How are permanent magnets useful?

Uses of Permanent Magnets :

• Magnetic Compass: A permanent magnet is used as the needle in a compass and it helps in navigation by pointing in the north–south direction.

• Refrigerator Doors: Permanent magnets are fitted in the door lining so that the door closes tightly.

• Loudspeakers and Microphones: Permanent magnets are used in televisions, computers, speakers and microphones.

• Toys and Games: Many toys, puzzles, and magnetic boards use permanent magnets.

• Magnetic Locks and Closures: Used in bags, cupboards, and doors for easy locking.

• Credit Cards & ATM Cards: Magnetic strips are used in credit cards and ATM cards to store information.