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The Hall effect is the production of a potential difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current.
11 sie 2024 · The Hall effect occurs when a magnetic field is applied at a right angle to an electric current flowing through a conductor. As a result, a voltage is created across the conductor, perpendicular to both the electric current and the magnetic field.
A Hall effect sensor uses a simple wafer of semi-conductive material that comprises the circuit. It works when a magnet is put near an electric current, deflecting the electrons. The closer the magnet, the more resultant deflection for the electrons.
Compare how charge carriers move in a conductive material and explain how this relates to the Hall effect. In 1879, E.H. Hall devised an experiment that can be used to identify the sign of the predominant charge carriers in a conducting material.
Hall effect sensors are used to measure rotation speed of motors, fans, tape machines, and disk drives [57]. Relatedly, Hall effect devices are used as flow rate sensors. These sensors are found in devices ranging from water softeners to ocean current monitors [57].
18 wrz 2024 · Hall effect, development of a transverse electric field in a solid material when it carries an electric current and is placed in a magnetic field that is perpendicular to the current. This phenomenon was discovered in 1879 by the U.S. physicist Edwin Herbert Hall.
Hall effect devices are direct energy conversion devices that convert energy from a magnetic field to electricity. The physics behind these devices is described by the Lorentz force equation.
