A copper wire has radius r = 0.0245 cm, is 3.05 m long, has resistivity ρ = 1.72 · 10−8 Ω m, and carries a current of 0.360 A. The wire has density of charge carriers of 8.50 · 10^28 electrons/m^3. (When entering units, use ohm for Ω.)
(a) What is the resistance, R, of the wire?
(b) What is the electric potential difference, ΔV, across the wire?
(c) What is the electric field, E, in the wire? (Enter the magnitude of the electric field.)