Question

What is electric force ​

Answer 1

Electric force occurs between positive and negative electric charge. It can be calculated with formula $F=\frac{Q_1Q_2}{A\epsilon_0\epsilon_r}$ where F is force, Q1 and Q2 are charges, A is area of object usually ball ($A=4\pi r^2$) because we describe charges as points in space like electrons and protons, $\epsilon_0$ is a natural dielectric constant of empty space or vacuum ($\epsilon_0=8.85\times10^{-12}\mathsf{\frac{As}{Vm}}$) and $\epsilon_r$ also known as relative dielectric variable.

There are two types of the force:

1. Attractive electric force

2. Repulsive electric force

Attractive electric force occurs between positively and negatively charged objects while repulsive occurs between equally charged objects for eg. (positive and positive will repulse).