The value of mutual inductance can be increased by

decreasing N

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increasing N

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winding the coil on wooden frame

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winding the coil on china clay

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Solution

The correct option is A increasing N
$M = μ N_{1} N_{2} \frac{A r e a_{12}}{l e n g t h_{12}}$

$A r e a_{12}$ - area in common to both the coils where the flux links both of them together.
$l e n g t h_{12}$ - length in common to both the coils where the flux links both of them together.
Therefore to increase the mutual inductance, the number of turns can be increased.

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Similar questions

(i)

(i i)

How does the mutual inductance of a pair of coils change when distance between the coils is increased?

Each one of the following changes will increase emf (or voltage) in a simple generator except :

(a) increasing the number of turns in the armature coil

(b) winding the coil on a soft iron armature

(d) increasing the speed of rotation

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