AQA GCSE Physics · 8463
Specification 4.1.1.4, 4.2.4.1 · Paper 1
- Revise: Power
The unit of power. One watt is equal to one joule transferred per second: .
- Revise: Power
The unit of power; .
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GCSE Physics · key term
The unit of power. One watt is equal to one joule of energy transferred per second.
Used by AQA, Edexcel and OCR
Specification 4.1.1.4, 4.2.4.1 · Paper 1
The unit of power. One watt is equal to one joule transferred per second: .
The unit of power; .
Specification 8.12, 8.14, 10.28, 10.29, 10.30, 10.31 · Paper 2
The SI unit of power. One watt means that one joule of energy is transferred each second.
Revise: Power DefinitionPower is measured in watts (W).
The unit of power. One watt is a transfer of one joule of energy each second.
The unit of power. One watt is equal to one joule transferred per second.
The unit of power; one watt is an energy-transfer rate of one joule per second.
The unit of power; .
Specification P2.2o · Paper 1 (Foundation), Paper 3 (Higher)
The SI unit of power; one watt is one joule per second.
Revise: Power definitionBecause a watt is a joule per second, multiplying watts by seconds gives joules.
Check the unit: dividing joules by seconds gives joules per second, which is watts.
Give power in watts (W). Check that potential difference is in volts, current in amperes and resistance in ohms before substituting.
Write the unit symbol for watt as a capital ; write joule per second as .
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