Electricity, electronics and electrical engineering

Electricity – the energy of charged elementary particles, supplied as electric current for lightning, heating, driving machines, etc.

(Oxford Advanced Learner’s dictionary)

Considerations related to electric charge dominate electricity and electronics. Electrical charges interact via a field. It is that field which is called electric if the charge doesn't move. If the charge moves, thus realizing an electric current, especially in an electrically neutral conductor, that field is called magnetic. Electricity can be given a quality - a potential. And electricity has a substance-like property, the electric charge. Energy (or power) in elementary electrodynamics is calculated by multiplying the potential by the amount of charge (or current) found at that potential: potential times charge (or current).

Fig.4. An instrument for detecting net charges, the electroscope.