Question

A generator works on the principle of ______________

Answer 1

Hint:Faraday’s law of electromagnetic induction is the law used to predict how a magnetic field will interact with the current to produce an electromotive force (EMF). This process of producing electromotive force is also known as electromagnetic induction.

Complete answer:
A generator is a device that is used to convert mechanical energy into electrical energy. When the conductor loop in a generator moves in a magnetic field, the flux inside the conductor also changes. With the change in the flux inside the conductor, an EMF will be induced in the generator, as a result, a current will be produced in the generator.

Working: A generator consists of a conductor loop which is attached to the iron cores. When this conductor loop will rotate in the magnetic field, EMF will be induced in the generator. With the induction of EMF, a current will get produced in the generator because the flux linked with the loop tends to change sinusoidally. Therefore, the EMF produced in the generator is given by
$\varepsilon = \dfrac{{dQ}}{{dt}}$
Where, $\varepsilon $ is the EMF induced in the generator and $Q$ is the flux inside the loop.

Therefore, a generator works on the principle of electromagnetic induction.

Note:Generators do not create electricity, in fact, they use the mechanical energy supplied to them to enable the movement of charge present in the wire. These charges will move through an external electrical circuit. This flow of electrons will generate the electric current in the generator. The common examples of generators are steam turbines, gas turbines, wind turbines, etc.