engineering

Electrical and thermal conductivity of Ag

The electron drift mobility in silver has been measured to be 56 cm2 V-1 s-1 at 27 °C. The atomic mass

and density of Ag are given as 107.87 amu or g mol–1 and 10.50 g cm-3, respectively.

a. Assuming that each Ag atom contributes one conduction electron, calculate the resistivity of Ag at 27

°C. Compare this value with the measured value of 1.6 × 10-8 Ω m at the same temperature and

suggest reasons for the difference.