Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be:
(a) (b) (c)
maximum in situation (a)
maximum in situation (b)
maximum in situation (c)
the same in all situations
When current flows in any of the coils, the flux linked with the other coil will be maximum in the first case. Therefore, mutual inductance will be maximum in case (a).
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