Eddy currents are induced within conductors due to the changing magnetic field in the conductor, due to Faraday's law of induction.
In a transformer core, eddy currents are produced which heats up the core and also causes losses by distorting the main current. If the core were a single piece its area would be large, and hence low resistance which causes a larger current to flow thus increasing the losses.
If the core is laminated, the area is reduced and hence resistance becomes high which limits the current to a minimum value. The sum of currents in all the laminations would be still less than when a single core was used.
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SANTOSH KUMAR
June 21, 2018Eddy currents are induced within conductors due to the changing magnetic field in the conductor, due to Faraday's law of induction.
In a transformer core, eddy currents are produced which heats up the core and also causes losses by distorting the main current. If the core were a single piece its area would be large, and hence low resistance which causes a larger current to flow thus increasing the losses.
If the core is laminated, the area is reduced and hence resistance becomes high which limits the current to a minimum value. The sum of currents in all the laminations would be still less than when a single core was used.