A current of 2 A is passing through a metal wire of cross sectional area `2 xx 10^(-6) m^(-2)` . If the number density of free electrons in the wire is `5 xx 10^(26) m^(-3)` , the drift speed of electrons is (given `e = 1.6 xx 10^(-19) C)`

Options

A. `1/16 ms^(-1)`
B. `1/40 ms^(-1)`
C. `1/80 ms^(-1)`
D. `1/32 ms^(-1)`

Answer

C