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Chapter 28: Q. 12 (page 790)

1kWhis how many joules?

Short Answer

Expert verified

1kWh=3.6脳106J

Step by step solution

01

Given information

We need to find that how many joules.

02

Simplify

The (kWh)is a unit of energy, so we have to convert it into Joule. The power is the rate where the energy is consumed or transferred, so it is energy per time. The unit of power is Joule per second or Watt (W)where 1W=1J/s.

1kW=1000W=1000(1J/s)=1000J/s

1hour represents 60minutes and each minute represents 60seconds. So, one hour has

1h=(60min)60smin=3600s

Now, converting1kWhto Joule by

1kWh=1000Js(3600s)=3.6脳106J

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