Investigating electromagnetic induction

Investigating electromagnetic induction

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Caption: Investigating electromagnetic induction. Apparatus used to show the effect of a conductor moving through a magnetic field. Two weights, one magnetic (not seen) and one non-magnetic (yellow, lower left), are dropped simultaneously down two identical copper tubes (centre left and right). As the magnetic weight moves down the tube it causes a current to be induced in the tube. This generates a magnetic field which opposes the magnetic field of the weight, causing it to slow down. As the non-magnetic weight does not have the same effect it falls through it's tube much faster than the magnetic one.

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Keywords: apparatus, caucasian, changing magnetic field, classroom, comparing, comparison, conductor, copper tube, dropping, electric current, electromagnetic induction, electromagnetism, emf, equipment, hand, hands, human, induced current, investigating, laboratory, lenz law, lenz's law, magnet, magnetic, magnetic field, magnetic fields, magnetism, people, person, physical, physics, school, science education, tubes, white

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