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What are eddy currents ? |
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Answer» In 1875, Forcault observed that when a metal piece is kept in variable magnetic field, current are always induced in the plate which is of whirling nature. They are called eddy currents or Forcault's current. Core of transformer is laminated to prevent the induction of these currents. They are used to made moving coil galvanometer dead beat. The direction of eddy currents is given by Lenz's law. |
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