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A 2 m long wire of resistance 4 Omega an...

A 2 m long wire of resistance `4 Omega` and diameter 0.64 mm is coated with plastic insulation of thickness 0.66 mm. A current of 5A flows through the wire. Find the temperature difference across the insulation in the steady state. Thermal conductivity of plastic is `0.16 xx (10^-2) cal//s cm.^@C`.

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The correct Answer is:
`[2.05^(@)C]`
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PHYSICS GALAXY - ASHISH ARORA-HEAT TRANSFER -Unsolved Numerical Problems for Preparation of NSEP,INPhO&IPhO
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