Eddy currents can be briefly explained as currents produced due to induced emf in the form of eddies or ripples.

Hysteresis laws mainly consists of 2 topics retentivity and coercivity.when magnetising field=o and the intensity of magnetisation doesnot become zero at dat time but it is mere to the saturated value then it is called retentivity.

The reverse mag. field applied to demagnetise the specimen is called coercivity.

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