Question

What is meant by the neutral point of the magnetic field?

Answer 1

1. The magnetic field at a location is the vector sum of the multiple magnetic fields created by a magnet and the earth.
2. The formula $\stackrel{\rightharpoonup }{B_M}+\stackrel{\rightharpoonup }{B_E}$is used to compute the net magnetic field.
3. A magnet's magnetic field is equal to and opposite that of the earth's magnetic field at a neutral location. From a mathematical sense, $\stackrel{\rightharpoonup }{B_M}=\stackrel{\rightharpoonup }{-B_E}$ indicates that $\stackrel{\rightharpoonup }{B_M}+\stackrel{\rightharpoonup }{B_E}=0.$
4. Two magnetic fields of the same magnitude but in opposite directions meet at neutral locations.
5. The net magnetic field is zero in a neutral environment.
6. A compass needle positioned at the neutral point will fall to the ground in any direction, revealing the neutral point's location.
7. There will be two neutral spots if the magnet is directed towards the earth's geographical north pole.
8. The equator will be the location of both neutral points.
9. If the south pole of the magnet is pointed towards the geographical north pole of the earth, there will be two neutral locations, both of which will be on the magnet's axial line or axis.
10. We can observe that if the magnet is turned by an angle of 180 degrees, the neutral point changes its location by an angle of 90 degrees. In general, if the magnet is rotated by an angle of$\frac{\theta }{2}$, the neutral point will shift to a new place.