What were the first functions of electricity?

The first functions of electricity was the light-bulb. The history of the electric light dates from 1800. Precisely in 1801, a chemist named Humphry Davy discovered that by passing an electric current through a platinum filament, they shone for a few minutes, the principle was, but it was not convenient at that time. It is generally recognized to Thomas Alva Edison in the United States and who invented the lightbulb, but it is interesting that in Great Britain is credited with the invention to Joseph Wilson Swan.