A bar magnet is falling from some height through a metal ring.
(i) Will its acceleration be equal to acceleration due to gravity (g)?
(ii) If the metal ring is cut, what will be the value of acceleration in that case?

Explanation

(i) As the magnet is falling, the flux linked with metal ring increases, hence, an emf. is induced The induced current developed in the ring opposes downward motion of magnet. Therefore, acceleration will be less than acceleration due to gravity.
(ii) If the ring is cut, emf will be induced but there will be no induced current. Hence, motion of magnet is not opposed due to absence of induced current and the acceleration will be equal to acceleration due to gravity.