Why Tungsten is used in Electric bulb?

Question

Answer

Here is your answer--

Tungsten is used for making filament of an electric bulb due to the following reasons:

Being an alloy it has a very high melting point

It has very high resistivity so it does not burn easily at room temperature

The lamp glows at high temperatures

Answer

Coz tungesten being highest melting point

Answer

ᬊ᭄廴――ɧễɾễ îŝ ყỡᶙя ȁᴎṥŵḗɾ , Ɓɾừɧ――廴ᬊ᭄

⇒ ᴛʜᴇ ғɪʟᴀᴍᴇɴᴛ ᴜsᴇᴅ ɪɴ ᴀɴ ᴇʟᴇᴄᴛʀɪᴄ ʙᴜʟʙ ʜᴀs ᴛᴏ ɢᴇᴛ ʜᴇᴀᴛᴇᴅ ᴜᴘ ᴛᴏ ᴀ ᴠᴇʀʏ ʜɪɢʜ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪɴ ᴏʀᴅᴇʀ ᴛᴏ ᴇᴍɪᴛ ʟɪɢʜᴛ .

• ɪғ ᴀ ғɪʟᴀᴍᴇɴᴛ ᴏғ ʟᴏᴡ ᴍᴇʟᴛɪɴɢ ᴘᴏɪɴᴛ ɪs ᴜsᴇᴅ ɪᴛ ᴡɪʟʟ ᴍᴇʟᴛ ᴀɴᴅ ᴛʜᴇ ʙᴜʟʙ ᴡɪʟʟ ʙᴇᴄᴏᴍᴇ ᴜsᴇʟᴇss . ᴛʜᴇʀᴇғᴏʀᴇ , ᴡɪʀᴇs ᴏғ ʜɪɢʜ ᴍᴇʟᴛɪɴɢ ᴘᴏɪɴᴛs ᴀʀᴇ ᴘʀᴇғᴇʀʀᴇᴅ .

→ TᑌᑎᘜՏTᗴᑎ IՏ ᑌՏᗴᗪ ᗩՏ ᗷᑌᒪᗷ ᖴIᒪᗩᗰᗴᑎT ᗷᗴᑕᗩᑌՏᗴ :-

¹. ʰᵃᵛⁱⁿᵍ ʰⁱᵍʰ ᵐᵉˡᵗⁱⁿᵍ ᵖᵒⁱⁿᵗˢ .
². ᵖʳᵉᵛᵉⁿᵗ ᶠʳᵒᵐ ᵒˣⁱᵈᵃᵗⁱᵒⁿ .
³. ᵍᵒᵒᵈ ᶜᵒⁿᵈᵘᶜᵗᵒʳ ᵒᶠ ᵉˡᵉᶜᵗʳⁱᶜⁱᵗʸ .
⁴. ʰᵃᵛⁱⁿᵍ ˡᵒʷ ʳᵉˢⁱˢᵗⁱᵛⁱᵗʸ .

|| ʜᵒᵖᴇ ɪᵗ ʜᵉˡᴘᶠᵘʟ ||

Answer

Answer

Tungsten is used in electric bulb because it has high melting point and it does not oxidize. Thus tungsten filament does not melt even when a large amount of heat is produced due to passage of current through the filament (via heating effect of current).

Answer

Tungsten is used for making filament of an electric bulb due to the following reasons:

Being an alloy it has a very high melting point

It has very high resistivity so it does not burn easily at room temperature

The lamp glows at high temperatures

Answer

Tungsten in Electric Bulbs
Electric bulbs, particularly incandescent bulbs, utilize tungsten as the filament material due to its unique properties. Below are the key reasons why tungsten is the preferred choice:
High Melting Point
- Tungsten has an exceptionally high melting point of about 3422°C (6192°F).
- This allows it to withstand the extreme temperatures generated during electricity flow without melting.
Good Electrical Conductivity
- Tungsten exhibits excellent electrical conductivity, enabling a smooth flow of electric current.
- This property ensures bright illumination when the filament is heated.
Durability and Strength
- Tungsten is one of the strongest metals, making it resistant to deformation.
- Its durability helps prevent breakage during manufacturing and usage.
Efficient Light Production
- When heated, tungsten efficiently converts electrical energy into light.
- Compared to other metals, tungsten produces a warm light that is pleasant to the eyes.
Low Vapor Pressure
- Tungsten has a low vapor pressure even at high temperatures.
- This characteristic minimizes the evaporation of the filament, prolonging the bulb’s lifespan.
Conclusion
Tungsten’s high melting point, electrical conductivity, durability, efficient light production, and low vapor pressure make it the ideal choice for electric bulbs. These properties not only enhance performance but also ensure longevity, contributing to the widespread use of tungsten in the lighting industry.

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