2. ELECTRICITY Physics

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4. Electrical Power Electrical Power Power = Energy change / time unit of power: Watt (W) unit of energy: Joule (J) unit of time: second (s) 1W = 1Js -1

5. Unit of Electricity Unit of Electricity - The energy consumed in household appliances is measured in kilowatt-hours (kWh) is measured in kilowatt-hours (kWh) - One kilowatt-hour is the amount of energy that is used by a 1000 W appliance in one hour. that is used by a 1000 W appliance in one hour.

6. The total cost of electricity consumption in June 0.12 0.28 0.4 12 0.084 0.196 0.28 8.4 12.8 384 8.96 268.8

7. Electricity Bill Chan Tai Man 13 Nathan Road Kowloon 85467-253-07 Chan Tai Man 13 Nathan Road Kowloon 28-04-98 共日用電量 由 至 59 01-03-9828-04-98 06-05-98

8. Kilowatt-hour meter Kilowatt-hour meter When the mains cable enters the home, it is connected through a fuse to a kilowatt-hour meter.

9. http://www.hec.com.hk Hong Kong Electric Holdings Ltd. China Light & Power Co. Ltd. http://www.clphk.com.hk Two Electrical Suppliers in Hong Kong: