Question

sits charged a plastic ruler by rubbing it with wool. she then moved it over a mixture of salt and pepper. the particles of salt Andrew pepper were attracted to the ruler. explain the phenomenon observed by sita​

Answer 1

Answer :

The phenomenon observed by Sita is called electrostatic attraction .

Explanation :

• When Sita rubbed the plastic ruler with wool , the ruler became negatively charged , i.e. it gained excess electrons .

• The salt and pepper particles in the mixture are neutral , i.e. they have an equal number of protons and electrons .

• Due to the negative charge on the ruler and the neutral charge of the salt and pepper particles , an attractive force is created between them .

• This attractive force is caused by the exchange of electrons between the ruler and the salt and pepper particles .

• As a result, the salt and pepper particles move towards the ruler and stick to it.

• This phenomenon is known as electrostatic attraction and is a fundamental principle of electrostatics .

• It explains how charged objects can attract neutral objects and is commonly observed in everyday life , such as when clothes stick together in the dryer or when a balloon sticks to a wall after being rubbed on hair .