Hall Effect in an alternating current circuit

In summary, the Hall Effect allows for the detection of currents in both DC and AC circuits. The Hall EMF in an AC circuit follows an alternating pattern, changing direction as the current changes direction. This is due to the Lorentz Force. Resources for studying this phenomenon can be found in journal papers, although searching may yield results about Hall Effect Sensors and similar devices instead of the Hall Effect itself.
  • #1
Tahmeed
81
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Since the classical Hall EMF is proportional to current, in an alternating current circuit, the Hall Emf should also follow an alternating pattern. Is it so? Or the Hall Emf doesn't change in a sine wave pattern instead remains more or less same and has a voltage based on the average/rms current?

Also, if the Hall emf changes according to a wave pattern, then is it in the same phase as the current or there is a phase shift?

I am looking for resources to study this, such as journal papers. However, searching isn't helping me much since I am getting results about Hall Effect Sensor and similar devices more.
 
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  • #2
The Hall Effect allows you to sense currents from DC up to the frequency limits of your AC measurement device and circuit. As you can see in the diagram at the Wikipedia page, the Lorentz Force will reverse lateral direction as the current through the Hall device changes direction:

https://en.wikipedia.org/wiki/Hall_effect
 

1. What is the Hall Effect?

The Hall Effect is a physical phenomenon in which a magnetic field perpendicular to an electric current will cause a measurable voltage difference across the conductor.

2. How does the Hall Effect work in an alternating current circuit?

In an alternating current circuit, the magnetic field created by the current will constantly change direction, causing the voltage difference across the conductor to also change direction. This results in an alternating current Hall Effect.

3. What is the significance of the Hall Effect in an alternating current circuit?

The Hall Effect in an alternating current circuit can be used to measure the strength and direction of the magnetic field, as well as the current flowing through the circuit. It is also a crucial component in many electronic devices, such as magnetic sensors and current transformers.

4. How is the Hall Effect measured in an alternating current circuit?

The Hall Effect is typically measured using a Hall probe, which is a small semiconductor device with a known voltage sensitivity. As the probe is placed in the magnetic field of the alternating current circuit, it will produce a voltage output proportional to the strength of the field.

5. What are some real-life applications of the Hall Effect in alternating current circuits?

The Hall Effect is used in various industries, including automotive, aerospace, and electronics, to measure current, detect magnetic fields, and control motors. It is also utilized in medical devices, such as MRI machines, to produce images of the body's internal structures.

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