Three charges Q,Q and -Q are placed at the corners of a triangle of side a. Find the electric field on the axis of the triangle at a distance 'a' from centroid.

Dear student,

Electric field due to a distribution of charges can be found out at a particular point in the space. Pleaes clarify what is being asked for when it has been talked about electric field on the ‘axis of the triangle’- does it mean we have to find out the electric field at all points along the axis.