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Class 9

Chapter 11 Class 9 - Work and Energy (Term 2)

Last updated at June 8, 2019 by Teachoo

NCERT Question 14 An electric heater is rated 1500 W. How much energy does it use in 10 hours? Given Power = 1500 W Time taken = 10 hours We know that Power = (πΈπππππ¦ ππππ π’πππ)/(ππππ π‘ππππ) Energy consumed = Power Γ Time taken = 1500 Γ 10 = 15000 Wh = 15000/1000 kWh = 15 kWh Energy consumed is 15 kWh