Question

Why can substances remain electrically charged only for a temporary period
when comb becomes negatively charged when rubbed with dry hair after sometime comb and hair both become neutral ?HOW?

Answer 1

hey dear friend!

this is because the neautrality of polarity can be changed by electric field in this case. when u create -charge in the comb and u expose the pieces of paper to the electric fiel created by the charge,you will polarise them so that the part closer to the comb will be +and the other will be -. the same polarities does not like each other so they repal and the different polarities like each other so they attract to each other

hope uh understand!

Answer 2

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.

Explanation:

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