The net force on the charge placed at origin

[Jai Singh]

Ques:
If infinite number of charges placed along x-axis .At x=1, 1μC , x=2, 2μC, x=3, 3μC so on. Find the net force on charge 1μC placed at origin.


Formula used
(1/4πε)*q1*q2/r²

Solved from this formula but stuck in a series

 

[cnh1995]

Welcome to PF!
Please read the rules for posting here:
https://www.physicsforums.com/threads/physics-forums-global-guidelines.414380/
This question belongs to homework help forum. Please use the template provided. It is necessary to show your attempt first.