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A student combs his hair with a plastic comb, and the hair becomes positively charged. What is the net charge of the comb and the hair and the direction of the charge
transfer?

A.)Protons move from the comb to the hair, and the total charge of the hair and the comb is positive.

B.)Electrons move from the hair to the comb, and the total charge of the hair and the comb is negative.

C.)Protons move from the comb to the hair and the total charge of the hair and the comb is zero.

D.)Electrons move from the hair to the comb, and the total charge of the hair and the comb is zero.

because "This means that when you rubbed the plastic comb along your hair, your hair resisted the movement of the comb and slowed it down. The friction between two surfaces can cause electrons to be transferred from one surface to the other."

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ConcepcionPetillo ConcepcionPetillo · Answer 2 · 2022-03-09T07:33:29+01:00

The correct option is option (D)

Electrons from the hair are transferred to the comb and the overall charge is zero.

Transfer of charge:

When the student combs his hair with a plastic comb, the hair becomes positively charged. The friction between the hair and the comb generates charges by transferring of charge between the hair and the comb.

When the comb is rubbed against the hair, there is a transfer of electrons from the hair to the comb, that is why the hair acquires a positive charge. And the comb becomes negatively charged after receiving the electrons.

Now the total charge on the comb and hair is zero. Since the negative charge on the comb is equal to the positive charge on the hair in magnitude, they cancel out each other.

Also, the charges are acquired due to the transfer of electrons, no charges are being created here, only the transfer of electrons disturbs the balance of positive and negative charges on the hair and the comb. The hair contains more positive ions than electrons due and the comb contains more electrons than positive ions. So the overall charge remains neutral.

Learn more about charge transfer:

https://brainly.com/question/3555850?referrer=searchResults