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What is the maximum instantaneous power that the resistance must withs

  1. Feb 16, 2013 #1
    1. A hair dryer has a power rating of 1700 W at 110 V rms. Assume the hair dryer circuit contains only resistance.



    2. The peak voltage is sqrt2 * rms voltage.



    3. I got my esistance of the heating element is 7.12ohm and the rms current drawn by the hair dryer is 15.45A. But I am not sure how to get the maximum instantaneous power.
     
  2. jcsd
  3. Feb 16, 2013 #2

    tiny-tim

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    hi lizaliiu! :smile:

    hint: instantaneous power = V2/R :wink:
     
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