A 5.00 m length of 1.8 mm diameter wire carries a 700 mA current when 18.0 mV is applied to its ends. Assume the drift velocity is 1.7 × 10-5 m/s.
(a) Determine the resistance R of the wire.
(b) Determine the resistivity?
(c) Determine the magnitude of the current density j.
(d) Determine the magnitude of the electric field inside the wire.
(e) Determine the number n of free electrons per unit volume.