Question

An electric field \(E\) is established across the ends of a cylindrical conductor of length \(L\) and area of cross-section \(A\). Discuss how electrons attain an average velocity, independent of time. Hence, obtain a relation between current in the conductor and this ‘average velocity’ of electrons.

Hint:

The most important drift velocity formulas are: \[ v_d=\frac{eE\tau}{m} \] and \[ I=neAv_d \] These are frequently used in numericals related to current electricity.

Answer 1