Question

explain why two fields line never cross each other at any point​

Answer 1

Answer:

If two field lines will cross each other, then the magnetic compass will have to represent two directions at the same point which is impossible. So, the field lines don't intersect each other.

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Answer 2

Answer:

If two field lines intersect each other at a point then, at the point of intersection (common point) we found two directions of each field line .

so, the two field lines never cross each other.

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