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1. Though Earth is acting as a huge bar magnet it is not attracting other ferromagnetic materials. Why? Give reasons.
A ferromagnetic material, when , turns to a . While heating, the of a ferromagnetic material is altered and turns into a paramagnetic material.
is the temperature at which the ferromagnetic material becomes paramagnetic material.
Hence, the Earth is not attracting other ferromagnetic materials.
2. Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
During magnetisation, it is not advisable to slide a magnet on an iron bar back and forth because moving a magnet in direction will work to each other.
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