Surprisingly Julian leaves the bathroom and explains the situation to June in the room in the beginning of a tense and dramatic night. Terry explains to Julian that he brought a revolver to shoot her lover and is waiting for him in room 508, but his friend asks him to be calm that he will meet Terry in the hotel. Terry has followed her to the decadent Riverview Hotel, where she checked in to meet her lover in room 507. Where R H is called the Hall coefficient.The unbalanced Terry (Danny Pino) calls his best friend Julian (Mike Vogel) that is having a bath telling that his beloved fiancée June (Brittany Murphy) is cheating him. Using (1) and (2) the Hall voltage V H can be written as, Where 'n' is the number density of electrons in the conductor of length l ,breadth 'w' and thickness 't'. Where 'e' the electric charge, 'E' the hall electric field developed, 'B' the applied magnetic field and 'v' is the drift velocity of charge carriers. In steady state condition, the magnetic force is balanced by the electric force. The vertical electric field can be measured as a transverse voltage difference using a voltmeter. This charge imbalance produces an electric field which counteracts with the magnetic force and a steady state is established.
Since the charges cannot escape from the material, a vertical charge imbalance builds up. In both cases, under the application of magnetic field the magnetic Lorentz force, causes the carriers to curve upwards.
We know that a current flows in response to an applied electric field with its direction as conventional and it is either due to the flow of holes in the direction of current or the movement of electrons backward.
When the applied magnetic field B=0,the voltage difference will be zero. This develop a potential difference along y-axis is known as Hall voltage V Hand this effect is called Hall Effect.Ī current is made to flow through the sample material and the voltage difference between its top and bottom is measured using a volt-meter. This set up a transverse electric field E y in the sample. This results in accumulation of charge carriers at the top edge of the sample. If the magnetic field is applied along negative z-axis, the Lorentz force moves the charge carriers (say electrons) toward the y-direction. There for current density is given byįig.1 Schematic representation of Hall Effect in a conductor.ĬCG – Constant Current Generator, J X – current density If w is the width of the sample and t is the thickness.
#ACROSS THE HALL GENERATOR#
An electric field is applied in X-direction using Constant Current Generator (CCG), so that current I flow through the sample. It directly determines both the sign and density of charge carriers in a given sample.Ĭonsider a rectangular conductor of thickness t kept in XY plane. In solid state physics, Hall effect is an important tool to characterize the materials especially semiconductors. If a current carrying conductor placed in a perpendicular magnetic field, a potential difference will generate in the conductor which is perpendicular to both magnetic field and current. Two solenoids, Constant current supply, Four probe, Digital gauss meter, Hall effect apparatus (which consist of Constant Current Generator (CCG), digital milli voltmeter and Hall probe). To calculate the Hall coefficient and the carrier concentration of the sample material.To determine the Hall voltage developed across the sample material.
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