4. Name two devices which are based on the use of electromagnet?
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Electromagnets are very widely used in electric and electromechanical devices, including:Motors and generators.Transformers.Pickups.Relays.Electric bells and buzzers.Loudspeakers and headphones.Actuators such as valves.Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.
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Some everyday devices that have electromagnets inside them are, Microphones, speakers, headphones, telephones and loudspeakers. Electric motors and generators. Doorbells and electric buzzers.
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