Usefulness of electrical appliances

Question 1

Describe energy transfers in everyday electrical appliances.

Answer 1

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Question 2

Link the amount of energy transferred to the power and the amount of time switched on.

Answer 2

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Question 3

Calculate the energy transferred when you know the time and power.

Answer 3

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Question 4

Calculate the cost of electricity given the cost per kilowatt-hour.

Answer 4

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