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5) The resistivity of a certain material is 0.02 22.m whilst the Hall coefficient is
5x10-4m³/C. Assuming an electric field of 1 V/m, deduce the (i) conductivity (ii) The
electron concentration (iii) the intercollision time (iv) the mobility and (v) the drift velocity.

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Problem 3: A 1.2 g wire has a density of 2.7 g/cm3 and a resistivity of 2.7 × 10−8 Ωm. The wire has a resistance of 15 Ω. a) How long is the wire? b) The wire is made up of atoms with valence 1 and molar mass 26.98 g/mol. What is the drift speed of the electrons when there is a voltage drop of 30 V across the wire?
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