a
શુદ્ધ સેમીકન્ડક્ટરમાં ઈલેક્ટ્રોન હોલ જાડકાં \(= 7 × 10^{15 } / m^3,  n_{total intial } =  n_h + n_e = 14× 10^{15}\) 

દાતાર અશુદ્ધિ \({{\text{N}}_{\text{D}}}\, = \,\,\frac{{5\,\, \times \,\,{{10}^{28}}}}{{{{10}^7}}}\,\, = \,\,5\,\, \times \,\,{10^{21}}\,\,\) અને \({n_{e\,}} = \,\,\frac{{{N_D}}}{2}\, = \,\,2.5\,\, \times \,\,{10^{21}}\)

તેથી, \(n_{final} = n_h + n_e    ⇒ n_{final} \approx  n_e \approx   2.5×10^{21} ( ∵ n_e >> n_h)\)

ઘટક \( = \,\,\frac{{{{\text{n}}_{{\text{final}}}}\,\, - \,\,{n_{initial}}}}{{{n_{initial}}}}\, = \,\,\frac{{2.5\,\, \times \,\,{{10}^{21}}\,\, - \,\,14\, \times \,\,{{10}^{15}}}}{{14\,\, \times \,\,{{10}^{15}}}}\,\, \approx \,\,\frac{{2.5\,\, \times \,\,{{10}^{21}}}}{{14\,\, \times \,\,{{10}^{15}}}}\,\, = \,\,1.8\, \times \,\,{10^5}\)