Question

Why should the filament should be thermally isolated?

Answer 1

Answer:

The filament of the bulb works on the principle of heating effect of elecric current. When electric current flows through it ,the filament gets heated to a very high temperature and emits light. To prevent the loss of this heat energy, the filament should be thermally isolated.

Answer 2

$\huge\mathfrak\purple{Answer}$

• The filament of the bulb works on the principle of heating effect of elecric current. When electric current flows through it ,the filament gets heated to a very high temperature and emits light. To prevent the loss of this heat energy, the filament should be thermally isolated.