P1.3 Electrical energy
- Created by: frankie306
- Created on: 24-05-15 18:13
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- P1.3 Electrical energy
- Electrical appliances
- Transfer electrical energy into useful energy
- Power
- rate of transfer of energy
- 1 watt= 1 joule per second
- 1 kilowatt = 1000 watts
- P = E / t
- rate of transfer of energy
- Using electrical energy
- 1 kilowatt hour
- = energy supplied to a 1 kW appliance in 1 hour
- total cos = number of kWh used x cost per kWh
- 1 kilowatt hour
- Cost effectiveness
- Getting the best value for money
- compare cost to buy, running cost and other
- Electrical appliances
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