Physics
Answer
Applications of electromagnets are following:
- An electromagnet is used in electric motors, electric bells, loudspeakers and generators.
- It is employed in magnetic separation equipments for separation of iron ores in industries, for picking up and moving heavy iron objects like scrap iron.
- It is used by doctors to detect and treat a variety of ailments.
- It is used to deflect electronic beam in a television.
- It is used for making strong, permanent magnets.
- The bottom of Maglev trains (the fastest trains in the world) and their tracks both have electromagnets to run the train very fast.
Related Questions
Give examples of natural magnets, artificial magnets, magnetic materials and non-magnetic materials.
How is a magnetic compass useful?
Do you think the strength of the magnet will get affected if you travel with it to a hotter city? Why?
Some of the facts that you have learnt till now are listed below. Tick (✓) the facts that are correct and cross (x) the facts that are incorrect.
(a) Permanent magnets are usually made of steel.
(b) Temporary magnets are usually made of iron and nickel.
(c) Magnets can be made using electricity.
(d) Magnetic lines of force rarely form closed continuous curves.
(e) Demagnetisation is achieved only by hammering.