Question

How would you explain the pattern formed by the iron filings/magnetic sand?

Answer 1

A magnetic field is created around a bar magnet. Magnet attracts magnetic metals such as iron.  When iron fillings put in the magnetic field around bar magnet, a pattern is formed by the iron filings around a bar magnet made of lines radiating outward from the North (N) and S (S) poles. The lines curve towards the opposite pole.

Answer 2

Explanation of the pattern formed by the iron filings/magnetic sand:

• When the iron fillings are thrown near the magnet, the iron are best magnetic attracted agents.
• These magnetic irons are highly attracted towards the magnet from the corners and edges where magnetic flux is more forming an concentric circle.
• But the middle portion of magnet does not carry the much magnetic force.
• Hence the force applied is lesser and hence the iron filling are just spreaded over the magnetic flux which is due to magnetic end pole.

To know more:

Describe a way to separate iron filings from sand.

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