Question

Why the flament of bulb has high melting point

Answer 1

The filament of bulbs have high melting point because if te melting point is low the the filament will melt

Answer 2

At first I want to say that the filament of bulb is made up of nicrone wire which has more capacity to observe heat and electric current .

Now the filament of bulb has high melting point because if a high voltage current is passed through it then the current can melt the filament having low melting point ,that's why a bulb has high melting point.