#induction.natural_process  the process whereby changes in the current flow in a circuit produce magnetism or an EMF
  supertype:  natural_process__naturalproces__natural_action__naturalaction__action__activity  a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
  subtype:  mutual_induction.induction__mutualinduction  induction in a second circuit caused by changes in a first circuit
  subtype:  self-induction.induction__selfinduction  induction in a circuit caused by changes in the circuit itself

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