Cost of electrical energy

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Description and Tags

Physical Science

IEB

9th

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6 Terms

1
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Energy is measured in:

Joules (J)

2
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Time is measured in:

Seconds (s)

3
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Power is measured in:

Watts (W)

4
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Energy formula:

Energy= power x time

5
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Cost formula:

Cost= power x time x unit price

6
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Price for particular appliance:

Cost= power rating of appliance x number of hours it was used for x unit price of electricity.