Answer:
![F=(K Q1Q2)/(d^2) \\](https://img.qammunity.org/2021/formulas/mathematics/high-school/z446pdn7iyrh8vehpdkhwo1b0nj8czciiz.png)
Explanation:
According to coulombs law "the force of attraction or repulsion between two charges Q1 and Q2 in a given medium is directly proportional to the product of their charges and inversely proportional to the square of the distance separating them"
![F=(K Q1Q2)/(d^2) \\](https://img.qammunity.org/2021/formulas/mathematics/high-school/z446pdn7iyrh8vehpdkhwo1b0nj8czciiz.png)
where
k = constant of proportionality (
)