A metal ball of mass \(2\) kg is heated by a \(30~\text{W}\) heater, in a room at \(20^{\circ}\text{C}\). The temperature of the metal becomes steady at \(50^{\circ}\text{C}\). The rate of loss of heat from the ball when the temperature is \(50^{\circ}\text{C}\) is:
1. \(0~\text{W}\)
2. \(50~\text{W}\)
3. \(25~\text{W}\)
4. \(30~\text{W}\)