1. A metal object with length 10 m, resistance is I kN and mobility is 4000 cm/v.s. If the concentration of free electrons equal 8.5x10 m and the carrying current is 2 mA. Find the current density. 2. Find the drift velocity, if the voltage is 4 V, length is 60 cm, area is 2 m, resistance is 5 kl and the number of electrons is 4x10" m". 3. Prove the probability of finding electrons equal zero, if E> Er at 0k temperature.

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O homework 6...
Exercises
1. A metal object with length 10 m, resistance is I kn and mobility is 4000 cm/v.s. If the
concentration of free electrons equal 8.5x10 m and the carrying current is 2 mA. Find
the current density.
2. Find the drift velocity, if the voltage is 4 V, length is 60 cm, area is 2 m, resistance is 5
k2 and the number of electrons is 4x10" m.
3. Prove the probability of finding electrons equal zero, if E > Er at 0k temperature.
4. If E< E, and T-0"k, prove the probability of finding electrons equal 100%.
5. Calculate the temperature when probability is 0.99 and Fermi energy level below energy
level by 0.3 eV.
...
Transcribed Image Text:Y:OA O homework 6... Exercises 1. A metal object with length 10 m, resistance is I kn and mobility is 4000 cm/v.s. If the concentration of free electrons equal 8.5x10 m and the carrying current is 2 mA. Find the current density. 2. Find the drift velocity, if the voltage is 4 V, length is 60 cm, area is 2 m, resistance is 5 k2 and the number of electrons is 4x10" m. 3. Prove the probability of finding electrons equal zero, if E > Er at 0k temperature. 4. If E< E, and T-0"k, prove the probability of finding electrons equal 100%. 5. Calculate the temperature when probability is 0.99 and Fermi energy level below energy level by 0.3 eV. ...
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