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+//Finding resistivity
+//Example 15.12(pg 399)
+clc
+clear
+rho=0.67*(10^-6)//resistivity in ohm-inch
+m=39.4//1meter = 39.4inch
+m2=1525//1 meter2=1525 square inch
+rhoc=rho*m/m2//resistivity of copper in ohm/m^3
+rho1=rhoc/(10^-6)
+printf('Thus resistivity of copper is %e ohm/m^3',rhoc)
+printf('/n which is equal to %2.4f micro-ohm/m^3',rho1)