Question

give the characteristics of magnetic field lines

Answer 1

They seek the path of least resistance between opposite magnetic poles. In a single bar magnet as shown to the right, they attempt to form closed loops from pole to pole.They never cross one another.They all have the same strength.Their density decreases (they spread out) when they move from an area of higher permeability to an area of lower permeability.Their density decreases with increasing distance from the poles.They are considered to have direction as if flowing, though no actual movement occurs.They flow from the south pole to the north pole within a material and north pole to south pole in air.

 

Answer 2

Answer:

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• All field lines are closed curves.they come out of the magnet from the side of the north pole and go into it on the side of the South pole. they continue inside the magnet to too. although we cannot draw the lines inside the magnet , we know about them from other observations.

• The field lines are close together near the poles and spread out away from them. the field is stronger where the field lines are more closely spaced.so the field is stronger near the poles than at other points.

• The field lines never intersect. if two field lines were to intersect than a compass needle placed at the point of intersection would point in two different direction which is not possible.