5. What happens when a magnet is kept in East-West direction for a long time?
Answers
Not much. Modern magnets have high retentivity. Once magnetized, they retain their magnetism long after the magnetizing force that originally magnetized them has been removed. These same materials also tend to have high coercivity. High coercivity means that they are also quite resistant to being demagnetized, even in the presence of relatively weak external magnetic fields, such as the Earth’s magnetic field, or other much stronger magnetic fields.
Answer:
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Explanation:
There isn't much. The retentivity of modern magnets is very high. They retain their magnetism long after the magnetising force that first attracted them has been eliminated. The coercivity of these materials is also high. They are also highly resistant to being demagnetized, even in the presence of relatively modest external magnetic fields, such as the Earth's magnetic field, or other considerably stronger magnetic fields, due to their high coercivity.