Conduction of Electricity

Question 1

Derive the drift velocity equation

Answer 1

Qtot=Vxexn I=Q/T
Itot=Axlxexn/T
v=d/t or l/t
Itot=Axexnxv or nAve
v=Itot/nAe

Question 2

Define drift velocity

Answer 2

Overall average movement of electrons in the wire per second, over time electrons move slowly across the metal lattice, when there is a p.d across the wire, because they collide constantly.