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Estimate the average drift speed of conduction electrons in copper wire of cross sectional area 10-7 m2 carrying a current of 1.5 A. Assume the density of conduction electrons to be 9 x 1028 m-3 and charge on electron to be 1.6 x 10-19 C. |
10-3 m s-1 10-5 m s-1 10-4 m s-1 4.6 x 10-3 m s-1 |
10-3 m s-1 |
I = neAvd vd = I/neA = 10-3 m s-1 |
