Two identical circular loops P and Q carrying equal currents are placed such that their geometrical axis are perpendicular to each other as shown in figure. And the direction of current appear’s anticlockwise as seen from point O which is equidistant from loop P and Q. Find the magnitude and direction of the net magnetic field produced at the p oint O.

`tan theta = (B_2)/(B_1)=1, theta = pi//4`.

Explanation

`(mu_(0) IR^2 sqrt2)/(2 (R^2 + x^2)^(3//3))`