When a conductor is rotated in a magnetic field at what point in the cycle is emf at maximum amplitude?

When a conductor is rotated in a magnetic field, the electromotive force (emf) reaches its maximum amplitude when the plane of the conductor is perpendicular to the magnetic field lines. At this point, the rate of change of magnetic flux through the conductor is highest, leading to the maximum induced emf according to Faraday's law of electromagnetic induction. This occurs twice during each complete rotation, specifically at 90 degrees and 270 degrees of the rotation cycle.