Where did Thomas Edison invent electricity?
Thomas Edison did not invent electricity. He invented means of making use of electricity.
Why did Thomas Edison study electricity?
Thomas Edison studied electricity, in short, because it was a necessity during his time period. Many scientist studied electricity in efforts to invent a light source like the light bulb, but they failed at their attempt. Thomas Edison finally invented the first incandescent light and demonstrated if publically for the first time in 1879.