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+//Chapter 21, Problem 25

+clc;

+V=24;                       //ac source

+R1=15e3;                    //input resistance 

+N=25/1;                     //turns ratio

+Rin=15e3;                   //internal resistance

+Rl=R1*(1/N)^2;              //load resistance

+Rt=Rin+R1;                  //total input resistance

+I1=V/Rt;                    //primary current

+I2=I1*N;                    //secondary current

+P=I2^2*Rl;                  //power dissipated

+printf("(a) Load resistance = %d ohms\n\n",Rl);

+printf("(b) Power dissipated in the load = %.1f mW",P*1000);