1 files changed, 20 insertions, 0 deletions
diff --git a/3754/CH10/EX10.12/10_12.sce b/3754/CH10/EX10.12/10_12.sce
new file mode 100644
index 000000000..52ef0e5f1
--- /dev/null
+++ b/3754/CH10/EX10.12/10_12.sce
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+clear//
+
+//Variables
+
+d = 0.001                      //diameter (in meter)
+ND = 10**20                    //Number of phosphorus ions (in per cubic-meter)
+R = 1000                       //Resistance (in ohm)
+un = 0.1                       //mobility (in meter-square per volt-second)
+q = 1.6 * 10**-19              //charge on electron (in Coulomb)
+
+//Calculation
+
+n = ND                         //Number of free electron (in per cubic-meter)
+sig = q*n*un                   //conductivity (in Siemen per meter)
+A = %pi * d**2 / 4         //Area of cross section (in meter-square)
+l = R * sig * A                //length (in meter) 
+
+//Result
+
+printf("\n Length of the silicon would be  %0.3f  mm.",l*1000)