Explain why, filament type electric bulbs are not power efficient.

Why are the filament-type electric light bulbs not power efficient?

The filament of an electric bulb is made of

The filament of an electric bulb is made of a thin wire of :

The tungsten filaments of two electric bulbs are of the same length. If one of them gives 25 W power and the other 60 W power, then

The tungsten filaments of two electric bulbs are of the same length. If one of them gives 25 W power and the other 60 W power, then

True or false The filament in the electric bulb is made of a wire with high melting point