Example 29 a Estimate the average drift speed of conduction

Last updated: 6/5/2023

Example 29 a Estimate the average drift speed of conduction electrons in a copper wire of cross sectional area 1 0x107m carrying a current of 1 5 A Assume that each copper atom contributes roughly one conduction electron The density of copper is 9 0 10 kg m and its atomic mass is 63 5 u Take Avogadro s number 6 0 10 3 mol 3 b Compare the drift speed obtained above with i thermal speeds of copper atoms at ordinary temperatures ii speeds of electrons carrying the current and iii speed of propagation of electric field along the conductor which causes the drift motion NCERT