1

If the comb has become negatively charged, it must have gained electrons.

Answer 2

Answer: The correct answer is "The comb gains electrons".

Step-by-step explanation:

A static charge is induced by rubbing the two surfaces of the material. These materials are not a good conductor of electricity.

The electrons are transferred from one material to the other.

A static charge is induced on a material when the material loses electrons due to friction.

The material which acquires the electrons will get negatively charged.

While combing the hairs by using a comb the combs become negatively charged. Here, the electrons are transferred from hair to the comb. Therefore, the comb will gain electrons and it will get negatively charged.

Therefore, "the comb gains electrons" is true.