Q95 / 180 · AIIMS 2015 · Physics

Mutual inductance of two coils can be increased by

A
decreasing the number of turns in the coils
Correct answer
B
increasing the number of turns in the coils
C
winding the coils on wooden cores
D
None of these

Solution

Mutual inductance of coils, $$ M=\frac{\mu_0 \mu_r N_1 N_2 A}{l} . $$ It is clear that mutual inductance of coils can be increased by increasing the number of turns in the coils.

Hence, the correct answer is option: 'B'.

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