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- The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular to the current.
- Hall coefficient is defined as the ratio of the induced electric field to the product of the current density and the applied magnetic field. It is a characteristic of the material from which the conductor is made, since its value depends on the type, number, and properties of the charge carriers that constitute the current.
- The Hall effect is relevant to a variety of sensor applications; devices based on this relatively simple relationship between current, magnetic field, and voltage can be used to measure position, speed, and magnetic field strength.