1. The problem statement, all variables and given/known data Find the electric field a distance z above one end of a straight line segment of length L, which carries a uniform line charge λ. Check that your formula is consistent with what you would expect for the case z>>L 2. Relevant equations KQ/r2 3. The attempt at a solution I first considered the x component of the field and integrated Kλx*dx/(x2+z2)3/2 from 0 to L I then considered the y component of the field and integrated Kλz*dx/(x2+z2)3/2 Finally I used pythagorean theorem on both these terms to find the total field. The problem became pretty cumbersome (which is why I didn't follow all the calculations through in this post). Is my method correct, or am I way off here?