Due to current through side AB Magnetic field at the centre O B1 =
µ0I
4πa
[sinθ1+sinθ2]
As the magnetic field due to each of the 24. For a dipole at position (R, Q) three sides is the same in magnitude and direction. ∴ Total magnetic field at O is sum of all the fields. i.e. B = 3B1 =