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diff --git a/2129/CH1/EX1.23.13/ex1_23_13.sce b/2129/CH1/EX1.23.13/ex1_23_13.sce
new file mode 100755
index 000000000..51189970b
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+++ b/2129/CH1/EX1.23.13/ex1_23_13.sce
@@ -0,0 +1,17 @@
+//exa 1.23.13
+clc;
+clear;
+close;
+//Given data
+Mu_n = 700;//in cm^2/v-s
+n_o = 10^17;// in /cm^3
+q = 1.6 * 10^-19;// in C
+l = 0.1;// in cm
+A = 10^-6;
+V = 10;// in V
+Sigma = q * Mu_n * n_o;// in (ohm cm)^-1
+Rho = 1/Sigma;//in ohm cm 
+R = Rho * (l/A);// in ohm
+I = V/R;// in A
+disp(I*10^3,"The current in mA is");
+