alleryA copper plate swings between the poles of a magnet and soon stops. The cause is:
AGravity pull
BStatic charge
CEddy currents
DAir friction
Answer & Solution
Correct answer: C. Eddy currents
1. The plate moves in and out of the field.
2. Changing flux induces swirling currents in the plate.
3. These eddy currents damp the swing.
_Source: syllabus Physics Part I, Chapter 6, Electromagnetic Induction._
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