Calculate the average drift speed of conduction electrons in a copper wire of cross-sectional area `1.0xx10^(-7)m^(2)`, carrying a current of 1.5 A. Assume that each copper atom contributes roughly one conduction electron. The density of copper is `9.0xx10^(3) kg m^(-3)` and its atomic mass is 63.5. Take Avogadro's number `=6.0xx10^(23)`.

Answer

`(1.5xx63.5xx10^(-3))/(1.6xx6xx9)=1.1xx10^(-3)ms^(-1)`
or `1.1 mm s^(-1)`