Concept of Motor and Generator

This is very useful, as we can use to convey energy from one place to another, using metal wires as conduits for this energy. This is the basic idea behind electric power systems: a source of power (a generator ) is turned by some mechanical engine (windmill, water turbine, steam engine, etc.), creating an electric potential. This potential is then used to motivate free electrons inside the metal wires to drift in a common direction. The electron drift is conveyed in a circuit through long wires, where they can do useful work at a load device.

Given the proper metal alloys, the friction that electrons experience within the metal wires may
be made very small, allowing nearly all the energy to be expended at the load (motor), with very little
wasted along the path (wires). This makes electricity the most efficient means of energy transport
known.The electric currents common in electric power lines may range from hundreds to thousands of
amperes. The currents conveyed through power receptacles in your home typically are no more than 15 or 20 amperes.