Question

Why the ring jumps several metres in air in jumping ring experiment?

Answer 1

1. Before the current in the coil is turned on, the magnetic flux through the ring is zero.
2. Afterwards, the flux appears in the coil in upward direction.
3. This change in flux causes an induced emf and induced current as well in the ring.
4. The direction of induced current in the ring will be opposite to the direction of current in the coil, as dictated by Lenz’s law.