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Which one of the following is the value of 1 kWh of energy converted into joules?

Options

  1. A1.8 10^6 ~J
  2. B3.6 10^6 ~J
  3. C6.0 10^6 ~J
  4. D7.2 10^6 ~J

Correct answer

B. 3.6 10^6 ~J

Step-by-step solution

kWh (kilowatt-hour) and Joules are two energy units. 1 watt is defined as 1 joule/second. So if you multiply a watt times seconds, you get Ws which is also a joule. So 1 kW is 1000 W , and an hour is 60 seconds x 60 minutes. So 1 kWh =3600 kWs =3,600,000 Ws =3,600,000 ~J So 1 kWh =3.6 10^6 ~J

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