Suppose that an inductor is formed by N turns of a conductive wire wound around a magnetic material. The magnetic material forms a circular cylinder of radius r = 10 cm, and height h = 5 cm. The inductance of the inductor turns of N is defined as: L = f / I (Henrys). Where L = inductance of the inductor, I = current flowing through the winding, 1/f = n = the total magnetic field which embraces all the winding turns (magnetic flux linkage), n = number of turns, f = the net flux passing through the sectional area of a turn. Suppose the magnetic field around the winding can be approximated using the magnetic field at the center of a "loop" circular. Find the inductance of the inductor.