| Electromagnetic Induction |
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Electromagnetic induction is the production of an electrical Potential Difference (or Voltage ) across a Conductor situated in a changing Magnetic Flux . DISCOVERY Michael Faraday is generally credited with having discovered the induction phenomenon in 1831 though it may have been anticipated by the work of Francesco Zantedeschi in 1829 . FINDINGS Faraday found that the Electromotive Force (EMF) produced around a closed path is Proportional to the rate of change of the Magnetic Flux through any Surface bounded by that path. In practice, this means that an Electrical Current will be induced in any closed circuit when the magnetic flux through a surface bounded by the conductor changes. This applies whether the field itself changes in strength or the conductor is moved through it. Electromagnetic induction underlies the operation of Generator s, Induction Motor s, Transformer s, and most other Electrical machines. Faraday's Law of electromagnetic induction states that: : , where : is the Electromotive Force (emf) in Volt s :ΦB is the magnetic flux in Weber s For the common, but special case, of a coil of wire, comprised of N loops with the same area, Faraday's Law of electromagnetic induction states that
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