Reverse Magnetism in Bar Magnet: Physics Theory Explained

[WarFace]

Explain, using the domain theory, why a strong external magnetic field can reverse the magnetism in a bar magnet.

If anyone can provide me a source for this question or would like to answer it, it would be much appreciated.

 

[Mapes]

Hi WarFace, welcome to PF. One online reference is the Wikipedia article http://en.wikipedia.org/wiki/Magnetic_domains" . Have you read it?