Two conducting circular loops of radii R...

Two conducting circular loops of radii `R_1` and `R_2` are placed in the same plane with their centres coinciding. If `R_1` >> `R_2` the mutual inductance M between them will be directly proportional to

`(R_1)^2/(R_2)`

`(R_2)^2/(R_1)`

`(R_1)/(R_2)`

`(R_2)/(R_1)`

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