alleryStart learning →A Hall probe is one of the most common instruments built on the Hall effect. What does it measure?
AElectrical resistance
BConductor temperature
CCoil inductance value
DMagnetic field strength
Answer & Solution
Correct answer: D. Magnetic field strength
1. With the current and the conductor width fixed, the Hall emf is proportional to the field strength.
2. So reading the Hall emf gives a reading of magnetic field strength.
3. Devices built this way are called Hall probes.
4. They can be made very small, which allows fine position mapping of a field.
_Source: OpenStax College Physics (CC BY 4.0), Ch 22 "Magnetism", section 22.6 The Hall Effect_
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