Question

4 properties of magnetic field lines

Answer 1

magnetic field lines are imagery line used to represent magnetic field 
Characteristics are as follows:






1.they do not intersect each other 



2.the relative strength of magnetic field lines is given by the degree of closeness



3.their direction is indicated by arrows in the line at any point




4.the direction of field line inside the magnet is from south to north pole and vice-versa outside the magnet

Answer 2

Answer:

See below

Explanation:

1) A magnetic field lines is an imaginary curve along which a free unit north pole tends to move.

2) Magnetic field lines always starts from north pole and end on south pole

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.

6) They always form closed loops.

7) 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.

OR

1) Magnetic field lines are representation of magnetic field.

2) Magnetic field lines forms closed loops.

3) They contact laterally.

4) They behave like stretched elastic rubber strings.

5) Magnetic fields lines always form closed loops.

6) Magnetic field lines do not intersect each other.

7) More the number of magnetic field lines, more strong in the magnetic field.

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