Question

Examples1 1. We want to determine the number of free electrons per unit volume that participate in conduction in a monovalent metal at room temperature. There are 2 approaches. One approach is theoretical approach (A) and the other one is the experimental approach (B) A Calculate the number of free conduction electrons in a unit volume of an FCC metal with lattice parameter 3.6 X 10 10 m at room temperature. B) A Hall experiment is carried out and the following results are obtained Vy 106 v Jx- 3.5 x 106 A/m2 . i) Calculate the Hall Voltage i) Determine the density of carriers (free electrons that participate in the conduction) ) Calculate the Hall mobility .iv) Calculate resistivity C) How does the theoretical estimate of number of conduction electrons compare with the experiment? 1 cm 0.5 em

Answer 1

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ne 0.0109 k(031 n: 10-9 x 1028 ne n c ne Hne 0.29 S Scanned with CamScanner

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