Why Eureka metal is used to make standard resistance coil?
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Eureka metal (alloy) is used to make standard resistance coil, because -
- Eureka is basically an alloy of copper and nickel.
- The electrical resistivity of this alloy is as high as 4.9/10⁷ ohm.m and the melting point of this alloy is as high as 1300°C.
- So, this alloy can easily produce high amount of electrical resistivity and has higher capacity of withstanding heat energy. These properties make this alloy an efficient resistant substance.
- That's why, it's used in standard resistance coil.
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