Physics for Electrical Engineering: Unit III: Semiconductors and Transport Physics
Assignment Problems
Semiconductors and Transport Physics | Physics for Electrical Engineering
Physics for Electrical Engineering: Unit III: Semiconductors and Transport Physics : Assignment Problems
ASSIGNMENT PROBLEMS
1.
In an intrinsic semiconductor, the effective mass of the electron is 0.07 m,
and that of the hole is 0.4 m where is the rest mass of the electron. Calculate
the intrinsic concentration of charge carriers at 300 K. Given Eg =
0.7 eV.
[Ans:
2.3 × 1018/m3]
2.
In a Hall experiment, a current of 25 A is passed through a long foil of silver
which is 0.1 mm thick and 3 cm wide. A magnetic field of flux density 0.14 Wb/m2
is applied perpendicular to the foil. Calculate Hall voltage developed and
estimate the mobility of electrons in silver. Given the conductivity of silver
is 6.8 × 107 Ω-1 m-1 and Hall coefficient is -
8.4 × 10-11 m3/C.
[Ans: 29.4 μV and μe = 57.7 × 10-4
m2 V-1 s-1]
Physics for Electrical Engineering: Unit III: Semiconductors and Transport Physics : Tag: : Semiconductors and Transport Physics | Physics for Electrical Engineering - Assignment Problems
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Physics for Electrical Engineering
PH3202 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation