What is the advantage of an LED bulb over the filament electric bulb ?

Name the material used for filament of an electric bulb,

A thick plane mirror shows a number of images of the filament of an electric bulb. Of these, the brightest image is the

A car bulb connected to a 12 volt battery draws 2 A current when glowing . What is the resistance of the filament of the bulb ? Will the resistance be more, same or less when the bulb is not glowing ?

Figure. Shows two air filled bulbs connected by a U-tube partly filled with alcohol. What happens to the levels of alcohol in the limbs X and Y when an electric bulb placed midway between the bulbs is lighted?

Nitrogen is used to fill electric bulbs because

The resistance of the filament of an electric bulb changes with temperature. If an electric bulb rated 220 volt and 100 watt is connected (220 xx 0.8) volt sources, then the actual power would be

If R_(1) and R_(2) are the resistances of the filaments of 200 W and 100 W electric bulbs operated at 220 V, then ((R_1)/(R_2)) is

Name a non-metal that is : used for filling into electric bulbs,

If bulb rating is 100 walt and 220 V then determine (a) Resistance of filament (b) Current through filament (c ) If bulb operate at 110 volt power supply then find consumed by bulb.

Assertion: Through the same current flows through the line wires and the filament of the bulb but heat produced in the filament is much higher than that in line wires. Reason: The filament of bulbs is made of a material of high resistance and high melting point.