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AP Physics C: E&M
13.3 Induced Currents and Magnetic Forces
13.2 Electromagnetic Induction
IntermediateMCQConceptual19.2k
A copper ring falling toward the top of an active solenoid.
A copper ring falling toward the top of an active solenoid.
A solid copper ring is released from rest above a vertical solenoid that carries a constant direct current. As the ring falls toward the top opening of the solenoid, it experiences an upward magnetic force that opposes its motion. Which of the following best explains the origin of this upward magnetic force?

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