(a) the fermi energy in silicon is 0.30 ev below the conduction band energy ec at t 300 k. plot the probability of a state being occupied by an electron in the conduction band over the range ec e ec 2kt. (b) the fermi energy in silicon is 0.25 ev above the valence band energy ev. plot the probability of a state being empty by an electron in the valence band over the range ev 2kt ev e ev.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k