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
Singular Value Decomposition (i) initialize a 2x2 matrix m=[4 0.5;0.5 7]  Factorize the matrix with SVD [u d v]=svd(m) How the matrix u and v differ? Why is that?

Management Process of Balanced Score Card The BSC (Balanced Score Card) proposes four a new management processes which separately and in combination, contributes to linking lo

Question: a) What is the main difference between a latch and a flip flop? b) Draw the logic diagram of an SR-latch using only NAND gates. c) A positive edge triggered

Q. Explain AC voltage controllers? Common applications for these controllers are found in fan, pump, and crane drives. Figure shows three-phase symmetrical ac voltage-controlle

Load Balancing and Load Management It has been observed in which the load on all three phases of a distribution line and between the feeders is not balanced. This output in in


A three-phase, six-pole, wye-connected synchronous generator is rated at 550 V and has a synchronous reactance Xs = 2 . When the generator supplies 50 kVA at rated voltage and a p

Question: Figure shows the basic circuit of the BJT Common Emitter Amplifier. (a) What is the function of RB, RC, Ci, Co and CE ? (b) (i) Sketch the d.c. equivalent circu

Consider a simple zener voltage regulator with the circuit diagram shown in Figure (a). (a) For a small reverse resistance R Z S and V S - R S i out > V Z , show that v ou

Second Quadrant or Class B Chopper Class B  chopper  is shown in figure in this  type of  chopper load  must contain  a dc source E ( may  be battery or a DC motor)  and induct