The unit of home electricity energy consumption is ?
- A. Watt hour
- B. Joule hour
- C. Killowatt hour
- D. Kilo joule hour
Explanation
Domestic electricity consumption is measured in kilowatt-hours, the energy used by a 1-kilowatt appliance operating for one hour. A watt-hour is also an energy unit but is much smaller and is not the usual household billing unit.