A-LevelPhysicsElectricity9702/12 · Feb/Mar 2024 · Q371 Mark
The charge carriers in a metal wire are free electrons. Which statement about the charge of each free electron is correct?
AThe magnitude of the charge increases with the potential difference across the wire.
BThe magnitude of the charge is zero unless there is a potential difference across the wire.
CThe sign and magnitude of the charge do not depend on the potential difference across the wire.
DThe sign of the charge depends on the potential difference across the wire.
✓ Correct answer
C: The sign and magnitude of the charge do not depend on the potential difference across the wire.
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