Which of the two is more energy efficient: filament type electric bulb or CFL? Why?

A CFL (compact fluorescent lamp) is more energy-efficient than a filament type electric bulb. The reason behind this is,  a CFL consumes much less electrical energy while a filament-type electric bulb wastes much energy as heat.

Explanation

A "Compact fluorescent lamp" (CFL) works on the principle of ionisation. Instead of a glowing filament, it contains argon and mercury vapour housed within a spiral-shaped tube. This, make it an energy-efficient device, as it consumes much less electrical energy.

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Updated on: 10-Oct-2022

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