Question

How does the electric force between two charged objects change?

Answer 1

Inverse square variation, `F\prop\frac{1}{D^2}`

Explanation:

Electrostatic force between two point charges `Q_1` & `Q_2` separated by a distance `D` is given as folows

`F=\frac{1}{4\pi \epsilon_0}\frac{Q_1Q_2}{D^2}`

`F\prop\frac{1}{D^2}`

hence the electrostatic force between two point is inversely proportional to the square of distance between the charges