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Michael FaradayMichael Faraday While Orsted discovered a relationship While Orsted discovered a relationship
between magnetism and electricity, Faraday between magnetism and electricity, Faraday discovered the principle of discovered the principle of electromagnetism: that electricity can be electromagnetism: that electricity can be created using magnetism.created using magnetism.
Faraday presenting to the Royal Society
Faraday’s ExperimentsFaraday’s Experiments
http://micro.magnet.fsu.edu/http://micro.magnet.fsu.edu/electromag/java/index.htmlelectromag/java/index.html Show two of Faraday’s experimentsShow two of Faraday’s experiments
Left-Hand: 3 Finger RuleLeft-Hand: 3 Finger Rule
The direction that induced current flows The direction that induced current flows depends upon the direction the flux lines cut depends upon the direction the flux lines cut across the conductoracross the conductor
This direction can be determined by using This direction can be determined by using the 3-finger rule.the 3-finger rule. Pointing finger points fromPointing finger points from
N to S pole.N to S pole. Thumb points in the direction Thumb points in the direction
in which the conductor moves.in which the conductor moves. Middle finger indicates Middle finger indicates
the direction of electron flow.the direction of electron flow.