How long is the wire, A tungsten wire has a radius of 0.070

How long is the wire

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Reference no: EM13716118

Question: A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1405 ^oC. The temperature coefficient of resistivity is Î± = 4.5 x 10^-3 (C^o)-1. When 150 V is applied across the ends of the hot wire, a current of 1.8 A is produced.

Question 1: How long is the wire?

I need help to find how long is the wire and neglect any effects due to thermal expansion of the wire.

Reference no: EM13716118

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How long is the wire : A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1405 oC. The temperature coefficient of resistivity is Î± = 4.5 x 10-3 (Co)-1. How long is the wire

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