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Two conducting circular loops of radii R1 and R2 are placed in the same plane with their the centres coinciding.

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Two conducting circular loops of radii R1 and R2 are placed in the same plane with their the centres coinciding. If R1 > R2, the mutual inductance M between them will be directly proportional to

(a) R1/R2

(b) R2/R1

(c)  R12/R2

(d)  R22/R1

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1 Answer

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Best answer

Correct option (d)  R22/R1

Explanation:

Magnetic field at the centre of primary coil

Considering it to be uniform, magnetic flux passing through secondary coil is

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