Short-Question

# Why is friction charging important?

## Why is friction charging important?

Ans: Yes, friction causes the production of charge on an object. When two objects rub against each other vigorously, the transfer of free electrons takes place between them. The object from which electrons rubbed off acquires a positive charge, whereas the object which gains electrons acquires a negative charge.

### When you charge a balloon by rubbing it on your hair this is an example of what method of charging?

electrostatic charging
Scientists have long known that rubbing two materials, such as a balloon on hair, causes electrostatic charging.

#### Why does hair stand up with friction?

Static electricity is the imbalance of positive and negative charges. If two things have opposite charges, they attract each other; if they have like charges, they repel each other. This explains why your hair stands on end when you take off a sweater or a wool hat.

Which force attracts hair to a charged comb?

electrostatic force of attraction
When the charged comb is brought near bits of paper, the electrostatic force of attraction between the atoms of the paper and the comb caused by the electrons on the surface of the comb polarizes them which attracts the pieces of paper towards the comb.

What is charging friction?

Charging by friction: the transfer of electrons from one uncharged object to. another by rubbing the two objects together. Some electrons can move to the. other object when rubbing (hair and balloon) Charging by conduction: the transfer of electrons from one object to another by.

## How can you describe charging by friction?

When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be ‘rubbed off’ one material and on to the other. The material that gains electrons becomes negatively charged.

### How does charging by friction happen?

#### Which is an example of charging by friction?

Charging by friction involves rubbing two different materials together that have different pulls towards electrons, so that one material will pull away electrons when the materials are separated and both will become charged. A common example of charging by friction is rubbing a balloon against hair. When…

How is a silk comb charged by friction?

The glass rod is positively charged and the silk fabric is negatively charged as it absorbs additional electrons from the glass rod. In this case, bar after rubbing, comb after running through dry hair becomes electrified and this is an example of frictional electricity.

What happens when a hair is rubbed against a balloon?

When a material with a strong pull towards electrons (relatively), like rubber in a balloon, is rubbed against hair, it takes some of the hair’s electrons. When the two are separated, the balloon is negatively charged due to the excess electrons, while the hair is positively charged.

## Why does a comb get charged when you rub your scalp?

If we run a comb through our hair, the comb gets charged and can attract tiny pieces of paper. This is because the comb may have lost its electrons or gained some electrons when we rub it with the scalp.