1. The problem statement, all variables and given/known data Line A extends from (2,2, 0) to (-2, 2, 0) and line B extends from (2, -2, 0) to (-2, -2, 0). Each has a linear charge density ρl = 1 nC / m. You want to calculate the magnitude and direction of the electric field due to the two line charges for all points on the z-axis. a.) Sketch the charge distribution, and set up the integrals you need in order to solve this problem. Indicate the vector R for each line charge on your plot, and determine expressions for R and R3 b.) Prove that the magnitude of the electric field in the x and y directions is zero. 2. Relevant equations See pdf attachment. 3. The attempt at a solution So far I've tried doing the integration technique shown in the attached pdf (this was a class example) and I am not quite sure if that's correct since there are no Z components. Also this problem is with two line charges and not one... so I guess I am basically having trouble finding out where to start? Any help is appreciated.