Current Carrying Loop As Magnetic Dipole

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Current Carrying Circular Loop-

 

Before you go through this article, make sure that you have gone through the previous article on Magnetic Field At Center of Current Carrying Circular Loop.

 

We have learnt-

  • In 1820, Oersted discovered that a current carrying conductor produces a magnetic field around it.
  • A current carrying circular loop produces a magnetic field around it.
  • The magnetic field at the center of a current carrying circular loop is given by-

 

 

In this article, we will learn about the current carrying circular loop as a magnetic dipole.

 

Current Carrying Circular Loop As A Magnetic Dipole-

 

A magnetic dipole is an arrangement of two equal and opposite magnetic poles separated by some distance.

 

A current carrying circular loop behaves as a magnet / magnetic dipole.

 

The comparison of the magnetic field lines of the circular loop and a bar magnet shows that the two patterns are similar.

 

 

 

On observing the loop from one side,

  • The current seems to flow in anticlockwise direction.
  • Magnetic field lines emerge out the loop from this side.
  • Hence, this side of the loop acts as a North pole.

 

 

On observing the loop from the other side,

  • The current seems to flow in clockwise direction.
  • Magnetic field lines enter the loop from this side.
  • Hence, this side of the loop acts as a South pole.

 

 

Conclusion

  • The side from which the magnetic field lines emerge out the loop acts as North pole.
  • The side from which the magnetic field lines enter the loop acts as South pole.

 

Thus, we say that a current carrying circular loop behaves as a magnet / magnetic dipole.

 

NOTE

It may be noted that every loop whether rectangular, square, hexagonal or elliptical acts as a magnet.

 

This can be verified by studying force on one current carrying loop due to a magnet or another current carrying loop.

 

Example-01:

 

 

Here, the loop and the magnet attract each other.

 

Example-02:

 

 

Here, the two loops attract each other.

 

MCQs Quiz-

MCQs Quiz

on Current Carrying Circular Loop As A Magnetic Dipole

 

Worksheet-

Worksheet

on Current Carrying Circular Loop As A Magnetic Dipole

 

Next Article-

Magnetic Dipole Moment of a Current Carrying Loop

 

Get more notes & other study material of the Chapter Moving Charges & Magnetism.


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