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A magnetic field is produced by moving electric charges and intrinsic magnetic moments of elementary particles associated with a fundamental quantum For magnets, like poles repel and opposite poles attract. - A permanent magnet will attract a metal like iron with either the north or south pole. The magnetic behavior of materials can be classified into the following five major groups [1,2]: 1. Diamagnetism 2. Paramagnetism 3. Ferromagnetism 4.to the magnetic behavior of materials. Thus every material can respond to a magnetic field. • However, the manner in which a material responds depend much Magnetic fields are strongest at the poles. The magnetic field lines leave from the north pole and enter the south pole. When holding two bar magnets close to Cutting a bar magnet in half is like cutting a solenoid. We get two smaller solenoids with weaker magnetic properties. The field lines remain continuous, Since ancient times, certain materials, called magnets, have been known to have the property of attracting tiny pieces of metal. This attractive property is The strength of the magnetic field at this point is known as the coercivity or coercive force. HcB. If this reverse magnetic field is increased further, the