Why Do Opposite Charges Attract?

[akashpandey]

I know its very basic but still.
From the school level we thaught that positive attracts negative.

But i still don't know what is reason behind it.
Why this work on atomic level? What is the reason behind the electrostatic attraction?

 

[Simon Bridge]

Bottom line: it is a handy way to talk about a behaviour (specifically of electricity) that we see in Nature.
We do not know of any absolute "why" for this that would not lead to a "why" for the reason. It is just how things work.

But there is a deeper physics in QFT:
http://physics.stackexchange.com/qu...charges-repel-attract-each-other-respectively