Hall effect & Hall probe explained | Hall Voltage (V = BI/ntq) | A Level Physics 9702 | Self Learn

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The Hall effect and Hall probe explained for Cambridge A Level Physics (9702): how the Hall voltage builds up, how to derive V_H = BI/(ntq), and how a Hall probe is used to measure magnetic flux density B, with 3D animations, a Paper 5 planning question and a full worked example.

Why does a phone screen switch off the moment you close a magnetic cover? A tiny Hall sensor inside the phone detects the magnetic field. In this lesson we build a Hall probe from the inside, watch the electrons get pushed sideways by the magnetic force, see the electric field build up until qE = Bqv, and turn that balance into the Hall voltage equation you need for the exam.

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Схемы по заработку в интернете
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