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diff --git a/2780/CH12/EX12.6/Ex12_6.sce b/2780/CH12/EX12.6/Ex12_6.sce
new file mode 100755
index 000000000..ce0443396
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+++ b/2780/CH12/EX12.6/Ex12_6.sce
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+clc
+//to calculate charge
+//let charge be q coulomb ,then the surface density of charge i.e. sigma=q/(4*%pi*r^2)..............eq(1)
+//outward pull per unit area =sigma^2/(2*epsilon0)............eq(2)
+//put eq(1) in eq(2),we get q^2/(4*%pi*r^2)^2*(2*epsilon0)..............eq(3)
+//pressure due to surface tension =4*T/r............eq(4)
+T=27
+r=1.5*10^-2
+epsilon0=8.85*10^-12
+//equate eq(3) and eq(4),we get
+q=sqrt(4*T*((4*%pi*r^2)^2)*2*epsilon0/r)
+disp("charge is q="+string(q)+"coulomb")
+//answer is given wrong in the book,square of 4*%pi*r^2 is not taken in the solution.