5. 12 (b). A short bar magnet has a magnetic moment of Give the direction and magnitude of the magnetic field produced by the magnet at a distance of 10 cm from the centre of the magnet on the equatorial lines (normal bisector) of the magnet.
On the equatorial axis,
Distance,d = 10cm = 0.1 m
We know, the magnetic field due to a bar magnet along the equator is:
Therefore, the magnetic field on the equatorial axis, B = 0.48 G
The negative sign implies that the magnetic field is along the N−S direction.
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