We use different types of electrical appliances in everyday life, such as television, microwave, iron or hair dryer. They all work with electricity and the theoretical discipline that establishes their fundamental principles is electrodynamics.
Among all existing materials, some have the ability to carry electricity and are known as conductive materials, while those that cannot pass electricity are called insulators. Metals transmit electricity because they have free electrons in their internal structure and these allow movement (every electrodynamic phenomenon necessarily implies a certain movement of electrons). Electrodynamics
The movement between electrons is called an electrical current . Every electric current occurs against the electric field existing within a given material.
When there is a movement opposite to an electrical force, it means that work is being done on some particle.
Electric charges that move through a conductor from one point to another produce a potential difference between them as a consequence of the electric field generated. The electric field exerts a force called work and is measured in joules. Electrodynamics
When the atoms’ electrons flow together in the same direction, it produces electricity. The amount of electricity that can flow through a wire over a period of time is called an electrical current and is measured in amperes.
When electricity flows, we speak of electrodynamics, while when it remains static, the discipline that studies this type of phenomenon is electrostatic (the unit of measurement for electrostatics is the coulomb and its fundamental principle is the Coulomb law).
Electricity is a form of energy that manifests itself in all kinds of natural phenomena: in the formation of lightning during storms, in the movement of muscles in living beings or in human contact with some natural tissues. On a small scale , this type of phenomenon is invisible and difficult to detect. The theoretical knowledge of electrical phenomena began in the 18th century with the contributions of the French Coulomb and the North American Benjamin Franklin.
From theory to practice, in a few years the Italian Alessandro Volta invented the electric battery and Thomas Alva Edison the incandescent lamp.
While Coulomb is considered the father of electrostatics, André-Marie Ampère, Michael Faraday and James Clerk were the forerunners of electrodynamics and electromagnetism.