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Homework Help: Resistance and Ohm's Law

  1. Feb 5, 2008 #1
    1.What is the emf of a battery with a 0.15-ohm internal resistance if the battery delivers 1.5 A to an externally connected 5.0-ohm resistor?








    Given that r = 0.15 ohm , I = 1.5 ohm , R = 5 ohm.

    By Ohm’s law V = I ( R + r)
    = 1.5 (5.15)
    E=7.725 V


    Is my work/answer correct?
     
  2. jcsd
  3. Feb 5, 2008 #2

    Tom Mattson

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    Looks good to me.
     
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