MCQ
A glowing bulb becomes warm due to the:
  • Heating effect of current.
  • B
    Magnetic effect of current.
  • C
    Chemical effect of current.
  • D
    Physical effect of current.

Answer

Correct option: A.
Heating effect of current.
Glowing electric bulbs becomes warm due to the heating effect of electric current.
The current flowing through the filament of the bulb heats up the filament due to Joules heating and the bulb glows.
The heat that is responsible for the production of light in the filament heats up the bulb.

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