What does the power rating of an appliance tell you?
The power rating of an appliance tells you how much energy it uses per second.
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How do you calculate the total energy an appliance transfers?
Use the equation: Energy (kWh) = power (W) x time (h)
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What is the impact of a higher power rating on energy usage?
The higher the power rating, the more energy used over a time period.
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How does the power rating affect the cost of running an appliance?
Higher power ratings cost more to run as more energy is transferred.
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What unit is the energy content in food measured in?
Food contains energy measured in kilojoules (kJ).
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