1. The problem statement, all variables and given/known data Thin Rod - Length = 5.0cm - Total Charge = 8.4 nc Calculate the electric field at point p, 3cm away. 2. Relevant equations E = (1/4∏ε) * (q/r^2) λ = Q/L 3. The attempt at a solution I think you treat the rod as a series of point charges, meaning the electric field would be the sum of the individual electric fields. If the rod was vertical, I would know what to do as you have to calculate the integral due to the varying distances and the charges are to the point using trigonometry and Pythagoras, we went through an example of this. In this case the rod is horizontal, but obviously the distance for the 'point charges' still varies so I've been trying to construct an integral for this. E = (1/4∏ε) * Ʃ(Δq/d^2_i) I've also calculate the charge density.