Solution to task 318 from Chertov´s for extramural stud

Solution to task 318 from Chertov´s for extramural stud

318. A quarter of a thin ring with a radius of R = 10 cm carries a uniformly distributed charge Q = 0.05 µC. 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.