As a result, the incandescent lamp is widely used both in household and commercial lighting, for portable lighting such as table lamps, car headlamps, and flashlights, and for decorative and advertising lighting.
Modern incandescent bulbs are not energy efficient – less than 10% of electrical power supplied to the bulb is converted into visible light.
The remaining energy is lost as heat.
However these inefficient light bulbs are still widely used today due to many advantages such as: wide, low-cost availability.
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