Hall effect experiment, Electrical Engineering

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.

Posted Date: 2/8/2013 2:50:45 AM | Location : United States







Related Discussions:- Hall effect experiment, Assignment Help, Ask Question on Hall effect experiment, Get Answer, Expert's Help, Hall effect experiment Discussions

Write discussion on Hall effect experiment
Your posts are moderated
Related Questions
Why are some flashlights brighter than others? Why is it important that all of the batteries point in the same direction? What is the difference between old batteries and new? What

I would send the project file so you can take a look at it.

Mode 2 In this  mode transistor  gets turned off by  the negative output  of PWM  current  flows  through  inductance L diode D then  divide into two  parts one flows through

Q Consider a three-phase, full-wave bridge recti?er, as shown in Figure, with a purely resistive load R. For each diode, determine: (i) efficiency, (ii) form factor, (iii) ripple f

Q. What the major advantages FET transistors over BJT transistors? a. BJT transistor (bipolar junction transistor) is a bipolar device - the prefix bi-revealing that the conduc

Q. In the Wheatstone bridge circuit shown in Figure, R 1 = 16, R 2 = 8, and R 3 = 40; R 4 is the unknown resistance. RM is the galvanometer resistance of 6 . If no current

operation of induction motor

how to write kvl equation in series clipper circuit without any battery

Q. What do you mean by Waveforms? We are often interested in waveforms, which may not be constant in time of particular interest is a periodic waveform, which is a time-varying

1.   Describe the basic features of electricity at a fundamental level ? (to achieve a pass grade, explain the nature of electricity) 2.   What part of a cable are conduc