Question

e have ong conduction electron per atom. Its resistivity is po 5.25 x 10-*m at 2C mass is 183.84 gr/mole. Also, its density is 19.3 gr'em and molar Tungsten's resistivity as a function of Celsius temperature T is given by pT)-pol+0.004 x (T-20 C)] all SI base units Assume a light bulb has a small tungsten filament and when powered on, it attains a temperature of 2120 C. a) Determine the conduction electron collisionfrequences at the temperatures of 2120°C; b) Show (by differentiation) the following time rate of change relationship (utilizing all SI base units): dT 2222, d d A d

Answer 1