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  1. Class 9
  2. Chapter 11 Class 9 - Work and Energy

Transcript

Question 3 Page 156 A lamp consumes 1000 J of electrical energy in 10 s. What is its power? Energy consumed = 1000 J Time taken = 10 s Power = (πΈπ‘›π‘’π‘Ÿπ‘”π‘¦ π‘π‘œπ‘›π‘ π‘’π‘šπ‘’π‘‘)/(π‘‡π‘–π‘šπ‘’ π‘‘π‘Žπ‘˜π‘’π‘›) = 1000/10 = 100 J/s = 100 W Power of lamp is 100 W

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.