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ICSE Class 10 Physics Question 20 of 20

Electro-magnetism — Question 9

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Question

Question 9

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

Answer

E.m.f. in the primary and secondary coils of a transformer are related with the number of turns in these coils as follows —

EsEp\dfrac{E_s}{E_p} = NsNp\dfrac{N_s}{N_p}

where s stands for secondary, p stands for primary, E is E.m.f and N is number of turns in the coils .