A metallic rod of 1m length is rotated with a frequency of 50rev/s, with one end hinged at the centre and the other end at the circumference to the circle metallic ring of radius 1m, about an Axis passing through the center and perpendicular to the plane of the ring. A constant and uniform magnetic fields of 1T parallel to the axis is present everywhere. what is the emf between the centre and metallic ring
