Question

9.Magnets tend to become weaker after sometime iftheir poles are left free.

What is this process called?List two ways to avoid this.​

Answer 1

Answer:

Usually a magnet does not lose magnetization over time. The mineral Magnetite keeps its magnetization over thousands of years. However, if a magnet is overloaded it loses some of its magnetization immediately. This usually happens if two equal poles are forced together against the repulsing magnetic force, or at increased temperature.

Magnets tend to become weaker after sometime if their poles are left free.  This process called demagnetization.  Two ways to avoid this.​

• Put away each type of magnet in its own space or drawer to prevent demagnetization. The common alnico magnet is the most easily demagnetized.
• Use a magnet keeper to preserve the magnetic charge. You can store horseshoe magnets end-to-end, with opposite poles touching.

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Answer 2

Answer:

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