Hall effect experiment, Electrical Engineering

Assignment Help:

Hall Effect experiment:

Prob. Write short note on Hall Effect and its applications. What properties of a semiconductor are determined from a Hall Effect experiment?

Sol. semiconductor material carrying current I is placed under a transverse magnetic field B, then an electric field E is developed in the direction perpendicular to both I and B. this phenomenon is called as Hall Effect and is shown in Fig. Assuming that current knows from left to right in x direction and the semiconductor bar is kept under influence of magnetic field B acting in z direction, then bar will experience an electromagnetic force acting in downward direction. In the above fig. if the semiconductor bar is of p type then charge carriers are holes and current I flowing in the bar will be due to movement of holes from left to right. Since the electromagnetic force is acting downward, charge carries are pressed downwards and more holes accumulate near side I. Thus side I become more positively charged with respect to side 2. Therefore a potential difference is developed between side 1 and side. This voltage is called as hall voltage and is denoted as VH. If the semiconductor bar is n type, then current will flow in the given direction because of movement of electrons in opposite direction. Due to force, these charge carriers will accumulate downward near side 1 making it negatively charge with respect to side.


Related Discussions:- Hall effect experiment

Discuss the term d/a conversion, Discuss the term D/A conversion. D/A...

Discuss the term D/A conversion. D/A conversion: Digital-to-analog or analog-to-digital conversions are two very significant aspects of digital data processing.  Digital-to-

What are encoder and the decoder, There are zillions of things in electroni...

There are zillions of things in electronics known as encoders. You can look up LCDs and NAND gates as well and this is actual basics.

#mixed storage oscilloscope, ..Explain mixedd storage oscilloscope with ne...

..Explain mixedd storage oscilloscope with neat diagram,

Conditional call instruction, Conditional Call Instruction Similar  to ...

Conditional Call Instruction Similar  to conditional  jump  instructions there are conditional call  instructions  also based on various  flags.

What do you understand by bezier surface, What do you understand by Bezier ...

What do you understand by Bezier surface ? Discuss Determine the equivalent bicubic formulation of a closed and open cubic B-spine surface. a) What do you understand by solid

Determine a normalized frequency at 820nm, Determine a normalized frequency...

Determine a normalized frequency at 820nm for a step index fibre having 25µm core radius. Given n 1 =1.48 and n 2 =1.46.Also calculate how several modes propagate within this fibre

Design a calculator with multi functions, Aims More practice using d...

Aims More practice using data movement and control flow statements. Understand techniques to interface microprocessors with external switch-based hardware. Write P

Feedback amplifier, #I want to get lecture notes on Electronic device.and c...

#I want to get lecture notes on Electronic device.and circuits .

Determine the apparent power and the reactive power, Q. A balanced electric...

Q. A balanced electrical industrial plant load of 9.8 MW with 0.8 lagging power factor is supplied by a three-phase 60-Hz system having a maximum rating (load-carrying capacity) of

Ac motors, AC Motors DC motors that have their magnetic fields produce...

AC Motors DC motors that have their magnetic fields produced by coils as described earlier can, in principle,  be powered from AC as well, since if the applied voltage reverse

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd