Solution to task 319 from Chertov´s for extramural stud

Solution to task 319 from Chertov´s for extramural stud

319. Charge Q = 10 nC with linear density τ = 0.01 µC / m is evenly distributed over a thin ring. Determine the strength E of the electric field created by the distributed charge at point A, lying on the axis of the ring and remote from its center at a distance equal to the radius of the ring.