using System;

namespace Science.Physics.GeneralPhysics
{
	/// <summary>
	/// Resistance
	/// </summary>
	public class Resistance : Scalar
	{
		public Resistance()
		{
		}
		public Resistance(ElectricPotentialDifference V, ElectricCurrent I)
		{
			this.Magnitude = V.V/I.A;
		}
		public Resistance(Resistivity rho, Length l, Area A)
		{
			this.Magnitude = rho.Ohmm/A.mSQUARE*l.m;
		}
		public double Ohm
		{
			get{return this.Magnitude;}
			set{this.Magnitude=value;}
		}
		public static Resistance Parallel(Resistance R1, Resistance R2)
		{
            Resistance res = new Resistance();
			res.Ohm = R1.Ohm*R2.Ohm/(R1.Ohm+R2.Ohm);
            return res;
		}
		public static Resistance Series(Resistance R1, Resistance R2)
		{
            Resistance res = new Resistance();
			res.Ohm = R1.Ohm + R2.Ohm;
            return res;
		}	
		public double Reactance(Frequency f)
		{
			return Ohm;
		}
        public override string ToString()
        {
            return base.ToString() + "(Ohm)";
        }
	}
}