Answer Happy

5: A 200 m long aluminum wire having a uniform cross sectional aren A and resistivity 2.8x100m is connected across a voltage AV -13 V The number of free electrons per unit volume is 6.02x10 electron/n'. The drift speed , (in mm's) of electrons is: a) 0.15 b) 0.24 c) 0.28 d) 0.33 c) 0.41