Advanced countries are making use of powerful electromagnets to move trains at very high…

Advanced countries are making use of powerful electromagnets to move trains at very high speed. These trains are called maglev trains (abbreviated from magnetic levitation). These trains float on a guideway and do not run on steel tail tracks.
Instead of using an engine based on fossil fuels, they make use of magnetic field forces. The magnetized coils are arranged in the guideway which repel the strong magnets placed in the train’s under carriage. This helps train move over the guideway, a technic called electro-dynamic suspension. When current passes in the coils of guideway, a typical magnetic field is set up between the undercarriage of train and guideway which pushes and pulls the train along the guideway depending on the requirement.
The lack of friction and its aerodynamic style allows the train to move at very high speed.

The force which makes maglev move is