A heating element has a resistance of 10...

A heating element has a resistance of 100 `Omega` at room temperature. When it is connected to a supply of 220 V, a steady current of 2A passes in it and temperature is `500^(@)C` more than room temperature. What is the temperature coefficient of resistance of the heating element ?

`5xx10^(-4).^(@)C^(-1)`

`2xx10^(-4).^(@)C^(-1)`

`1xx10^(-4).^(@)C^(-1)`

`0.5xx10^(-4).^(@)C^(-1)`

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