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# Consider a metal ring kept (supported by a cardboard) on top of a fixed solenoid carrying a current $I$ as shown in the fig : The centre of the ring coincides with the axis of the solenoid. If the current in the solenoid is switched off, What happens to the ring ?

(a) the ring jumps up
(b) the ring will remain on the cardboard
(c) the ring flies off from the solenoid
(d) none of the above happens