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diff --git a/2534/CH1/EX1.16/Ex1_16.sce b/2534/CH1/EX1.16/Ex1_16.sce
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+//Ex1.16
+clc
+ni = 2.5*(10^13) //intrinsic concentration
+donor = 10^-7 //donor atoms
+ND = 4.41*(10^22)*(10^-7) //donor atom concentration
+e = 1.6*(10^-19) //electron charge
+micro_n = 3800; micro_p = 1800 //charge mobility
+disp("ni ="+string(ni)+" /cm.cube")
+disp("donor = "+string(donor))
+disp("n = ND ="+string(ND)+" /cm.cube")
+disp("p = (ni^2)/ND = "+string((ni^2)/ND)+" /cm.cube") //hole concentration
+disp("micro_n = 3800 cm.sq/V-s; micro_p = 1800 cm.sq/V-s")
+sigma = ni*e*(micro_n+micro_p) //conductivity
+disp("sigma = ni*e(micro_n + micro_p) = "+string(sigma)+"mho/cm")