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+// Ex 2 Page 340
+
+clc;clear;close;
+// Given
+t1=2; // mm 
+t2=5; // mm 
+t3=7; // mm 
+eps1=3;// dielectric constant
+eps2=4;// dielectric constant
+eps3=6; // dielectric constant
+eps0=1/36/%pi*10^-9; // dielectric constant
+d=10/100 ;// m
+V=1500 // V 
+//E1*t1+E2*t2+E3*t3=V
+//Voltage Gradients : 
+// using eps1*E1=eps2*E2=eps3*E3
+E1=V/(t1+(eps1/eps2)*t2+(eps1/eps3)*t3)// V/mm 
+E1=E1*10 // V/cm
+E2=eps1*E1/eps2 // V/cm
+E3=eps1*E1/eps3 // V/cm
+printf("Voltage Gradients :\n   for A : %.f V/cm\n   for B : %.f V/cm\n   for C : %.f V/cm",E1,E2,E3)
+
+A = %pi*d^2
+W1=1/2*eps0*eps1*E1^2*10^4*A*t1*10^-3; // J
+W2=1/2*eps0*eps2*E2^2*10^4*A*t2*10^-3; // J
+W3=1/2*eps0*eps3*E3^2*10^4*A*t3*10^-3; // J
+W1=W1*10^6 ; // uJ
+W2=W2*10^6 ; // uJ
+W3=W3*10^6 ; // uJ
+printf("\nEnergy stored :\n   for A : %.1f uJ\n   for B : %.1f uJ\n   for C : %.1f uJ",W1,W2,W3)
+
+
+// Answer in the textbook are not accurate