Was Edison Ac or Dc?

While Edison championed direct current (DC) systems, Westinghouse promoted alternating current (AC) systems, and the competition between the two was fierce.

Was Tesla AC or DC?

Serbian-American engineer and physicist Nikola Tesla (1856-1943) made dozens of breakthroughs in the production, transmission and application of electric power. He invented the first alternating current (AC) motor and developed AC generation and transmission technology.

Did Edison's light bulb use AC or DC?

Although it was successful, Edison's system had problems and limitations. It used direct current (DC), which was not ideal for delivering electricity over long distances. Alternating current (AC) was better suited to the job.