Two identical short bar magnets are placed at 120° as shown in the figure. The magnetic moment of each magnet is M. Then the magnetic field at the point P on the angle bisector is given by


(1) µ 0 4 π · M d 3                 (2) µ 0 4 π · 2 M d 3                (3)   µ 0 4 π · 2 2 M d 3              (4) Zero

Dear Student,
                       Net magnetic moment of the system =M2+M2+2MMcos(120)=Mand direction tan(θ)=Msin(120)M+Mcos(120)=3θ=600so dopole moment will be in P direction.and Magnetic field =μ04πMd3
Regards

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