1. The problem statement, all variables and given/known data three equal and positive charges q are located equidistant from the origin as shown http://s966.photobucket.com/albums/...n=view¤t=directionofanelectricfield.jpg . Is the direction of the electric field at the origin a) along x, b)along -x, c) along +y d) along -y 2. Relevant equations The electric field is directed outward away from Q when Q is positive. 3. The attempt at a solution Do the field lines along the x axis emerging from the charges on the x axis cancel or enhance each other at the origin? Do I have to do vector addition on the x axis to solve this problem?