A) zero
B) \[1.6\times {{10}^{-19}}\]
C) \[1.1\times {{10}^{-19}}\]
D) \[1.76\times {{10}^{-19}}\]
Correct Answer: C
Solution :
Semiconductors are similar to insulators but the conduction and valence bands are spaced closely, so that at room temperature a number of electrons are found in conduction band. For germanium, forbidden energy gap = 0.67 eV \[=0.67\times 1.6\times {{10}^{-19}}J\] \[=1.072\times {{10}^{-19}}J\approx 1.1\times {{10}^{-19}}J\]
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