Circuits

Discussion in 'Homework Help' started by f74bat, Nov 26, 2008.

  1. f74bat

    Thread Starter Member

    Nov 26, 2008
    13
    0
    I need help with this question on my assignment.

    The tungsten filament of a light bulb has a resistance of 0.0668 ohm. If the filament is 26.0 cm long, what is its diameter?
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
  3. f74bat

    Thread Starter Member

    Nov 26, 2008
    13
    0
    I can only gte so far with the help of this website. I got the resistivity and found the area.
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    A=(pi*d^2)/4

    where

    A= area

    d=diameter
     
  5. f74bat

    Thread Starter Member

    Nov 26, 2008
    13
    0
    Thank you. Your a life saver!
     
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