62A. A magnetic field has a magnitude of0.0590T and is uniform over a circular surface whose radius is0.165m. The field is oriented at an angle of=23.5^owith respect to the normal to the surface. What is the magnetic flux through the surface?

62B. A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. The square loop is then re-formed into a circular loop, which also consists of a single turn and is also perpendicular to the same magnetic field. The magnetic flux that passes through the square loop is 7.17 10^-3 Wb. What is the flux that passes through the circular loop?

63A. A circular coil (860 turns, radius = 0.033 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.027 s, the normal makes an angle of 45^o with the field because the coil has made one-eighth of a revolution. An average emf of magnitude 0.078 V is induced in the coil. Find the magnitude of the magnetic field at the location of the coil.