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Understanding mains supply and potential difference
Electricity and circuits • Domestic electricity and safety
Key concepts
What you'll likely be quizzed about
- Potential difference refers to the difference in electrical energy per unit charge between two points in a circuit.
- Measured in volts, it quantifies the energy needed to move a charge from one point to another, answering how much work is done to push charge through a circuit.
Flashcards
Test your knowledge with interactive flashcards
Key notes
Important points to keep in mind