#power_unit__powerunit  a measure of electric power
  supertype:  #electromagnetic_unit__electromagneticunit__emu  any of various systems of units for measuring electricity and magnetism
  subtype:  #abwatt  a power unit equal to the power dissipated when 1 abampere flows across a potential difference of 1 abvolt (one ten-thousandth of a milliwatt)
  subtype:  #milliwatt  a unit of power equal to one thousandth of a watt
  subtype:  #watt__W  a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
  subtype:  #kilowatt__kW__kw  a unit of power equal to 1000 watts
  subtype:  #megawatt  a unit of power equal to one million watts
  subtype:  #horsepower__HP__H.P.__h.p.__hp  a unit of power equal to 746 watts
  subtype:  #volt-ampere__var  a unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere
  subtype:  #kilovolt-ampere  a unit of electrical power equal to 1000 volt-amperes

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