Electric field due to a point charge inside a dielectric medium (eg, glass, water, etc.): how does the expression for the electric field due to a positive point charge change in the presence of a dielectric medium with relative permittivity & ?

Explanation:

The electric field due to a positive charge at a distance is given by

Where, q be the charge on the charged particle and r be the distance between the charged particle and the point where electric field is to be calculated.

If the medium is inserted whose dielectric constant is K , then the electric field becomes

As teh value of K is more than 1, so the value of electric field E' is less than E.

It means when the medium is inserted, the electric field becomes reduced.

number of electrons for neutral cl