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GCSE Combined Science · key term
A meter that measures electric current and is connected in series with the components being tested.
Used by AQA and Edexcel
Specification 6.2.1.1 · Paper 5, Paper 6
Revise: Circuit Diagram SymbolsAn ammeter is a circle containing A and measures current. A voltmeter is a circle containing V and measures potential difference.
Paper 5, Paper 6
A meter connected in series with a component to measure the current through it.
Put an ammeter in series and a voltmeter in parallel across the component being measured.
To measure a component’s current, put the ammeter in the same path as that component, not in a separate parallel branch.
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If an ammeter reads 0.5 A before the first lamp, the current between the lamps and after the second lamp is also 0.5 A. The lamps transfer energy; they do not use up current.