A long bar magnet has a pole strength of 10 Am. Find the magnetic field at a point on the axis of the magnet at a distance of 5 cm from the north pole of the magnet.
Given: - M = 10Am
r = 5cm =0.05m =
m
we now that, μ0 = 1.257 x 10 -6 henry per meter
π = 3.142
We need to find the magnetic field due to magnetic charge B is given by
2