Figure shows a coil of single turn wound...

Figure shows a coil of single turn wound on a sphere of radius R and mass m. The plane of the coil is parallel to the plane and lies in the equatorial plane of the sphere. What is the value of B if the sphere is in equilibrium when current in the coil is I?

`(mgcostheta)/(piiR)`

`(mg)/(piiR)`

`(mg tantheta)/(piiR)`

`(mgsintheta)/(piiR)`

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