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Homework Help: Energy stored in a battery

  1. Apr 22, 2013 #1
    1. The problem statement, all variables and given/known data

    A battery with constant voltage of 4V and 2 A-h, find the energy (in jouls) stored in the battery when it is fully charged.

    2. Relevant equations

    A-h=3600 C
    1 Joule= V*C.

    3. The attempt at a solution We have 2A-h=7200 C, and Joules are volt-couloumb, so we multiply to get that the the energy is : 4*2*3600=28800 J.

    Am I correct ?
     
  2. jcsd
  3. Apr 22, 2013 #2

    phyzguy

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