A 500-W heating coil designed to operate from 110 V is made of Nichrone wire 0.0500 mm in diameter a) assuming the resistivity of the Nichrone remains constant at its 20.0 degrees celcius , find the length of wire used. b) What if? Now consider the variation of resistivity with temperature . what power is delivered to the coil of part a) when is is warmed to 1200 degrees celcius?
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