What is the smallest electric force between two charges placed at a distance of `1.0m`?

The force of interaction between two charges placed in vacuum is F . What will be the force be the force between the charges placed at the same distance in a medium of dielectric constant K ?

Find out the electrostalic force between two point charges placed in air (each of +1 C) if they are separately by 1 m.

Find out the electrostalic force between two point charges placed in air (each of +1 C) if they are separately by 1 m.

The ratio of the forces between two charges placed at a certain distance apart in air at half of the distance apart in medium of dielectric .k. is

What is the ratio of electric and magnetic forces between two moving charges?

What is the ratio of electric and magnetic force between two moving charges.