A-LevelPhysicsElectricity9702/12 · Oct/Nov 2014 · Q311 Mark
A battery is marked 9.0 V. What does this mean?
AEach coulomb of charge from the battery supplies 9.0 J of electrical energy to the whole circuit.
BThe battery supplies 9.0 J to an external circuit for each coulomb of charge.
CThe potential difference across any component connected to the battery will be 9.0 V.
DThere will always be 9.0 V across the battery terminals.
✓ Correct answer
A: Each coulomb of charge from the battery supplies 9.0 J of electrical energy to the whole circuit.
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