//  Electrical quantities classes:  Resistance
//  -----------------------------
                                        package electric;
public class Eresistance {
      double value;

 public Eresistance(double ohms)   {value = ohms;} 
 public Eresistance(Eresistance x) {value = x.value;}
 public Eresistance()              {value = 0;}



 public Eresistance series  (Eresistance rs)
        {return new Eresistance(value + rs.value);}
 public Eresistance parallel(Eresistance rs)
       {return new Eresistance(value * rs.value / (value + rs.value));}
 public Epotential mpy(Ecurrent  rs) {return new Epotential(value * rs.value);}


 public boolean equals     (Eresistance rs) {return value == rs.value;}
 public boolean lessThan   (Eresistance rs) {return value  > rs.value;}
 public boolean greaterThan(Eresistance rs) {return value  < rs.value;}

 public String toString() {return value + " ohms";}
}