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A north pole is pushed towards a closed coil. How do flux and coil force behave?
AFlux rises, repulsion
BFlux constant, no force
CFlux rises, attraction
DFlux falls, attraction
Answer & Solution
Correct answer: A. Flux rises, repulsion
Flux through the coil rises, so the induced current makes a north-facing coil that repels the approaching magnet.
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