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+//calculating resistance, reactance and impedance of choke coil

+I=7.5//current flowing through the circuit

+V1=110//voltage across non-inductive resistor

+R=V1/I

+V2=180//voltage across choke coil

+Z=V2/I

+Zt=230/I//impedance of whole circuit

+r=(Zt^2-R^2-Z^2)/(2*R)

+Xl=sqrt(Z^2-r^2)

+mprintf("Reactance of coil=%f ohm\nResistance of coil=%f ohm\nImpedance of coil=%f ohm\n",Xl,r,Z)

+//calculating total resistance and impedance of the circuit

+Rt=r+R

+Zt=sqrt(Rt^2+Xl^2)

+mprintf("Total resistance of circuit=%f ohm\nTotal impedance of circuit=%f ohm\n",Rt,Zt)

+//calculating power absorbed by the coil

+P1=I^2*r

+mprintf("Power absorbed by the coil=%f W\n",P1)

+//calculating power drawn by circuit

+P2=I^2*(r+R)

+mprintf("Power drawn by the circuit=%f W\n",P2)

+//calculating power factor of whole circuit

+pf=Rt/Zt

+mprintf("Power factor of the whole circuit=%f lagging",pf)

+//answers vary from the textbook due to round off error