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A 1.0 m long metallic rod is rotated w...

A 1.0 m long metallic rod is rotated with an angular frequency of `400 rad s ^-1` 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 eveywhere. Calculate the emf developed between the centre and the ring

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