Question

The magnetic moment is a vector quantity whose direction is from South Pole to North Pole
A. True
B. False

Answer 1

Hint: Consider a bar magnet. Imagine putting it in an external magnetic field. It will point in the direction of the magnetic field. Magnetic moments can be defined as the quantity that can give the strength or orientation of a magnet.

Complete answer:
Any object or any material that exhibits the properties of magnetism can be called a magnet. A magnetic dipole can be defined as the magnetic north pole and the magnetic South Pole, separated by a small distance.
The magnetic dipole moment can also be described as the component of magnetic moment. The dipole magnetic moment of a bar magnet can also be described as the product of pole strength and the magnetic length.

Unit of magnetic moment is ampere-meter squared$(A{{m}^{2}})$. Its dimension is$[{{L}^{2}}A]$.
If dipole moment is a vector quantity for a bar magnet the direction of the dipole moment is from South Pole to North Pole.

Hence the answer is true.

So, the correct answer is “Option A”.

Additional Information:
If we place a magnet or magnetic material in an external magnetic field it will experience a torque. The magnetic dipole moment of the object can be described in terms of the torque experienced by the object in the external magnetic field.
$\tau =\mu \times B$$\tau =\mu B\sin \theta $
The magnitude will be $\tau =\mu B\sin \theta $
Where $\tau $the torque experienced by the magnet is, $\mu $ is the magnetic dipole moment and B is the external magnetic field.

Note:
Considering the bar magnet as a current loop the direction of the dipole moment will be from the South Pole and North Pole of the magnet. Hence, the other option is invalid. Magnetic dipole moments have dimensions of current time’s area or energy divided by magnetic flux density. The unit for dipole moment in meter-kilogram-second-ampere.