Two conducting circular loops of radii R1 and R2 are placed in the same plane with their centers coinciding. If R1>>R2, the mutual inductance M between them will be directly proportional to
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a
R1/R2
b
R2/R1
c
R12/R2
d
R22/R1
answer is D.
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Detailed Solution
Mutual inductance between two coil in the same plane with their centers coinciding is given by M=μ04π2π2R22N1N2R1henry.