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+// Display mode
+mode(0);
+// Display warning for floating point exception
+ieee(1);
+clear;
+clc;
+disp("Introduction to heat transfer by S.K.Som, Chapter 2, Example 11")
+//An electrical resistance wire 2.5mm or 2.5*10^-3m in diameter(D) and L=0.5m long has a measured voltage drop of E=25V for a current flow of I=40A.
+D=2.5*10^-3;
+I=40;
+E=25;
+L=0.5;
+ro=D/2;//ro is radius of wire
+//The thermal conductivity(k) of wire material is 24W/(m*K) 
+k=24;
+//The rate of generation of thermal energy per unit volume is given by qG=(E*I)/(L*%pi*D^2/4)
+disp("The rate of heat generation of thermal energy in W/m^3 is")
+qG=(E*I)/(L*%pi*D^2/4)
+//The temprature at the centre is given by To=Tw+((qG*ro^2)/(4*k)) where Tw=650K is surface temprature 
+Tw=650;
+disp("The temprature of wire at the centre in K is ")
+To=Tw+((qG*ro^2)/(4*k))//Note:The answer in the book is incorrect(value of D has been put instead of ro)
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