Hall Effect Explained, Electric & Magnetic Field, Drift Velocity & Charge Density Calculations

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This physics video tutorial provides a basic introduction into the hall effect. It explains how a hall effect sensor can be used to measure a magnetic field. It explains how to calculate the electric field across a conductor perpendicular to the current, how to determine the magnetic field, how to calculate the drift velocity of the electrons and the charge density given the hall emf induced by the magnetic field and the current flowing through the material. Whenever electrons flow through a conductor in the presence of a magnetic field, they began to drift to one side of the conductor creating a hall emf with an electric field that is perpendicular to the direction of the current. This hall emf can be used to measure the strength of a magnetic field. This video contains plenty of examples and practice problems.

Magnetic Force on a Current Carrying Wire:


Magnetic Force on a Moving Charge:


The Homopolar Motor:


The Lorentz Force:


Magnetic Field of a Current Carrying Wire:


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Magnetic Sensors - The Reed Switch:


Magnetic Force Between Two Parallel Wires:


Ampere's Law - Magnetic Field of a Solenoid:


Magnetic Field of a Toroidal Solenoid:


Magnetic Field of a Moving Charge:


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Torque on a Loop - Magnetic Dipole Moment:


Magnetic Flux:


Faraday's Law of Electromagnetic Induction:


Lenz's Law - Induced Current:


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Final Exams and Video Playlists:


Full-Length Videos and Worksheets: