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    • Question

      Which physical quantity has unit

      “Joule/second”?  
      A Power Correct Answer Incorrect Answer
      B Energy Correct Answer Incorrect Answer
      C Work Correct Answer Incorrect Answer
      D Pressure Correct Answer Incorrect Answer

      Solution

      Power = Work / Time   Unit of work is Joule, time is second, so Power = Joule/second = Watt   1 Watt = 1 Joule per second   This defines how fast work is done (e.g., in motors, bulbs).

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