An iron wire has a cross-sectional area equal to 9.50 10-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 8.0 A.
(a) How many kilograms are there in 1.00 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 per cubic meter).
mol/m3
(c) Calculate the number density of iron atoms using Avogadro's number.
atoms/m3
(d) Obtain the number density of conduction electrons given that there are two conduction electrons per iron atom. electrons/m3
(e) Calculate the drift speed of conduction electrons in this wire.
m/s