O a X P 2. (7 pts) A ring of radius a carries a uniformly distributed charge Q. a. Find the electric potential at point P. b. Find the electric field at point P, a distance x from the center of the ring along its axis. Hint: Add up the x-components of the dE produced by each segment of the ring. c. Would your answers to parts a or b above change if the charge were distributed non-uniformly along the ring? Explain briefly