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 transformers are made 10
and 5 respectively, the mutual inductance of the
transformer (in henry) will be:
1) 6.25 2) 12.5 3) 25
4) 50
T​

Answer 1

Explanation:

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Answer 2

Answer:

M is proportional to N1 N2

where M is the mutual induction and N1 N2 are the no.of turns in primary and secondary coil respectively.

Interchanging the no. of turns doent change the answer.

hence 3) 25 is the answer.