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Why does a metal ring jump when the coil below it is switched on?
AParallel currents attract it
BIt becomes a permanent magnet
CInduced current opposes the coil's
DThe iron core pulls it upward
Answer & Solution
Correct answer: C. Induced current opposes the coil's
Rising flux induces a current in the ring opposite to the coil current, and opposite currents repel.
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