An aluminium wire with a cross-sectional areaof 6.4 × 10^?6 m^2 carries a current of 9.1 A.Find the drift speed of the electrons in thewireThe density of aluminium is 2.7 g/cm3.(Assume that two electrons is supplied byeach atom).Answer in units of m/s.
Molar mass of Aluminum M 0.02698 kg / mol Density of Aluminum p 2700 kg / m^3 Na 6.0210^23 atoms / mole The number density of free electrons in this wire n[pNa / M]2 1.210^29 / m^3 q1.60210^-19 C vd I/(nqA) 7.410^-5 m/s
