Potential difference and current
What Potential difference and current means in Combined Science GCSE, as defined for AQA.
Definitions of Potential difference and current
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Reference: AQA
Power depends on both the potential difference across a device and the current through it, as summarised by P = VI.
Power equals potential difference multiplied by current, so Vₚ × Iₚ = Vₛ × Iₛ for a 100% efficient transformer.
Topics that use Potential difference and current
- Energy transfers in everyday appliances (AQA GCSE)
- The National Grid (AQA GCSE)
Related terms
Using Potential difference and current in the exam
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