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Homework Help: Currents !

  1. May 3, 2010 #1

    1. The problem statement, all variables and given/known data
    Why can't the potential difference in household currents be changed?

    2. Relevant equations

    3. The attempt at a solution
    Is it just because the fuse will ignite if overheated?
  2. jcsd
  3. May 3, 2010 #2
    Re: Currents!!!!!!

    Voltages are changed on household appliances all the time through transformers. For example my laptop runs at 19.5V and the outlet outputs at 120V.
  4. May 4, 2010 #3
    Re: Currents!!!!!!

    Oh ok thanks

    Currents FTW
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