Physics Magnetic Field Created by A Circular Loop of Radius Questions

Determine by direct calculation the magnetic field created by a circular loop of radius “a” traversed by a current of intensity I:a) in the points of its Z axis with origin in the centerb) in its center.From the result obtained in section a), calculate (explicitly by performing the corresponding integrals) the magnetic field created by a very long, straight solenoid with a circular section, at the points of its axis, knowing that it has “n ” turns per unit length through which a current of intensity I flows.Finally, use this last result to determine, by applying Ampère’s theorem, the magnetic field at the interior and exterior points of said solenoid.