Correct option is C
· A good heating element should have a low temperature coefficient of resistance.
· This means that its resistance should not change significantly with temperature.
· This property ensures that the heating element provides consistent performance and efficient heat generation over a wide range of operating temperatures.
High temperature coefficient of resistance: Not desirable as it would cause the resistance to change significantly with temperature, leading to instability and inefficiency.
Low oxidizing temperature: Not desirable as it would mean the material oxidizes easily at lower temperatures, reducing the lifespan of the heating element.
Low melting temperature: Not desirable as it would mean the element melts easily under high temperatures, which is not suitable for a heating element.
