Q 12-06-018NEETJEE MainEasy
A magnet is dropped through a long vertical copper tube. Compared with free fall, it falls
Answer: (D) more slowly, because eddy currents oppose its motion
Concept. A magnet moving in a conductor induces eddy currents, which oppose its motion (Lenz's law).
Step 1. Apply. The magnet is slowed and quickly reaches a small terminal speed, so it falls more slowly than in free fall.
Answer. More slowly, because eddy currents oppose its motion (Option D).
Solution by Sreeraj P, M.Sc Physics