sita made a tester using a cell and the bulb to test the conducting of metals . when the tester was connected to an iron nail, as shown in the image below ,sita observed that bulb glows, explain why the bulb glows ,
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Explanation:
The filament of an electric bulb glows because of the heating effect of electric current. As the current passes through the bulb it heats the filament which gives off light. ... The filament then heats up and becomes red-hot as a result of this it begins to glow, turning electrical energy into light energy.
Answer:
THE bulb glows because the iron nail is a metal and the metal is a good conductor of electricity HENCE,the bulb glows