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Hall effect experiment is made in a sample of a flat semiconductor of length 1 cm and width 0.3 cm. The mobility of carriers in the sample is 4500 cm /V-s. Figure 1: Geometry of fields and sample in Hall effect experiment. Assume the conductor to have charge carrier of charge q (can be either positive or negative The lectures are uploaded as pdf files, so you will need Adobe Acrobat Reader in order to read them. Lecture 2 - Hall effect, a.c. conductivity.Hall effect in semiconductors. Electrons and Holes. We have seen that the charge carriers in metals are electrons which are in partially occupied conduction. Introduction to Drude's free electron theory of metals, electrical conductivity Ohm's law and Hall effect. Introduction to Drude's theory of electrons in a