Question

Heating effect of electric current is used in___.

• A. Filament bulb
• B. An iron
• C. Microwave oven
• D. All of the above

Answer 1

The correct option is D

All of the above

All three i.e. an iron, a filament bulb, and microwave oven have metal coils inside. After the passage of current the temperature of these coils go so high, they even release light in case of a bulb along with the heat. In an iron, and oven the heat released by these coils is used to press clothes and make food items hot respectively.