The History of the Light Bulb Quiz

Who is credited with the invention of the first commercially practical incandescent light bulb?

• Thomas Edison

• The first commercially practical incandescent light bulb was developed by Thomas Edison.

• Nikola Tesla

• Joseph Swan

When was the carbon filament light bulb patented by Edison?

• 1860

• 1901

• The carbon filament light bulb was patented by Edison in 1879.

• 1802

What material was initially used for the filament in early light bulbs?

• Tungsten

• Carbonized bamboo was used for the filament in early light bulbs.

• Copper

• Gold

Why were early light bulbs not very efficient?

• They used too much electricity.

• Early light bulbs were limited by short lifespans and high energy consumption.

• They were too expensive.

• They produced too much heat.

How has the traditional incandescent light bulb been replaced in modern times?

• By candles

• By gas lamps

• The traditional incandescent light bulb has been largely replaced by LEDs and CFLs.

• By oil lamps