1. The problem statement, all variables and given/known data A ring of radius a is made from a charge wire with a uniform charge density λ. a) Calculate the electric potential due to the ring as a function of distance from its center along the axis of the ring passing through the center, perpendicular to its plane b) If a particle of mass m with a charge identical to that of the ring displaced ever so slightly from the ring's center what speed will the particle eventually attain after being repulsed by the ring. 2. Relevant equations V = k∫(1/r)dq 3. The attempt at a solution So for a I drew the ring here is my best redraw of it in ms paint below. After drawing it i used dq = λ dL than i plug that in to V = k∫(1/r)dq and I plug (a2 + d2)1/2 for r. getting me V = k∫(λdL)/(a2 + d2)1/2 getting me V = (kλL)/(a2 + d2)1/2 since L = 2πa I can replace it in the fuction. So I get V = (2kλπa)/(a2 + d2)1/2 I have to clue weather or not this is right and have no idea how to begin part b.