Bar Magnet: uses and its properties


1) We everyone familiar with Bar magnet.


2) Our earth also behaves like a Bar magnet.


3) Every magnet has two poles, north pole & south pole.


4) North pole attracts south pole of an another magnet similarly south pole attracts north pole of an another magnet.


5) Again north pole-repels north pole of an another magnet, and south pole repels south pole of an another magnet.


6) If you place a sheet of glass over a bar magnet, and then sprinkle some iron filings on this sheet. The iron filing rearrange in a pattern as shown below. 




 

7) the iron patterns shows that the attraction is maximum at the two ends of the Bar magnet. And these two are called poles of the magnet.


8) Which is similar to the positive and negative charge in an electric dipole.


9) All of these lines of irons are called magnetic field lines of the Bar magnet.


10) As you can see, at the poles the magnetic lines have high density, high density means higher magnetic field strength.


11) No two magnetic lines cross-each other, or they never intersect one another.