Physics
Grade-7
Easy

Question

It is a part of an electric bulb, and it glows when an electric current is switched on. It is

  1. A filament
  2. An element
  3. A-coil
  4. A bulb

Hint:

A filament

The correct answer is: A filament


    Due to the heating effect of electric current, the bulb glows when the electric current passes through it. The filament of the bulb gets heated to a high temperature and it starts glowing.

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