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Electrical Energy

QuestionAnswer
What defines the power of an appliance? The rate at which it transfers energy
What is the relationship between time, power and energy? Power=Energy/Time
What is the unit of power? Watt (W)
What is the unit of energy? Joule (J)
What is the relationship between Watts and Joules? 1 Watt = 1J/s
What is a kWh? A unit of energy when a kW appliance has been left running for an hour?
Why has the production and sale of filament bulbs been banned? They are very inefficient and therefore waste a lot of energy.
What is payback time? The time taken for the savings of an appliance to pay back the original investment.
Created by: asdfghjkl;'#
 

 



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