Question

What is magnetic field line and write it's characteristics ?​

Answer 1

Magnetic fields can be pictorially represented by magnetic field lines, the properties of which are as follows: The field is tangent to the magnetic field line. Field strength is proportional to the line density. Field lines cannot cross.

Answer 2

Answer:

Magnetic field lines are a visual tool used to represent magnetic fields. They describe the direction of the magnetic force on a north monopole at any given position. The density of the lines indicates the magnitude of the field. Taking an instance, the magnetic field is stronger and crowded near the poles of a magnet.

1) A magnetic field lines is an imaginary curve along which a free unit north pole tends to move. 3) The tangent to the magnetic field lines at any point gives the direction of magnetic field at that point. 4) Two magnetic field lines never intersect each other. 5) It is vector quantity.