Question

1 kilowatt hour equals to how much Joule

Answer 1

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 1kW is 1000W, and an hour is 60 seconds x 60 minutes.

So 1kWh = 3600kWs = 3,600,000Ws = 3,600,000J