A rectangular loop with sides a = 10 mm and b = 20 mm is placed on the xy plane, in free space, centered at the origin and carries a current I = 0.5 A
(a) Calculate the magnetic field intensity of the loop at a general point P under the conditions used for the dipole that is; R » b, where R is the distance from the center of the loop to point P.
(b) Calculate the magnetic flux density at any point on the xy plane for R » b.