Post a New Question


posted by on .

Calculate the electric power which must be supplied to the filament of of a light bulb operating at 3000K. The total surface area of the filament is
and its emissivity is 0.92.

  • phy - ,

    R=kσT⁴ = 0.92•5.67•10⁻⁸•3000⁴=… W/m²
    R=P/A =>
    P=AR= A•kσT⁴ =
    =8•10⁻⁶•0.92•5.67•10⁻⁸•3000⁴= 33.8 W

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question