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+
+                      // Example  2.12
+
+Reff= 100/10;             // Effective R 
+
+         //  P=v^2/R    i.e Power of coil
+v=100;
+R=600;
+R1=v^2/R;
+                          // 2 Coil are connected parallel
+R2=(R1*10)/(R1-10);       // Using parallel R formula
+
+disp(' Resistance of each coil = '+string(R2)+' Ohm');
+
+
+
+        //    p 27     2.12
+
+