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  3. a long wire of diameter d = 2mm is submerged in an

A long wire of diameter D = 2mm is submerged in an oil bath at 25...

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Mechanical Engineering

A long wire of diameter D = 2mm is submerged in an oilbath at 25 degrees C. The wire has an electrical resistance perunit length of R’ = 0.015 Ω/m. If a current of I = 75A flowsthrough the wire and the convection coefficient is h = 400 W/m2*K,what is the steady-state temperature of the wire? From the time thecurrent is applied, how long does it take for the wire to reach atemperature that is within 1-degree C of steady-state? The wireproperties are p = 7800 kg/m3, c = 500 J/kg*K, and k = 25W/m*K.

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