what is magnetic field lines,give three points
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Magnetic field line is a line such that the tangent at any point on it gives the direction of the magnetic field at that point.
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When iron filings are spread around a bar magnet, we can see that they do so in a pattern of concentric loops, passing inside and out the magnet. These loops are magnetic field lines.
The number of field lines in an area gives the strength of magnetic field at that point. Field lines DO NOT give the direction of magnetic force.
Field lines form closed and continuous loops. They go from north to south outside the magnet and from south to north inside the magnet.
The number of field lines in an area gives the strength of magnetic field at that point. Field lines DO NOT give the direction of magnetic force.
Field lines form closed and continuous loops. They go from north to south outside the magnet and from south to north inside the magnet.
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