A) Calling bell
C) Washing machine
D) All of the above
Correct Answer: D
Solution :Magnets are usually used in appliances with spinning motors such as a sewing machine or a fan. They are also used in heat induction stoves. There is a magnet under the surface which also serves as a heating element. Wherever the pan makes contact, that's where the plate heats up. In a spinning motor, there are 2 rotating magnets, one regular magnet and one electro-magnet. When electricity travels through the electro- magnet, both magnets will spin because either the south or north poles align and then repel each other. The normal magnet is attached to a shaft which spins a gear which eventually will spin whatever it is attached to.
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