Write 3 practical applications of electromagnet
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1. Security systems use locking systems for doors which are generally magnetic locking systems. These systems are unlocked either by a magnetic card swiping or having a security code.
2. Magnetic card reader on the doors reads the number of keys stored in the magnetic tape of the card. When key stored in memory matches with data on the card, then the door opens.
3.
Entertainment system like television, radio or stereo systems use loudspeaker. This device consists of electromagnet which is attached to the membrane or cone surrounded by the magnetic flux produced by the permanent magnet.
2. Magnetic card reader on the doors reads the number of keys stored in the magnetic tape of the card. When key stored in memory matches with data on the card, then the door opens.
3.
Entertainment system like television, radio or stereo systems use loudspeaker. This device consists of electromagnet which is attached to the membrane or cone surrounded by the magnetic flux produced by the permanent magnet.
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Uses of Electromagnets. Electromagnets are used in all kinds of electric devices, including hard disk drives, speakers, motors, and generators, as well as in scrap yards to pick up heavy scrap metal. They're even used in MRI machines, which utilize magnets to take photos of your insides!
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