Q)
A metallic rod of 1 m length is rotated with a frequency
of 50 rev/s, with one end hinged at the centre and the other end at the
circumference of a circular metallic ring of radius 1 m, about an axis
passing through the centre and perpendicular to the plane of the ring
(see fig). A constant and uniform magnetic field of 1 T parallel to the
axis is present everywhere. What is the emf between the centre and
the metallic ring?
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