Multiple choice general knowledge

Who Invented the light bulb??

  1. Thomas Edison

  2. Isaac Newton

  3. Leonardo da vinci

  4. Joseph Swan
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Joseph Swan patented a working light bulb in 1878, before Edison's 1879 patent. Edison commercialized and improved it, but didn't invent the first one.

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