Question

when some one pulls a plastic comb through thin hair the hair becomes positively charge
a:which end more elecrons than normal a comb or hair
b:why does the hair becomes bositivly charged

Answer 1

Answer:

Every object has a 'normal' amount of electricity that can be transferred from one object to the other when two objects are in close contact, as when they are rubbed together.

When the plastic comb is pulled through hair, it acquires a negative charge. That is, it picks up more electrons than it had before. The hair losses its electrons to the plastic comb and acquires positive charge