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Energy lost due to resistance?

  1. Jul 9, 2015 #1
    If electricity passes through a system at 12 volts, with 0.42 Amps of current, and 28.8 ohms of resistance, how do you calculate the energy lost in joules?
  2. jcsd
  3. Jul 9, 2015 #2


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    Staff: Mentor

    Power multiplied by time...
  4. Jul 9, 2015 #3


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    Science Advisor
    Gold Member

    [itex]P=I^2R[/itex] is energy loss per unit time.
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