Solution to task 423 from Chertov´s for extramural stud

Solution to task 423 from Chertov´s for extramural stud

423. A rod of length l = 20 cm is charged with a uniformly distributed charge with a linear density τ = 0.2 µC / m. The rod rotates with a frequency of n = 10 s-1 about an axis perpendicular to the rod and passing through its end. Determine the magnetic moment pm due to the rotation of the rod.