Solution to task 317 from Chertov´s for extramural stud

Solution to task 317 from Chertov´s for extramural stud

317. Charge Q = 20 µC with linear density τ = 0.1 µC / m is evenly distributed over a thin half-ring. Determine the strength E of the electric field created by the distributed charge at the point O, which coincides with the center of the ring.