Question

What is the value of the resultant magnetic field at a neutral point?

Answer 1

Neutral point:

1. A point where the resultant magnetic field is zero is called a neutral point.
2. It is possible only in the presence of two magnetic sources.
3. At the neutral point, the magnetic field due to the magnet is equal and opposite to that of another magnet.
4. The neutral point can change its position according to the orientation of the magnetic field.

An illustrative diagram of the neutral point is shown below: (neutral points are shown with ‘X’)

Therefore, at the neutral point, the magnetic force due to all sources is zero, so the resultant force at a neutral point is zero.