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Rebooter
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Homework Statement
Determine the current in the wolfram filament with the diameter 0.8 mm and the temperature T=2800K, which is maintained constant. Specific electrical resistance of the filament is ρ = 0.92⋅10-4Ohm⋅cm. The temperature of environment is t = 17C.
Homework Equations
Possibly:
Power = R * Area
or Power = sigma*T^4*Area
The Attempt at a Solution
Completely lost, since no problem exists like this in our book or otherwise.
It's also possible that eVo=hf-[tex]\Phi[/tex] is used