The drift velocity of electrons for a conductor connected in an electrical circuit is V d . The conductor is now replaced by another conductor with same material and same length but double the area of cross-section. The applied voltage remains same. The new drift velocity of electrons will be

Step-by-step solution

Drift velocity of electrons through a conductor kept in an external electric field is given by V d = - e E m τ = - e V m l τ Where, e = magnitude of charge on electron, m = mass of electron, E = external electric field and τ = average relaxation time. As, drift velocity is independent of area. So, the new drift velocity of electrons will be V d .