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Characteristics of madnetic field

Answer» A magnetic field lines is an imaginary curve along which a free unit north pole tends to move.Magnetic field lines always starts from north pole and end on south poleThe tangent to the magnetic field lines at any point gives the direction of magnetic field at that point.Two magnetic field lines never intersect each other.It is vector quantity.They always form closed loops.Magnetic field lines passing through unit area around a point w.r.t. the strength of the magnetic field at that point is called Magnetic flux density.??
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