EMC Question of the Week: September 30, 2019
A Hall-effect sensor exhibits a voltage at its output when exposed to
- an electric field
- a magnetic field
- a mechanical stress
- infrared light
Answer
The correct answer is "b". The Hall Effect describes the redistribution of current flowing in a conductor in the presence of an applied magnetic field. This redistribution produces a voltage across the conductor in a direction transverse to the current flow. Stronger applied fields produce higher voltages. Common applications of Hall effect sensors include non-contact position sensors and low-frequency current probes.
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