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+//CHAPTER 1- D.C. CIRCUIT ANALYSIS AND NETWORK THEOREMS 
+//Example 28
+
+disp("CHAPTER 1");
+disp("EXAMPLE 28");
+
+//VARIABLE INITIALIZATION
+I1=5;                          //current source in Amperes
+va=100;                        //voltage source in Volts
+r1=20;                         //in Ohms
+r2=10;                         //in Ohms
+r3=20;                         //in Ohms
+
+//SOLUTION
+In=I1-(va/r1);                 //since a and b are shorted hence va=vb
+rn=r1+((r3*0)/(r3+0));
+I=(rn*In)/(rn+r2);
+disp(sprintf("By Norton Theorem, the value of I is %d A",I));
+
+//END