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+//Example 8_9 page no:319
+clc;
+R=50;
+Xl=25;
+V=200;
+f=50;
+Imax=V/Xl;
+Imin=V/(sqrt(R^2+Xl^2));
+Pmax=V^2/(2*Xl);
+disp(Imax,"the maximum value of current is (in A)");
+disp(Imin,"the minimum value of current is (in A)");
+disp(Pmax,"the maximum power is (in watts)");
+//In text book calculation in Imin is wrong