A semiconductor has phosphorus as impurity, then it will have
A semiconductor has phosphorus as impurity, then it will have
A. `n_e=n_h`
B. `n_e gt gt n_h`
C. `n_e lt lt n_h`
D. `n_e=1/2 n_h`
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Correct Answer - B
When phosphorus (pentavalent impurity) is added to the semiconductor, it becomes an n-type semiconductor, where electrons are the majority charge carriers. Hence `n_e gt gt n_h`
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