Answered: and the fusing temperature is 1200 K.…

and the fusing temperature is 1200 K. Assuming a surface emissivity of 0.3, how much current is required to melt the conductor?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

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Question

A cylindrical conductor has radius r =
and the fusing temperature is 1200 K. Assuming a surface emissivity of 0.3, how much current is
required to melt the conductor?
2 mm. The resistivity of the conductor is 4 · 10¬8 Nm

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