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As a result of two magnetic fields acting at the same place, the resultant field has a special feature. At
a particular point, if the compass needle does not point in any particular direction, then there is no net
magnetic field at the point. Such a point is called Neutral point or the Null point.A neutral point is a point where the resultant magnetic field is zero.
Figure (a) and (b) shown below illustrate the null points when the magnet is placed in two different
positions.
- http://image.wistatutor.com/seo/contentsprite.png); margin-top: 0.4em; margin-right: 0px; margin-bottom: 0px; margin-left: 1.4em; padding-left: 1.3em; background-position: -1031px -471px; background-repeat: no-repeat no-repeat; ">When the N pole of the magnet points South and the magnet in the magnetic meridian.
- http://image.wistatutor.com/seo/contentsprite.png); margin-top: 0.4em; margin-right: 0px; margin-bottom: 0px; margin-left: 1.4em; padding-left: 1.3em; background-position: -1031px -471px; background-repeat: no-repeat no-repeat; ">When the N pole of the magnet points North and the magnet in the magnetic meridian.
At the two points marked X in figure, the earth's magnetic field and the magnet's field are exactly equal
and opposite and the resultant field is zero. These points are called the neutral points !!!!!!
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