Question

Who invented first electric bulb?

• A. Humphry Davy
• B. Thomas Alva Edison
• C. Benjamin Franklin
• D. Galileo

Answer 1

Answer:

B. Thomas Alva Edison

Thomas Alva Edison invented the first electric bulb in 1879. Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. The first electric light was made in 1800 by Humphry Davy, an English scientist.