Answer:
Here,
As the
metallic ring falls under gravity in this magnetic field, magnetic flux linked
with the ring changes. Therefore, an emf is induced in the ring. If is induced current in the
ring at any instant, then
induced
emf =
where
Energy
lost/sec in the form of heat produced in the ring =
This
comes from rate of change of potential energy of ring =
(Note
that as = constant, KE of ring is
constant)
or .
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