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Symbols of the metal used to make filament of bulb
- W: Tungsten is the metal commonly used to make filaments in light bulbs. It has a high melting point and is able to withstand the high temperatures generated by the electric current passing through the filament.
- K: Potassium is a chemical element, not commonly used in light bulb filaments.
- V: Vanadium is another metal that is not typically used in light bulb filaments.
- U: Uranium is a radioactive metal and is not used in light bulb filaments due to safety concerns.
Tungsten is the most commonly used metal for light bulb filaments because of its high melting point, durability, and ability to emit a bright light when heated. It is a crucial component in incandescent light bulbs, which have been widely used for over a century. Tungsten filaments allow for a consistent and long-lasting light source, making them a popular choice for various lighting applications.