1. The problem statement, all variables and given/known data A charge per unit length +λ is uniformly distributed along the positive y-axis from y = 0 to y = +a. A charge per unit length −λ is uniformly distributed along the negative y-axis from y = 0 to y = −a. Write an expression for the electric field at a point on the x-axis a distance x from the origin. (Use the following as necessary: k, λ, x, and a.) 2. Relevant equations E = k|q|/r2 I derived this equation by treating the ends of the wire as point charges. Ey = 2kqa/(y2+x2)3/2 3. The attempt at a solution I quickly determined that the field vectors x and k would be 0. For the y vector: dEy = 2ak(dq)/(y2+x2)3/2 dq/dy = Q/2a ∫dEy = (4akQ/2a)∫dy/(y2+x2)3/2 = 2kQy/[x2(y2+x2)1/2] 2kλy/[x2(y2+x2)1/2] The limits of integration are from 0 to a. I am pretty sure this is not correct, and have been working at it for a while, so I would appreciate some help.