How To Measure Magnetic Force

Introduction to the measurement of Magnetic Force:

Magnetic force is the force which is exists around the magnets in an area where the magnetic field exists. The magnetic force is a strong force which arises due to the magnetic fields of the two magnets and this force prevents two magnets to come across from the same pole. The magnetic force can be attractive or repulsive depending upon the poles location. There are two poles of a magnet North pole and the South pole. When two opposite poles come closer then the magnetic force is attractive as in the case of the two opposite charges the electric force is attractive. But when two same poles are closer then the magnetic force is repulsive. The magnetic force around a magnet arises due to the magnetic lines of force which originates outwards from a north pole and terminates inward in a south pole. I like to share this Electric and Magnetic Fields with you all through my article.


Measurement of Magnetic Force


The magnetic force of a bar magnet is measured or detected by the apparatus shown in fig.2. In this apparatus if a floating magnet is released near the North pole of the bar magnet attached to the apparatus then the magnet floats between the north and the south pole of the bar magnet and the motion of the floating magnet is a curved motion along the lines of force of the bar magnet.


If we want to find the magnetic force of a charged particle then it is governed by the equation

F = q (v x B)

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Conclusion on the measurement of magnetic force


In the above equation q is the charge on the particle and v is the velocity of the particle and it is shown in bold because it is a vector quantity and B is the magnetic field. If the

velocity of the charged particle is zero i.e. the charged particle is at rest then the magnetic force exerts by the charged particle is also zero. The magnetic force exerts by a charged particle is also zero in case when the charged particle is moving parallel or anti parallel to the magnetic field and the magnetic force is maximum when the charged particle is moving perpendicular to the field.