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WorksheetsAll About Electric Bulbs
Total questions: 5
Worksheet time: 25secs
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.
