science
Grade6
Easy
Question
Which of the following are used as a lighting element in a torch?
- Filament
- LED
- Both a and b
- None of the above
Hint:
Both a and b
The correct answer is: Both a and b
Both LED and Filament are used as a lighting element in a torch but LEDs use much less energy than incandescent bulbs, because diode light is much more efficient, power-wise, than filament light.
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