1. The problem statement, all variables and given/known data A metal wire with 1023 free electrons per cubic centimeter is carrying 60 Hz alternating current with a maximum current density of 100 amps/cm2. a) Write an expression for the average electron drift velocity as a function of time (vd as a function of time). b) What is the average drift distance of free electrons in one direction in a half-cycle of current? 2. Relevant equations J = σE = σEsin(ωt) ω = 2πν J = -eNevd 3. The attempt at a solution Part a: J = -eNevd -eNevd = σEsin(ωt) vd = (-σEsin(ωt)) / (eNe) Part b: Need help here, I attempted to plug in ω = 2πν into the equation J = σEsin(ωt), but don't seem to be getting anywhere, because I don't have σ or E.