Question

Which of the following electric devices works on the principle of electro-magnetic induction?
A. Electric fan
B. Electric bulb
C. Electric cooker
D. L.E.D

Answer 1

Hint:Form the use of electromagnetic induction, the generation of current in the complete circuit is possible for the various application and desired output.

 Complete step by step answer:
In the process of electromagnetic induction, the magnet is used for the generation of the electric current, and this electric current is used to produce some amount of mechanical work with the help of electric devices. The magnitude of the current generated from the magnet depends on the strength of the magnet; if a strong magnet is used in the process of electromagnetic induction, then it will give a large amount of current.

The electric fan works on the principle of electromagnetic induction; the electric fan works by the use of the electric motor. The coil of wires wounded on the metallic core is attached with the electric motor, and then in this arrangement of the wires, the current is passed. Due to the passing of the current through the circular wires, the rotational motion of the motor takes place. Thus, from the use of the electromagnetic induction, the electric fan works and gives the useful output. The construction of the electric fan is cheap, and the cost of manufacturing an electric fan is also low.

So, the correct answer is “Option A”. that is an electric fan.

Note:
When they pass through the circular wires, the magnet generates the strong magnetic near its surrounding and due to this rotation of motor takes place. As electric current passes through the coil of wires, it produces rotational motion due to electro - magnetic induction.