Question

Which of the following does not work on the principle of heating effect of electric current?

• A. Electric kettle
• B. Water pump
• C. Rice cooker
• D. Microwave oven

Answer 1

The correct option is B Water pump

Appliances that work on the principles of heating effect of electric current converts electrical energy into heat. An electric kettle, a rice cooker and a microwave oven convert electrical energy into heat that is utilised in cooking food or boiling a liquid. Whereas a water pump converts electrical energy into mechanical energy that is used in pumping water. So, it has nothing to do with the heating effect of electric current.