Lenz's Law, Eddy Currents & Induced Electric Field
A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is
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Answer: (c)
- Induced current in the ring opposes the relative motion of the magnet (Lenz's law).
- This gives an upward force on the magnet both while approaching and while leaving.
- So acceleration is less than , answer (c).