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P1: GCSE Science - EDEXCEL
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The Energy-Saver light bulb is 5 times more efficient than an ordinary filament bulb.

 

 

      

 P1 Efficiency   

Syllabus Summary Questions Answers

       

     Specification reference

  • P1a: 10.7

    Learning outcome

  • To calculate efficiency.

    Keywords

  • Efficiency - useful energy.