Question

what is retentivity??
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Answer 1

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the induced magnetic field in the ferromagnetic material at which the magnetising field is reduced to zero is called retentivity

Answer 2

Retentivity means "The power of retaining", which is commonly used to describe iron and it's ability to continue to be a magnet after being magnetized by a magnet. It, in effect "retains" the ability to magnetize other magnetic objects.

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