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Question

Which of the following do not use heating coil?


  1. Electric iron

  2. Electric stove

  3. Microwave oven

  4. Induction cooker


Solution

The correct options are
C

Microwave oven


D

Induction cooker


The microwave oven and induction cooker do not use a heating coil to produce heat. Instead of it, they use microwaves, and Eddy currents (electric current induced in a conductor by a varying magnetic field) respectively. Both electric stove (circlular shape) and electric iron (coil) have heating coils to produce high temperatures.

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