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WorksheetsAll About Electric Bulbs
Total questions: 15
Worksheet time: 7mins
Who invented the first practical electric bulb?
Nikola Tesla
Thomas Edison
Benjamin Franklin
Alexander Graham Bell
What year was the electric bulb invented?
1765
1901
1885
1879
Name one type of electric bulb that is energy-efficient.
Halogen bulb
Incandescent bulb
Fluorescent bulb
LED bulb
What is the main difference between incandescent and LED bulbs?
Incandescent bulbs are more energy-efficient than LED bulbs.
Incandescent bulbs last longer than LED bulbs.
Incandescent bulbs use a filament to produce light, whereas LED bulbs use a semiconductor.
LED bulbs produce light using gas instead of a semiconductor.
How does an electric bulb produce light?
Through the process of nuclear fusion.
By converting sound waves into light energy.
An electric bulb produces light by heating a filament until it glows.
By using a chemical reaction to emit light.
What is the role of the filament in an incandescent bulb?
The filament produces light by heating up and glowing when electricity passes through it.
The filament is used to store electrical energy.
The filament acts as a cooling agent to reduce heat.
The filament absorbs light from the surroundings.
What gas is often used in fluorescent bulbs?
Mercury vapor
Carbon dioxide
Nitrogen gas
Argon gas
What are the main components of an electric bulb?
Plastic casing, resistor, solar panel, mercury
Glass cover, copper wire, battery, air
Glass bulb, filament (or LED chip), base, inert gas or vacuum.
Ceramic shell, neon light, switch, water
Why is it important to use the correct wattage for a bulb?
Using any wattage will not affect the bulb's brightness.
The wattage of a bulb is irrelevant to its lifespan.
It is important to use the correct wattage for a bulb to ensure safety and optimal performance.
Higher wattage always results in better energy efficiency.
What safety precaution should you take when changing a bulb?
Turn off the power before changing the bulb.
Use a wet cloth to handle the bulb.
Change the bulb while the power is on.
Replace the bulb without any tools.
What should you do if a bulb breaks?
Ignore it and continue using the room.
Leave the area and do nothing about it.
Wear gloves, pick up large pieces, sweep up smaller shards, and clean the area.
Throw the entire lamp away immediately.
How can you tell if an electric bulb is burnt out?
The bulb is burnt out if it is too hot to touch.
The bulb is burnt out if it has a bright glow.
The bulb is burnt out if it flickers when powered.
The bulb is burnt out if it does not light up when powered, and there are no visible damages.
What is the purpose of a bulb socket?
To provide a secure electrical connection for a light bulb.
To regulate the brightness of the light bulb.
To hold the light bulb in place during installation.
To protect the light bulb from environmental damage.
What type of electric bulb is commonly used in homes?
LED bulbs
Halogen bulbs
Incandescent bulbs
Fluorescent bulbs
Why should you avoid touching a hot bulb with bare hands?
It helps the bulb to shine brighter.
Touching it can improve its lifespan.
It is safe to touch if you are quick.
You should avoid touching a hot bulb with bare hands to prevent burns and potential breakage.
