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When a magnet is pushed into a closed coil, where does the work done against the repulsion end up?
AJoule heat in the coil
BEnergy stored in air
CSound energy in air
DLight given off
Answer & Solution
Correct answer: A. Joule heat in the coil
The work spent in moving the magnet appears as heat produced by the induced current in the resistance of the coil.
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