Nobody. Electricity is a natural phenomenon. All civilizations had at least some familiarity with it since there is lightling, static, and electrical effects everywhere. The understanding of how to use it and produce it took many centuries and involved contributions from countless people.
No
No
nobody, it just is.
yes
Heat and/or light.
Resistance
Glass+Electrcity=light
Water condutes electrcity
O
186,000 miles per second
A Uranium mine can not create electricity.
by rubbing two peices of clothing together