Two similar circular loops of radius R a...

Two similar circular loops of radius R are lying concentrically with their planes at right angles to each other. The currents flowing in them are `I ` and `Isqrt(3)` respectively. The magnetic field at the centre of the coil is

`(mu_(0)I)/(2R)`

`(mu_(0)I)/R`

`(4mu_(0)I)/R`

`(sqrt(3)mu_(0)l)/R`

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