In which of the following an electric motor is not used

SOLUTION

CONCEPT:

• Electric motor: The device in which electrical energy is converted into mechanical energy is called an electric motor.

An electrical motor is connected to battery as shown below:

• From this, we can say that first, the battery will convert chemical energy to electrical energy as soon as the circuit is turned on and this electrical energy will be converted into mechanical energy by an electrical motor.

EXPLANATION:

• Electric toaster converts electric energy into heat which is used to cook food.
• There is no electric motor in an electric toaster. So option 1 is correct.
• In the computer, electric fan, and refrigerator, there is an electric motor that converts the electrical energy into mechanical energy and performS their respective work.