Again one joule of electrical energy equals to one watt – second. Hence we use a bigger unit called kilowatt hour (kWh) to express energy.The kilowatt hour, or kilowatt-hour, (symbol kW•h, kW h or kWh) is a unit of energy equal to 1000 watt hours or 3.6 megajoules. The SI unit joule is too small to express very large quantities of energy. Kilowatt - hour is the commercial unit of electrical energy. List 10 modern-day animals and using the internet resources link it... Find out through internet and popular science articles whether... What does the term LOS communication mean?

is measured in kilowatt hour. Commercial unit of energy is kWh. Watt Hours.

In other words, if energy is used at the rate of 1 watt, the total energy used in 1 second is 1 joule. Hence the energy expended in an electrical circuit is said to be one joule (or watt second) if one-ampere current flows through the circuit for one second when the potential difference of one volt is applied across it. How many protons are present in a single deuterium nucleus? Basically, we find the unit of electrical energy is joule. One kilowatt-hour is defined as the amount of energy that is consumed by a device in one working hour at a constant rate of one kilowatt. The unit of electric power is watt, and hence unit of electrical energy is watt – second since energy is the product of power and time. One kilowatt hour of electric energy is called one 'unit'. Explain what affect does electricity have on soil?