An Electromagnet produces a strong changing magnetic field along its axis. This changing magnetic flux induces an emf (potential difference) in aluminum and copper rings, which means that a current is flowing through the ring. The direction of the current opposes the change in the magnetic flux through the ring (lenz's law) . The result is a repulsive force that causes the ring to shoot upward.
An Electromagnet produces a strong changing magnetic field along its axis. This changing magnetic flux induces an emf (potential difference) in aluminum and copper rings, which means that a current is flowing through the ring. The direction of the current opposes the change in the magnetic flux through the ring (lenz's law) . The result is a repulsive force that causes the ring to shoot upward.
DubSponge 3 months ago
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DubSponge 3 months ago