All About Electric Bulbs

What is an electric bulb used for?

• To charge batteries.

• To heat water.

• To provide light.

• To cook food.

Who invented the first practical electric bulb?

• Nikola Tesla

• Thomas Edison

• Alexander Graham Bell

• Benjamin Franklin

What are the main components of an electric bulb?

• Glass cover, copper wire, battery, air

• Glass bulb, filament (or LED chip), base, inert gas or vacuum.

• Ceramic base, mercury vapor, switch, neon gas

• Plastic casing, resistor, diode, helium

What is the function of the filament in a bulb?

• The filament produces light by heating up due to electrical resistance.

• The filament cools down to produce light.

• The filament acts as a power source for the bulb.

• The filament absorbs light from the surroundings.

How does a LED bulb differ from an incandescent bulb?

• LED bulbs are made of glass and are more fragile than incandescent bulbs.

• Incandescent bulbs are more energy-efficient and last longer than LED bulbs.

• LED bulbs produce light through gas discharge, while incandescent bulbs use LEDs.

• LED bulbs are more energy-efficient, have a longer lifespan, emit less heat, and use diodes for light production, unlike incandescent bulbs that use heated filaments.