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diff --git a/3636/CH5/EX5.11/Ex5_11.sce b/3636/CH5/EX5.11/Ex5_11.sce
new file mode 100644
index 000000000..e89c74e33
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+++ b/3636/CH5/EX5.11/Ex5_11.sce
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+clc;
+clear;
+Na=4.22*10^14 //doping densities in cm^-3
+Nd=4.22*10^16 //in cm^3
+e=1.6*10^-19 //in eV
+Vbi=0.65 //breakdown voltage in V
+ni=1.5*10^10 //in cm^-3
+epsilon_si=11.7 //in F/cm
+epsilon_0=8.85*10^-14 //in F/cm
+V=10 //applied voltage in V
+Const=0.0259 //value for kT/e in V
+
+//Calculation
+Nd=sqrt((exp(Vbi/Const)*ni^2)/100)
+Na=100*Nd
+W=(((2*epsilon_0*epsilon_si*(Vbi+V))*(Na+Nd))/(e*Na*Nd))^0.5
+Cj=(epsilon_0*epsilon_si)/W
+
+mprintf("Depletion capacitance per unit area= %1.3e F/cm^2\n",Cj) //The answers vary due to round off error
+mprintf("Width of depletion region= %1.2e cm",W) //The answers vary due to round off error