Electricity

Electricity (from the Greek ήλεκτρον élektron, whose meaning is ‘amber’) [1] is the set of physical phenomena related to the presence and flow of electric charges. It manifests itself in a wide variety of phenomena such as lightning, static electricity, electromagnetic induction or electric current flow. It is a form of energy so versatile that it has countless applications, for example: transport, air conditioning, lighting and computing. [2]

Electricity manifests itself through various phenomena and physical properties:

Electric charge: a property of some subatomic particles, which determines its electromagnetic interaction. Electrically charged matter produces and is influenced by electromagnetic fields.
Electric current: the flow of electrons that circulates through a conductor at a certain moment. It is measured in amps.
Electric field: a type of electromagnetic field produced by an electric charge, even when it is not moving. The electric field produces a force on every other charge, the smaller the distance between the two charges. In addition moving loads produce magnetic fields.
Electric potential: it is the work that an external force must carry out to attract a positive unit charge that, from the reference point to the point considered, goes against the electric force and at a constant speed.
Magnetism: electric current produces magnetic fields, and time-varying magnetic fields generate electric current.