Question

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Answer 1

1. Compact fluorescent lamps (CFLs) use 75% less energy and put off 75% less heat than traditional incandescent bulbs, and last 10 times longer. These energy-efficient bulbs have been growing in popularity in recent years.
2. Filaments in incandescent light bulbs are made of tungsten. Whenever an electric current goes through the filament, the filament glows. It may also be known as the electron emitting element in a vacuum tube.
3. A continuous, unbroken path through which electric current can flow is called circuit.
4. The earthing is essential because of the following reasons:

• The earthing protects the personnel from the shortcircuit current.
• The earthing provides the easiest path to the flow of shortcircuit current even after the failure of the insulation.
• The earthing protects the apparatus and personnel from the high voltage surges and lightning discharge.

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Answer 2

Answer:

i know 3 ans

Explanation:

L E D

tongsten

circuit