Electro Magnetic Induction And Alternating Currents Question 550

Question: The number of turns of primary and secondary coils of a transformer are 5 and 10 respectively and the mutual inductance of the transformer is 25 henry. Now the number of turns in the primary and secondary of the transformer are made 10 and 5 respectively. The mutual inductance of the transformer in henry will be [MP PET 1995]

Options:

A) 6.25

B) 12.5

C) 25

D) 50

Show Answer

Answer:

Correct Answer: C

Solution:

$ M=\frac{{\mu_{0}}N_{1}N_{2}A}{l} $



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