If a current (I) is passed through a conducting crystal in a direction perpendicular to that of an applied magnetic field (H), the conductor develops a potential (V) between the faces which are mutually perpendicular to both the direction of current and the magnetic field. The magnitude of the potential difference is given by
where N is the number of current carriers, e is the electronic charge, and d is the distance of separation of the two faces across which the potential is developed.
The Hall effect can be used to test the electrical properties of materials and in ascertaining the strength of magnetic fields. It also forms the basis of the Hall effect thruster.
Related categories ELECTRICITY AND MAGNETISM
ELECTRONICS AND SEMICONDUCTORS
SOLID STATE PHYSICS
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