there are two charges (+q) one at one corner of an equilateral triangle the other at another corner. the triangle has sides length a.
what is the work required to bring another charge (+q) in from infinity to the other corner on the equilateral triangle.
The Attempt at a Solution
ok so i know dW = -dU = F.dl
i thought that maybe finding (F) at the corner that we are bringing the charge to may help...this is:
Fc [at corner] = q2 / 2*pi*epsilon*a2
then i could just integrate this over the distance i am moving it with respect to a...however i know that the one limit will be [tex]\infty[/tex] however i don't know what the other will be
thanks for any help