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Power (electric current)

  1. Apr 2, 2013 #1
    1. The problem statement, all variables and given/known data
    The power rating of an electric appliance is 1500 W. How much current does this appliance draw when it is used in a home electric circuit ( V= 120)?


    2. Relevant equations

    P= VI


    3. The attempt at a solution

    P= VI => I= P/V => I= 1500W/120V = 12.5A

    Is this correct? This seems way too simple ha ha ha.....so im not sure.
     
  2. jcsd
  3. Apr 2, 2013 #2

    PeterO

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    If this is an early assignment on the topic, you could expect it to be simple. If this is a final assessment assignment you could be forgiven for wondering.
     
  4. Apr 2, 2013 #3

    CWatters

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    It probably is that simple but ...

    The power rating is the maximum power that the device can draw. For example the 500W rated power supply in my PC draws a lot less in practice.
     
  5. Apr 2, 2013 #4
    Thanks for your input CWatters, this is one of the question from my assignment so i can only work with what i have.
     
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