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Dear Student,
option (b) Alnico is the alloy used for making permanent magnets.
Alnico means Al-Ni-Co (Aluminium , Nickel, Cobalt) .
It is an alloy of iron and includes the above mentioned components. It is highly ferromagnetic thats why used for making permanent magnets
option (b) Alnico is the alloy used for making permanent magnets.
Alnico means Al-Ni-Co (Aluminium , Nickel, Cobalt) .
It is an alloy of iron and includes the above mentioned components. It is highly ferromagnetic thats why used for making permanent magnets