Nikola Tesla Tesla born July 10, 1856 in Croatia. Tesla best know for his contributions design of the modern AC (Alternating Current). Tesla moved to the united states in 1884 and became a citizen in 1891. Then, he worked at Edison Machine works in New York City. With the help of his partners, Tesla set up a labatory. AC. Is a form of a electric power Usually AC is used to power thing with plugs Audio and radio signals use AC AC can run long-distances easily. Tesla first demonstrated the AC motor on May 16 1888 at the American institute of electrical engineers. ////////