Question
Download Solution PDFThe principle of Hall effect is used in the construction of which one of the following?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGaussmeter works based on the principle of the Hall Effect.
Ammeter and voltmeter work based on electrostatic effect.
Important Points
Other Applications of the Hall effect are following-
1. In Determining the Type of Semiconductor-
- By knowing the direction of the Hall Voltage, we can determine that the given sample is whether n-type or p-type semiconductor.
- This is because the Hall coefficient is negative for n-type semiconductors while the same is positive in the case of p-type semiconductors.
2. In Calculation the Carrier Concentration-
- The expressions for the carrier concentrations of electrons (n) and holes (p) in terms of Hall coefficient are given by
- \(n = \frac{1}{{q{R_H}}}\) and \(p = \frac{1}{{q{R_H}}}\)
3. In determining the Mobility (Hall Mobility)-
- Mobility expression for the electrons (μn) and the holes (μp), expressed in terms of Hall coefficient is given by,
- μn = σnRH and μp = σpRH
- Where, σn and σp represent the conductivity due to the electrons and the holes, respectively.
4. In Measurement of Magnetic Flux Density
- This equation can be readily deduced from the equation of Hall voltage and is given by
- \(B = \frac{{{V_H}d}}{{{R_H}I}}\)
5. There are many commercially available types of equipment based on the principle of Hall-effect including Hall-effect sensors and Hall-effect probes.
Hall effect sensors are used to detect variables such as the proximity, speed, or displacement of a mechanical system.
Last updated on Jun 4, 2025
-> BPSC AE 2025 exam date has been revised. The exam will be conducted on July 5, 6 & 7 now.
-> Candidates who were facing technical issues while filling form can now fill the BPSC AE application form 2025 without any issue.
->BPSC AE age limit 2025 has been revised.
->BPSC AE application form 2025 was released on April 30. The last date to fill BPSC AE form 2025 was May 28.
->BPSC AE interview call letters released for Advt. 32/2024.
->BPSC AE notification 2025 has been released.
->A total of 1024 vacancies are announced through BPSC AE recruitment 2025
->The BPSC Exam Calendar 2025 has been released for the Assistant Engineer Recruitment.
-> The selection will be based on a written exam and evaluation of work experience.
-> Candidates with a graduation in the concerned engineering stream are eligible for this post.
-> To prepare for the exam solve BPSC AE Previous Year Papers. Also, attempt the BPSC AE Civil Mock Tests.