Why magnetic field never intersect each other?

2 Answers
Feb 21, 2018

Two magnetic fields can intersect, but they could repel.

Explanation:

Two of the same kind of poles repel, but opposites attract. The entire field exposed to another at the same time is an impossibility in practicality.

Feb 21, 2018

Because a magnetic field is a vector quantity.

Explanation:

The magnetic field at any point is a vector. For the magnetic fields from 2 nearby sources to intersect at any point would mean that at that point each of the 2 fields maintains its own individual direction.

Two magnetic fields can interact. Imagine that you plan to place magnet A at point A and magnet B at point B which is relatively close to point A. Measure the magnetic field at a third point with only one source at its location at a time. The direction of the fields measured at the third point would be different depending on which magnet was in its place.

Now put both magnets in their spot (magnet A at point A and same for B). Measure the direction of the field at the same third point. The direction would be different from either of the 2 directions measured before. The direction could be predicted using the methods you have learned about finding the resultant of 2 vectors -- any type of vector. The resultant of 2 magnetic field vectors is found the same way as the resultant of 2 force vectors.

I hope this helps,
Steve