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Electric Bulb

Which of the ...

Question

Which of the following is invented by Thomas Alva Edison?

A

Cell

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B

Switch

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C

Bulb

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D

Wire

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Solution

The correct option is C Bulb
Electric bulb was first invented by Thomas Alva Edison. He made a glass casing and fitted a filament of platinum wire in it. He then removed all the air from within the glass casing. He passed an electric current through the wire and, to his delight, the bulb lit up and did not burn out for eight long minutes.

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