In a filament type light bulb, most of the electric power consumed appears as:

In a filament-type bulb, a lot of electric energy is wasted in the form of :

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

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

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

Four identical bulbs each rated 100 watt, 220 volts are connected across a battery as shown. The total electric power consumed by the bulbs is:

Four identical bulbs each rated 100 watt, 220 volts are connected across a battery as shown. The total electric power consumed by the bulbs is:

The filament of an electric bulb is made of