What are magnetic field lines ? How is the direction of a magnetic field at a point determined?
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the region surrounding the magnet,in which the force of the magnet can be experienced, is called magnetic field . The lines along which the iron fillings align themselves represents magnetic lines of force.
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The magnetic field can be defined as:
“A region around/surrounded by a moving electric charge or a magnetic material within which the force of magnetism acts.”
How does Magnetic Field occur?
If you are wondering how Magnetic fields occur. Well, it occurs whenever a charge is in motion. That being said if you apply more charge in the motion the strength of a magnetic field usually increases. Besides, Magnetism and magnetic fields are part of the electromagnetic force which is indeed one of the four prime forces of nature.
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