Question

Nitrogen gas filled in bulbs because to______. a) increase the brightness of bulb
b) increase the life of filament
c) decrease the power of bulb
d) decrease the loss of current​

Answer 1

Answer:

c) decrease the power of bulb

c is right option

Answer 2

Answer:

b) increase of filament life

Explanation:

reduce evaporation of the filament and prevent its oxidation.