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A bar magnet attracts both ends of a metal rod. State and explain, by writing about poles, whether the rod is a magnet or an unmagnetised magnetic material.

Answer Summary

When a bar magnet attracts both ends of a metal rod, it is an indication that the rod has become magnetised, and is therefore a magnet itself. This is because of the presence of magnetic poles, which are the ‘ends’ of a magnet that are responsible for the magnetic field and its forces. The pole which is attracted to the bar magnet is known as the south pole, and the pole which is repelled from the bar magnet is known as the north pole.

Poles and their Properties

Magnetic poles, which are found at either end of a magnet, are responsible for the magnetic field and its forces. Opposite poles attract each other, while like poles repel each other. When a bar magnet attracts both ends of a metal rod, it is an indication that the rod has become magnetised. This is because the bar magnet has induced the north and south poles in the metal rod, causing it to become a magnet itself.

Magnetisation Process

When a bar magnet is brought close to an unmagnetised magnetic material, it causes the material to become magnetised. This process is known as magnetisation, and it involves the induction of a magnetic field in the material, which in turn creates a north and a south pole. The south pole of the material is attracted to the north pole of the bar magnet, while the north pole of the material is repelled by the south pole of the bar magnet.

Conclusion

Therefore, when a bar magnet attracts both ends of a metal rod, it is an indication that the rod has become magnetised, and is therefore a magnet itself. This is due to the presence of magnetic poles, which are the ‘ends’ of a magnet that are responsible for the magnetic field and its forces.

Related Questions

What is magnetism?
What is a magnetic field?
What are magnetic poles?
What is the difference between a north and south pole?
What is the magnetisation process?
What is the difference between a magnet and an unmagnetised magnetic material?
What are the properties of magnetic poles?
What is the magnetic force between two poles?
How can a metal rod become a magnet?
What happens when a bar magnet is brought close to an unmagnetised magnetic material?

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