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Quiz yourself on Electromagnetic InductionGet your flashcardsBuild my revision planTrack my progress📖 The Motor Effect in Reverse
If a current in a magnetic field produces motion, can motion in a magnetic field produce current? YES! This is electromagnetic induction — discovered by Faraday in 1831. Move a magnet into a coil, and current flows. Stop moving, and the current stops. This simple principle generates virtually ALL the world's electricity — from nuclear power stations to wind turbines to the dynamo on your bike!
KEY REQUIREMENT: The magnetic field must be CHANGING. A stationary magnet in a coil induces no voltage!
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