1. The problem statement, all variables and given/known data A charged rod of length L = 1.00 m lies centered on the x axis as shown. The rod has a linear charge density which varies according to λ = ax where a = −90.0 μC/m. What is the x component of the electric field at a point on the x axis a distance of D = 2.00 m from the end of the rod? 2. Relevant equations E=kQ/r^2 charge density = Q/A 3. The attempt at a solution I really do not understand...Where do I get the r from? Since its not uniformly distributed how can there be any field outside? Would my r = (D-(half of L))? I'm assuming lambda is just regular charge density at a location of x?