How an e.m.f. in the primary and secondary coils of a transformer related with the number of turns in these coils?

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How an e.m.f. in the primary and secondary coils of a transformer related with the number of turns in these coils?

Class 10 | Electro Magnetism | ICSE | Physics | Selina

How an e.m.f. in the primary and secondary coils of a transformer related with the number of turns in these coils?

Solution:

The relation is as follows :

E_s/ E_p = N_s / N_p

where s is for secondary and p is for primary.

Explanation :

A source of alternating current is applied to the primary coil in a transformer. As a result, the primary coil current (also known as magnetising current) produces alternating flux in the transformer core. This alternating flux is coupled to the secondary coil, and an emf is induced in the secondary coil due to the phenomena of mutual induction.
Mutual induction occurs when an alternating current flows through a coil, causing an alternating magnetic field to form around it. An alternating current flowing through one coil creates an induced emf across the other linked coils when two or more coils are magnetically coupled together. Mutual induction is the term for this occurrence. It can be deduced from these principles that the emf divided by the number of turns is the same for both main and secondary windings.

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