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Energy siored in an inductor

  1. Apr 21, 2010 #1
    i know how can energy be stored in an object in a gravitational or electric field simply by working on the charge or mass agianst the respective field but how can energy be stored in a megnatic field i mean how would that be explained hypothatically ???
  2. jcsd
  3. Apr 21, 2010 #2


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    The fields that you mentioned are a form of stored energy, that is, it takes energy to create a gravitational or electric field in the first place. The same is true for a magnetic field. The energy stored in a magnetic field is


    To drive home the point that the stored energy is the same as the work expended in creating the field, you'll often see this quantity called W (work) instead of U (energy).
  4. Apr 24, 2010 #3
    so basically the work done to establish the megnatic field is stored in the inductor right but how is that energy utilized ??
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