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
The moving magnet induces eddy currents in the tube, which by Lenz's law oppose its motion. It soon reaches a small terminal speed.
Solution by Sreeraj P, M.Sc Physics