Modern Physics: Current in Wolfram Filament

[Rebooter]

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 eV_o=hf-\Phi is used

 

[gneill]

I think you'll want to investigate the Stefan-Bolzmann law for radiative power. Also keep in mind that whatever emits can also absorb...