Find the lenght of the wire

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Reference no: EM13239414

A tungsten wire has a radius of 0.086 mm and is heated from 20.0 to 1422 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3(Co)-1. When 130 V is applied across the ends of the hot wire, a current of 1.2 A is produced. How long is the wire? Neglect any effects due to thermal expansion of the wire.

Reference no: EM13239414

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