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Homework Help: Rate at which energy is dissipated

  1. Nov 19, 2007 #1
    Light bulbs labeled 40W, 60W, and 100W are connected to a 120V/60Hz power line as shown in the figure. What is the rate at which energy is dissipated in each bulb?

    http://img156.imageshack.us/img156/9584/p41qz1.png [Broken]

    Well ac circuits has been confusing me. I first though if a light bulb was rated for 40W it would dissipated 40J/s but this isn't the case here. I tried to solve for the current going to each but i got stuck.
     
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Nov 19, 2007 #2
    :frown:Please help me out. Thank you.
     
  4. Nov 20, 2007 #3
    What do you know about parallel and series resistances? Can you state those formulas and show an attempt to solve them?
     
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