Such devices include transformers, relays, motors, etc. MRI scan which is short for Magnetic Resonance Imaging is a device that uses electromagnets. Iron is a magnetic material, and it becomes magnetized when you switch on the current. Electromagnets are magnets that produce magnetic fields when an electric current passes through them. Cranes use huge electromagnets to pick up scrap metal in junkyards. According to ancient Chinese inscriptions, ‘lodestones’ were used in acupuncture treatments. Industrial lifting magnets 3. Even magnets are used to cure cancer. alternating. Stay tuned with BYJU’S to learn more interesting Physics concepts with the help of interactive video lessons. Data storage devices like VCRs, tape recorders, hard discs, etc. Nowadays, tectonic magnets are used by many sportsmen to re… Thus the magnets start to attract scrap metal (junk cars), and carry them to the designated area. The magnetic strength of an electromagnet can be easily altered by varying the amount of electric current and its polarity can be changed by varying the direction of the electric current. They have various use-cases. Like poles repel but opposite poles attract. Electromagnets. Name three devices you see everyday that make use of the relationship between electricity and magnetism to operate. Moving magnetic fields pull and push electrons. Motors … They are also used to sort out the magnetic and non magnetic substances from the scrap. They are used in TV screens, computer screens, telephones and in tape recorders. As its name suggests, a permanent magnet is always magnetized -- think of a kitchen magnet that stays stuck to a refrigerator door for years. Automobiles. Iron metal is the first material used in making magnets. The uses of electromagnets are given here to help learners understand the topic more effectively. Electromagnets are used for various purposes on a day-to-day basis. when the wire loops of a (motor, generator) turns, an electric current is produced. Electromagnets are used in many electric device applications, including: 1. 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