A current loop is similar to a :

CONCEPT:

• When a circular loop is associated with the current I, it starts to act as a magnet and its magnetic moment is find as given below.

• Magnetic moment (μ): The magnetic strength and orientation of a magnet or other object that produces a magnetic field.
  • It is a vector quantity associated with the magnetic properties of electric current loops.
  • It is equal to the amount of current flowing through the loop multiplied by the area encompassed by the loop.

μ = N i A 

where μ is the magnetic moment, A is the area of the coil, N is no. of turns and I is current in the coil.

• Its direction is established by the right-hand rule for rotations.

EXPLANATION:

• From the above, it is clear that a circular loop is considered as a magnetic dipole, then the dipole moment is the product of current and area.