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+//CHAPTER 2- STEADY-STATE ANALYSIS OF SINGLE-PHASE A.C. CIRCUIT
+//Example 14
+
+disp("CHAPTER 2");
+disp("EXAMPLE 14");
+
+//VARIABLE INITIALIZATION
+v=100;                         //amplitude of rms value of voltage in Volts
+I=20;                          //amplitude of rms value of current in Amperes 
+
+//SOLUTION
+
+//solution(i)
+w=314;                         //angular frequency in radian/sec
+f=w/(2*%pi);                   //as w=2*(%pi)*f
+f=ceil(f);            
+disp(sprintf("(i) The frequency is %d Hz",f));
+
+//solution (ii)
+E=v/sqrt(2);
+angle_E=-45;                   //in degrees
+I=I/sqrt(2);                   
+angle_I=-90;                   //in degrees
+z=E/I;
+angle=angle_E-angle_I;
+disp(sprintf("(ii) The impedance is %d Ω, %d degrees",z,angle));
+
+function [x,y]=pol2rect(mag,angle1);
+x=mag*cos(angle1*(%pi/180));   //to convert the angle from degrees to radian
+y=mag*sin(angle1*(%pi/180));
+endfunction;
+[r,x]=pol2rect(z,angle);
+L=x/(2*%pi*f);
+disp(sprintf(" The inductance is %f H",L));
+
+//END
+
+