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+
+//To Calculate the Value of Horizontal Component of Earth's Magnetic Field
+
+//Example 36.7
+
+clear;
+
+clc;
+
+n=66;//Number of turns in Tangent Galvanometer
+
+i=0.1;//Current passing through Galvanometer in Amperes
+
+d=22*10^-2;//Diameter of coil in metres
+
+theta=%pi/4;//Defelction in Galvanometer in radians
+
+u0=4*%pi*10^-7;//permeability of vaccum
+
+Bh=(u0*n*i)/(d*tan(theta));//Horizontal component of Earths Magnetic Field
+
+printf("Horizontal component of Earth Magnetic Field = %.1f*10^-5 T",Bh*10^5);