Question

Why magnetic lines of force travel from north to south?

Answer 1

Hey mate your answer is here...

Magnetic field line depict the direction of magnetic field at any given point. It is easy to draw these field lines by using a magnet and compass .If we place a bar magnet on the piece of paper and put a compass near one end of it and start moving it , we can trace a magnetic field lines . We commonly use a convention that this lines emanate from north pole to the magnet and complete a loop and enter a south pool.

Thus, it is only convention by which we decided to use the direction for these lines , just to insure the everybody is using the same direction .The actual direction may be different.

Hope it will help you.