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Carbon filament

  1. Apr 30, 2005 #1
    carbon filament in a light bulb does obey the ohm's law right?
  2. jcsd
  3. Apr 30, 2005 #2


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    To the best of my knowledge, light bulb filaments are tungsten. Yes, they adhere to Ohms law, as long as you understand that the Resistance may change with temperature. If you are looking at small changes in current, then the resistance will be constant.
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