By using the similar pole repulsion the vehicle is levitated. Magnetic Levitation Trains High-speed magnetic levitation trains, called maglevs, have the advantages of being faster, smoother, and quieter than conventional trains. Several countries, including Japan, Germany, and the United States have maglev train development programs. Electricity and Magnetism Motors and generators work because of the principle of electromagnetic induction, discovered by British scientist Michael Faraday in 1831. This is how a generator works.
Power plants driven by water turbines are a good example.
The turbine turns a shaft, spinning a set of magnets inside a large coil of wire. The magnets induce an electric current in the wire, producing the electricity that lights our homes. An electric motor is the opposite of a generator. In 1820 French physicist Andr Marie Amp re first observed that if a current is passed through a conductor located in a magnetic field, mechanical force results. In other words, in a simple motor there are a bunch of wires wrapped up, called coils.