1. The problem statement, all variables and given/known data A long coaxial cable consists of an inner cylindrical conductor with radius a and an outer coaxial cylinder with inner radius band outer radius c. The outer cylinder is mounted on insulating supports and has no net charge. The inner cylinder has a uniform positive charge per unit length λ. Calculate the magnitude of the electric field at any point between the cylinders a distance r from the axis. Express your answer in terms of the variables a, b, c, r, λ and constants π and ϵ0. 2. Relevant equations E=(1/4πϵ0)(q/r^2) q= λ2πr 3. The attempt at a solution Using the equation above I got (E= λ/2ϵ0r). I just want to make sure that I'm not missing anything. I only have one attempt left at answering the question.