\(n_e > n_1\) તેથી \(N -\) પ્રકારનું અર્ધવાહક
\(n_1^2\,\, = \,\,{n_e}{n_h}\,\,\,\,\,\therefore \,\,{n_h}\,\, = \,\,\frac{{n_1^2}}{{{n_e}}}\,\, = \,\,\frac{{36\,\, \times \,\,{{10}^{16}}}}{{9\,\, \times \,\,{{10}^{12}}}}\,\, = \,\,4\,\, \times \,\,{10^4}\,/{m^3}\)