Tungsten is used for the construction of filament in electric bulb because of its

Tungsten is the preferred material for incandescent bulb filaments primarily due to its exceptionally high melting point, which is approximately 3,422°C (3,695 K). This property allows the filament to be heated to extreme temperatures necessary for incandescence—the emission of visible light—without melting or losing structural integrity. While tungsten has a relatively low specific resistance (resistivity) compared to insulators, it is drawn into a very thin, long, and coiled wire to achieve the high electrical resistance required to generate sufficient heat via Joule heating (P = I²R). Additionally, tungsten exhibits a low rate of evaporation at high temperatures, which prevents the filament from thinning too quickly and ensures a longer operational life for the bulb. Its combination of thermal stability and mechanical strength makes it uniquely suited for this application.