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Question: The number of turns of primary and secondary coils of a transformer are 5 and 10 respectively and th...

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

A

6.25

B

12.5

C

25

D

50

Answer

25

Explanation

Solution

M=μ0N1N2AlM = \frac{\mu_{0}N_{1}N_{2}A}{l}