ICSE Class 10 Physics 2020 Solved Paper

Question : 3

Total: 67

Define a kilowatt hour. How is it related to joule?

Solution:

A kilowatt hour (1‌kWh) is the energy spent (or work done) by a source of power 1‌kW in 1 hour.
1‌kWh‌=1‌kW×1‌hour
‌=1000Js−1×3600 s
‌=3.6×106J

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