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Electromagnetic Induction — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction1 Mark
Question
A bar magnet falls from a height ‘h’ through a metal ring. Will its acceleration be equal to g? Give reason for your answer.
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Answer

When magnet falls, the magnetic flux linked through the metal ring changes, so current is induced in the ring which (according to Lenz’s law) opposes the approach of magnet, so its acceleration will be less than g.

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