AP EAMCET · PHYSICS · Semiconductors
If \(\mathrm{n}_{\mathrm{e}}\) and \(\mathrm{n}_{\mathrm{h}}\) are concentrations of electrons and holes in a semi-conductor, then the intrinsic carrier concentration \(\left(\mathrm{n}_1\right)\) in thermal equilibrium is
- A \(n_1=\sqrt{\frac{n_e}{n_h}}\)
- B \(n_1=\frac{n_h}{n_e}\)
- C \(n_1=\sqrt{n_e n_h}\)
- D \(n_1=n_e+n_h\)
Answer & Solution
Correct Answer
(C) \(n_1=\sqrt{n_e n_h}\)
Step-by-step Solution
Detailed explanation
At thermal equilibrium, \(n_i^2=n_e n_h \Rightarrow n_i=\sqrt{n_e n_h}\)
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