Question

what are the demerits of magnetic field lines?​

Answer 1

Answer:

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Explanation:

It is restricted to ferromagnetic materials - usually iron and steel, and cannot be used on austenitic stainless steel. It is messy. Most methods need a supply of electricity. It is sometimes unclear whether the magnetic field is sufficiently strong to give good indications.

Answer 2

Explanation:

It is restricted to ferromagnetic materials - usually iron and steel, and cannot be used on austenitic stainless steel. It is messy. Most methods need a supply of electricity. It is sometimes unclear whether the magnetic field is sufficiently strong to give good indications.