wattmeter :

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  • n  an instrument for measuring in watts the flow of power in an electrical circuit

  • In the power station, besides the standard wattmeter which constantly records the total current in use and charts the daily peak loads, is a Hopkins wattmeter on which the .
  • The bicycle operated a dynamo which was connected with a number of electric lamps and a wattmeter which measured the amount of energy each subject was capable of expending.

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