Solution to task 312 from Chertov´s for extramural stud

Solution to task 312 from Chertov´s for extramural stud

312. A charge with linear density τ = 1 µC / m is evenly distributed over a thin half-ring of radius R = 10 cm. 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.