So I have to provide the expression of the eletric field generated by a sphere of radius R whose surface charge density is SIGMA and is constant, using ONLY coulomb's law (no Gauss theorem)
I take it the only way to find it is to decompose the sphere in elementary circle, find the eletric field created by these and then integrate somehow...
I guess I found the correct expression of the eletric field generated by a circle, but I don't know how I can find the eletric field generated by the whole sphere.




Any suggestion ? Perhaps I'm not doing it the right way, if that's the case, some hint would be welcome, thanks in advance.

Nevermind, problem solved (I'm so clever).
Thanks to anyone who tried though :-)

I would have tried but I had a bad professor for physics II and I won't go anywhere near that shit, lol.

This post was edited by Dontrunaway on Oct 13 2013 02:02pm

I remember our prof couldn't pronounce anything lol

curl = cooorel
equivalent=equeeeevahlent
dr=deeeargghghghgh