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+//Chapter 5, Example 5.4
+
+clc
+//Initialisation'
+n=400                           //no of turns
+l=200*10**-3                    //mean circumference
+pi=3.14                         //pi
+uo=4*pi*10**-7                   //dielectric constant
+a=30*10**-6                     //area
+
+//Calculation
+L=(uo*a*n**2)/l                   //inductance
+
+//Results
+printf("Inductance L = %d uH",L*10**6)