An iron wire has a cross-sectional area of 5.90 ✕10−6 m2. Carry out steps (a) through (e) tocompute the drift speed of the conduction electrons in thewire.
(a) How many kilograms are there in 1 mole of iron?
_____________ kg/mol
(b) Starting with the density of iron and the result of part (a),compute the molar density of iron (the number of moles of iron percubic meter).
___________mol/m3
(c) Calculate the number density of iron atoms using Avogadro'snumber.
__________ atoms/m3
(d) Obtain the number density of conduction electrons given thatthere are two conduction electrons per iron atom.
___________electrons/m3
(e) If the wire carries a current of 38.0 A, calculate the driftspeed of conduction electrons.
___________ m/s
