A 1.0 m long metallic rod is rotated with an angular frequency of 400 rad s¹ about an axis normal to

A 1.0 m long metallic rod is rotated with an angular frequency of 400 rad s¹ about an axis normal to the rod passing through its one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of 0.5 T parallel to the axis exists everywhere. Calculate the emf developed between the
centre and the ring.