Question

Why do we need magnetic keepers ?

Answer 1

Answer:

A magnet keeper, also known historically as an armature, is a ferromagnetic bar made from soft iron or steel, which is placed across the poles of a permanent magnet to help preserve the strength of the magnet by completing the magnetic circuit; it is important for magnets that have low magnetic coercivity, such as

Explanation:

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Answer 2

magnetic keepers have a useful safety function, as they stop external metal being attracted to the magnet

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