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Magnets not only attract but also repel each other depending on their position.
2. Repulsive property:
Experimental set-up
- Suspend a bar magnet on a wooden stand.
- Tie a thread to the middle of the magnet with the help of a sheet of paper.
- Take another bar magnet's north pole next to the suspended magnet's north pole.
Inference:
It is observed that the suspended magnet's north pole moves away from the other bar magnet's north pole. This is due to the repulsive property of magnets.
But if the magnet's south pole is brought closer to the suspended magnet's north pole, they get attracted to each other. As a result, it is deduced that unlike poles of a magnet are attracted to one another.
This attraction and repulsion property is mainly used in the working of Maglev trains. To know more about Maglev trains, Click here.
Important!
Like poles repel one another, whereas unlike poles attract each other.
3. Directive property:
Experimental set-up
- Suspend a bar magnet on a wooden stand with a thread tied to the middle of the magnet. [NOTE: No magnetic substance should be placed around the bar magnet.]
- Slightly disturb the suspended magnet and allow it to oscillate.
- When the magnet is stationary, the position of the ends of the magnet is noted.
- Repeat this process several times and note the position simultaneously.
Inference:
When we repeat this process, the freely suspended bar magnet rests in the same direction again and again, which is the geographic North-South direction.
When we repeat this process, the freely suspended bar magnet rests in the same direction again and again, which is the geographic North-South direction.
The property of a magnet that aligns itself in the North-South direction is known as the directive property.
Imaginary lines of Earth
Important!
The magnetic north pole always points towards the geographic north direction, and the magnetic south pole always points towards the geographic south direction.
Reference:
https://image.shutterstock.com/z/stock-vector-geomagnetic-field-of-planet-earth-scientific-depiction-with-geographic-and-magnetic-north-and-267738107.jpg
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