Question

3.When do magnets lose their properties?

Answer 1

Answer:

Magnetic materials lose magnetism as they heat, but they regain magnetism when cooled provided the maximum temperature is below their Curie temperature. Above the Curie temperature, a magnet permanently loses all or some of its magnetism.

Answer 2

$\huge\bf\star\fbox\red{Question:-}$

3.When do magnets lose their properties?

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$\huge\bold\pink\bigstar{Answer}$Elevated temperature: Magnetic materials lose magnetism as they heat, but they regain magnetism when cooled provided the maximum temperature is below their Curie temperature. Above the Curie temperature, a magnet permanently loses all or some of its magnetism.

$\huge\bf\star\fbox\red{Question:-}$

How long does it take for a magnet to lose its power?

$\huge\bold\pink\bigstar{Answer}$

The answer depends on the magnet. A temporary magnet can lose its magnetization in less than 1 hour. Neodymium magnets lose less than 1% of their strength over 10 years. Permanent magnets such as sintered Nd-Fe-B magnets remain magnetized indefinitely.