Question

principle on which solar cooker,electric bell,transformer,dynamo generator works.

Answer 1

Solar cooker- A solar cooker gets heated by using the heat energy radiated by the sun and this heat is used to cook food.
Electric bell-The working of electric bell is based on the electromagnet principle.
Transformer-Transformer works on the principle of mutual induction.
Dynamo generator-Dynamo is an electric generator that converts mechanical energy into electrical energy but its output is direct current.