The filament in an electric lightbulb is made of which material?

The filament in an electric lightbulb is made of tungsten because of its high melting point and excellent conductivity properties. Tungsten can withstand the intense heat generated when electric current passes through it without melting, which allows it to glow brightly and produce light. Its robust nature ensures that it can last longer than filaments made from other materials, which might fail under the same conditions. While copper and aluminum are good conductors of electricity, they do not have the necessary heat resistance for use as filaments in lightbulbs. Iron, although it was used in early lightbulb designs, is less effective than tungsten due to its lower melting point and higher tendency to oxidize and wear out rapidly.