Question

Answer any two) [7x2]
Calculate the free electron concentration, mobility and drift velocity of electrons in aluminium wire of length of 10 m and resistance of 0.06 Ω carrying a current of 15 A, assuming that each aluminium atom contributes 3 free electrons for conduction. ρ=1.7 × 10 –8 Ω–m, atomic weight=26.98, density=1.7× 103 Kg/m3, Avogadro’s Number= 6.025 × 10^23​

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