What does electric current refer to?

Electric current refers to the flow of electric charge through a conductor, typically measured in amperes. When voltage is applied across a conductor, it creates an electric field that pushes the charged particles, usually electrons, to move through the material. This movement of charge constitutes an electric current. Various applications in beauty therapy, such as electrotherapy treatments, rely on this principle, using controlled electric currents to stimulate and benefit skin and muscle tissues.

The other options relate to different aspects of electricity but do not define electric current accurately. The storage of electric energy pertains to capacitors or batteries, resistance to electric flow relates to Ohm's law and describes how much a material opposes current flow, while the generation of electric power involves converting other forms of energy into electrical energy, such as through generators. Each term addresses a distinct concept within the field of electricity.