What is a rheostat wire?which material is used as rheostat wire and why?
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A rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption. ... Therefore they are mostly constructed as wirewound resistors. Resistive wire is wound around an insulating ceramic core and the wiper slides over the windings.
Constantan. Constant is a copper nickel alloy. Like manganin, it also having very low temperature coefficient of resistance (slightly higher than manganin). Therefore, its resistivity is also remains constant over wide range of temperature.
I hope it will help you dear friend...
Constantan. Constant is a copper nickel alloy. Like manganin, it also having very low temperature coefficient of resistance (slightly higher than manganin). Therefore, its resistivity is also remains constant over wide range of temperature.
I hope it will help you dear friend...
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