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Materials and Components - Engineering

Q1:

A material which is lightly repelled by a magnetic field is known as

A diamagnetic material

B non-magnetic material

C ferromagnetic material

D paramagnetic material

ANS:A - diamagnetic material

Ferromagnetic materials, such as iron, are strongly attracted to both poles of a magnet.

Paramagnetic materials, such as aluminum, are weakly attracted to both poles of a magnet.

Diamagnetic materials, however, are repelled by both poles of a magnet. The diamagnetic force of repulsion is very weak (a hundred thousand times weaker than the ferromagnetic force of attraction).