A currrent of 5A is passing through a metallic wire of cross sectional area `14xx 10^(-6) m^2` . If the density of the charge carries in the wire is `5 xx 10^(26)//m^3`, find the drift speed of the electrons (charge carries).

Explanation

`I= 5 A , A = 14xx10^(-6) m^2`
density of electron `=5 xx 10^(26)//m^3`
charge of electron `e= 1.6xx10^(-19) C`.
drift speed `v_d= i/("neA")`
`=(5)/(5xx10^(26) xx 1.6 xx 10^(-19( xx 14 xx 10^(-6))`
`=(10^(-1))/(1.6xx 14) = 4.46xx10^(-3) ` m/s