جزوه دروس زبان تخصصی و زبان فنی * English language courses and technical brochures

What Is Electricity?

Electricity is a form of energy that starts with atoms. Atoms are too small to see, but they make up everything around us. An atom has three tiny parts: protons, neutrons, and electrons. The center of the atom has at least one proton and one neutron. At least one electron travels around the center of the atom at great speed. Electricity can be created by forcing electrons⁴ to flow from atom to atom. When electrons move among the atoms of matter, a current of electricity is created. This is what happens in a piece of wire. The electrons are passed⁵ from atom to atom, creating an electrical current from one end to other. Electric energy is the most popular form of energy, because it can be transported easily at high efficiency and reasonable cost...