P4.2.5 Electrical energy and electrical power

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Last updated 11:17 PM on 8/1/26
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7 Terms

1
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What is power?

  • Power: a measure of how quickly energy is transferred

    • Measured in Watts (W)

2
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What is electrical power?

  • The rate at which a component or circuit transfers electrical energy

3
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Formula for electrical power

  • This formula is specific to electricity

<ul><li><p>This formula is specific to <strong>electricity</strong></p></li></ul><p></p>
4
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Formula for power

  • This is the general formula for power

  • The one used depends on what variables they give you

<ul><li><p>This is the general formula for power</p></li><li><p>The one used depends on what variables they give you</p></li></ul><p></p>
5
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Formula for electrical energy

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What is the kWh (the kilowatt-hour) and how to convert?

  • A unit of electrical energy

    • From W to kW→ divide by 1000

    • From kW to W→ multiply by 1000

7
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Formula for cost of electrical appliances

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